Messy demo code which shows that I can make any windows app dark mode

using magnification api.

.gitignore

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+# JetBrains Rider
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Form1.Designer.cs

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+namespace WindowOverlayApp
+{
+    partial class Form1
+    {
+        /// <summary>
+        ///  Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        ///  Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        ///  Required method for Designer support - do not modify
+        ///  the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            SuspendLayout();
+            // 
+            // Form1
+            // 
+            AutoScaleDimensions = new SizeF(8F, 20F);
+            AutoScaleMode = AutoScaleMode.Font;
+            BackColor = Color.Lime;
+            ClientSize = new Size(800, 450);
+            FormBorderStyle = FormBorderStyle.None;
+            Name = "Form1";
+            ShowInTaskbar = false;
+            Text = "Form1";
+            TransparencyKey = Color.Lime;
+            ResumeLayout(false);
+        }
+
+        #endregion
+    }
+}

Form1.cs

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+using System.Runtime.InteropServices;
+using Karna.Magnification;
+using System.Windows.Forms;
+using System.Text;
+using System.Diagnostics;
+
+namespace WindowOverlayApp
+{
+    public partial class Form1 : Form
+    {
+        const int SWP_NOACTIVATE = 0x0010;
+        const int SWP_SHOWWINDOW = 0x0040;
+        const int SWP_NOMOVE = 0x0002;
+        const int SWP_NOSIZE = 0x0001;
+
+        // Window event constants
+        const uint EVENT_OBJECT_LOCATIONCHANGE = 0x800B;
+        const uint EVENT_SYSTEM_FOREGROUND = 0x0003; // Triggers when a window comes to the foreground
+        const uint WINEVENT_OUTOFCONTEXT = 0x0000;
+
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern IntPtr GetParent(IntPtr hWnd);
+
+        [DllImport("user32.dll")]
+        static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern bool GetClientRect(IntPtr hWnd, ref RECT lpRect);
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern IntPtr SetWinEventHook(uint eventMin, uint eventMax, IntPtr hmodWinEventProc, WinEventDelegate lpfnWinEventProc,
+                                             uint idProcess, uint idThread, uint dwFlags);
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern bool UnhookWinEvent(IntPtr hWinEventHook);
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern IntPtr GetWindow(IntPtr hWnd, uint uCmd);
+
+        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
+        public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);
+
+        [DllImport("user32.dll")]
+        static extern IntPtr GetForegroundWindow();
+
+        const int GW_HWNDFIRST = 0;
+        const int GW_HWNDLAST = 1;
+        const int GW_HWNDNEXT = 2;
+        const int GW_HWNDPREV = 3;
+        const int GW_OWNER = 4;
+        const int GW_CHILD = 5;
+        const int GW_ENABLEDPOPUP = 6;
+
+        // Delegate for WinEvent hook
+        delegate void WinEventDelegate(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime);
+
+        private IntPtr notepadHandle = IntPtr.Zero;
+        private IntPtr winEventHook = IntPtr.Zero;
+        private IntPtr foregroundEventHook = IntPtr.Zero;
+        private WinEventDelegate winEventDelegate, foregroundEventDelegate;
+
+        [StructLayout(LayoutKind.Sequential)]
+        public struct RECT
+        {
+            public int Left;
+            public int Top;
+            public int Right;
+            public int Bottom;
+        }
+
+        Magnifier magnifier;
+        private System.Windows.Forms.Timer resizeTimer;
+        private bool isResizing = false;
+
+        public Form1()
+        {
+            InitializeComponent();
+
+            winEventDelegate = new WinEventDelegate(WinEventProc);
+            foregroundEventDelegate = new WinEventDelegate(ForegroundEventProc);
+
+            magnifier = new Magnifier(this);
+        }
+
+        const int WS_EX_TOOLWINDOW = 0x00000080;  // Hides from Alt+Tab
+        const int WS_EX_APPWINDOW = 0x00040000;   // Forces a window to appear in Alt+Tab
+        const int WS_EX_NOACTIVATE = 0x08000000;  // Prevents the window from receiving focus
+        protected override CreateParams CreateParams
+        {
+            get
+            {
+                const int WS_EX_LAYERED = 0x80000;
+                const int WS_EX_TRANSPARENT = 0x20;
+                CreateParams cp = base.CreateParams;
+                // Hide the window from Alt+Tab and taskbar by using WS_EX_TOOLWINDOW
+                cp.ExStyle |= WS_EX_TOOLWINDOW;
+                cp.ExStyle |= WS_EX_LAYERED;
+                cp.ExStyle |= WS_EX_TRANSPARENT;
+                return cp;
+            }
+        }
+
+        protected override void OnLoad(EventArgs e)
+        {
+            base.OnLoad(e);
+
+            // Find the Notepad window by its title (change this if your Notepad title is different)
+            notepadHandle = FindWindow(null, "Vivado 2024.1");
+
+            if (notepadHandle != IntPtr.Zero)
+            {
+                // Hook into the window events to track movements, resizes, and other changes
+                winEventHook = SetWinEventHook(EVENT_OBJECT_LOCATIONCHANGE, EVENT_OBJECT_LOCATIONCHANGE, IntPtr.Zero, winEventDelegate, 0, 0, WINEVENT_OUTOFCONTEXT);
+                foregroundEventHook = SetWinEventHook(EVENT_SYSTEM_FOREGROUND, EVENT_SYSTEM_FOREGROUND, IntPtr.Zero, foregroundEventDelegate, 0, 0, WINEVENT_OUTOFCONTEXT);
+                UpdateOverlayWindow(); // Update position and size at load
+            }
+            else
+            {
+                MessageBox.Show("Notepad window not found.");
+            }
+        }
+
+        protected override void OnFormClosed(FormClosedEventArgs e)
+        {
+            base.OnFormClosed(e);
+            // Unhook the event when closing the form
+            if (winEventHook != IntPtr.Zero)
+            {
+                UnhookWinEvent(winEventHook);
+            }
+        }
+
+        private RECT lastRect; // To store the last known rectangle
+
+        private void UpdateOverlayWindow()
+        {
+            SetWindowPos(this.Handle, -1, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOSIZE);
+            
+            if (notepadHandle == IntPtr.Zero)
+                return;
+
+            // Get the position and size of the Notepad window
+            RECT rect = new RECT();
+            if (GetWindowRect(notepadHandle, ref rect))
+            {
+                // Adjust for window borders in Aero
+                const int windowBorder = 2;
+                const int aeroBorder = 7 + windowBorder;
+                const int aeroBorderTop = -1 + windowBorder;
+
+                rect.Left += aeroBorder;
+                rect.Top += aeroBorderTop;
+                rect.Right -= aeroBorder;
+                rect.Bottom -= aeroBorder;
+
+                // Set this form's size and position to match Notepad's
+                this.Size = new Size(rect.Right - rect.Left, rect.Bottom - rect.Top);
+                this.Location = new Point(rect.Left, rect.Top);
+
+                // Overlay this window on top of Notepad's window
+
+                //magnifier.ResizeMagnifier();
+                //SetWindowPos(this.Handle, GetWindow(notepadHandle, GW_OWNER), 0, 0, 0, 0, SWP_NOACTIVATE | SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOSIZE);
+                SetWindowPos(this.Handle, -1, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOSIZE);
+                magnifier.UpdateMaginifier();
+            }
+        }
+
+
+        // This method is called whenever the Notepad window changes position or size
+        private void WinEventProc(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
+        {
+            if (hwnd == notepadHandle)
+            {
+                UpdateOverlayWindow(); // Adjust overlay window whenever the target window moves or resizes
+            }
+        }
+
+        private void ForegroundEventProc(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
+        {
+            if (hwnd == notepadHandle)
+            {
+                UpdateOverlayWindow();
+            } else if (!IsAnyParentMatching(hwnd,notepadHandle) && !IsWindowClass(hwnd, "ForegroundStaging") && !IsWindowClass(hwnd, "MultitaskingViewFrame"))
+            {
+                SetWindowPos(this.Handle, 1, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
+
+            }
+        }
+
+        static bool IsAnyParentMatching(IntPtr hwnd, IntPtr targetHwnd)
+        {
+            IntPtr currentHwnd = hwnd;
+
+            while (currentHwnd != IntPtr.Zero)
+            {
+                if (currentHwnd == targetHwnd)
+                    return true;
+
+                currentHwnd = GetParent(currentHwnd);
+            }
+
+            return false;
+        }
+
+
+        static bool IsWindowClass(IntPtr hWnd, string className)
+        {
+            StringBuilder wClassName = new StringBuilder(className.Length+20);
+            GetClassName(hWnd, wClassName, className.Length+20);
+            Debug.WriteLine(wClassName);
+            return wClassName.ToString() == className;
+        }
+
+        private void textBox1_TextChanged(object sender, EventArgs e)
+        {
+
+        }
+    }
+}

Form1.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
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+    <value>text/microsoft-resx</value>
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+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

LICENSE_Karna.Magnification

@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

Magnifier.cs

@@ -0,0 +1,202 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows.Forms;
+using System.Drawing;
+using System.Runtime.InteropServices;
+
+namespace Karna.Magnification
+{
+    public class Magnifier : IDisposable
+    {
+        private Form form;
+        private IntPtr hwndMag;
+        private float magnification;
+        private bool initialized;
+        private RECT magWindowRect = new RECT();
+        private System.Windows.Forms.Timer timer;
+        public nint afterHwnd;
+
+        public Magnifier(Form form)
+        {
+            if (form == null)
+                throw new ArgumentNullException("form");
+
+            magnification = 1.0f;
+            this.form = form;
+            this.form.Resize += new EventHandler(form_Resize);
+            this.form.FormClosing += new FormClosingEventHandler(form_FormClosing);
+
+            timer = new System.Windows.Forms.Timer();
+            timer.Tick += new EventHandler(timer_Tick);
+
+            initialized = NativeMethods.MagInitialize();
+            if (initialized)
+            {
+                SetupMagnifier();
+                timer.Interval = NativeMethods.USER_TIMER_MINIMUM;
+                timer.Enabled = true;
+            }
+        }
+
+        void form_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            timer.Enabled = false;
+        }
+
+        void timer_Tick(object sender, EventArgs e)
+        {
+            UpdateMaginifier();
+        }
+
+        void form_Resize(object sender, EventArgs e)
+        {
+            ResizeMagnifier();
+        }
+
+        ~Magnifier()
+        {
+            Dispose(false);
+        }
+
+        public virtual void ResizeMagnifier()
+        {
+            if ( initialized && (hwndMag != IntPtr.Zero))
+            {
+                NativeMethods.GetClientRect(form.Handle, ref magWindowRect);
+                // Resize the control to fill the window.
+                NativeMethods.SetWindowPos(hwndMag, IntPtr.Zero,
+                    magWindowRect.left, magWindowRect.top, magWindowRect.right, magWindowRect.bottom, 0);
+            }
+        }
+
+        public virtual void UpdateMaginifier()
+        {
+            if ((!initialized) || (hwndMag == IntPtr.Zero))
+                return;
+
+            RECT sourceRect = new RECT();
+
+            sourceRect.left = form.Left;
+            sourceRect.right = form.Right;
+            sourceRect.top = form.Top;
+            sourceRect.bottom = form.Bottom;
+
+            if (this.form == null || this.form.IsDisposed)
+            {
+                timer.Enabled = false;
+                return;
+            }
+
+            // Set the source rectangle for the magnifier control.
+            NativeMethods.MagSetWindowSource(hwndMag, sourceRect);
+            // Reclaim topmost status, to prevent unmagnified menus from remaining in view. 
+            //NativeMethods.SetWindowPos(hwndMag, form.Handle, 0, 0, 0, 0,
+            //    (int)SetWindowPosFlags.SWP_NOACTIVATE | (int)SetWindowPosFlags.SWP_NOMOVE | (int)SetWindowPosFlags.SWP_NOSIZE);
+
+            // Force redraw.
+            redraw();
+        }
+
+        public virtual void redraw()
+        {
+            NativeMethods.InvalidateRect(hwndMag, IntPtr.Zero, true);
+        }
+
+        public float Magnification
+        {
+            get { return magnification; }
+            set
+            {
+                if (magnification != value)
+                {
+                    magnification = value;
+                    // Set the magnification factor.
+                    Transformation matrix = new Transformation(magnification);
+                    NativeMethods.MagSetWindowTransform(hwndMag, ref matrix);
+                }
+            }
+        }
+
+        protected void SetupMagnifier()
+        {
+            if (!initialized)
+                return;
+
+            IntPtr hInst;
+
+            hInst = NativeMethods.GetModuleHandle(null);
+
+            // Make the window opaque.
+            form.AllowTransparency = true;
+            form.TransparencyKey = Color.Empty;
+            form.Opacity = 255;
+
+            // Create a magnifier control that fills the client area.
+            NativeMethods.GetClientRect(form.Handle, ref magWindowRect);
+            hwndMag = NativeMethods.CreateWindow(
+                (int)ExtendedWindowStyles.WS_EX_TRANSPARENT | (int)ExtendedWindowStyles.WS_EX_NOACTIVATE, 
+                NativeMethods.WC_MAGNIFIER,
+                "MagnifierWindow", 
+                (int)WindowStyles.WS_CHILD | (int)MagnifierStyle.MS_INVERTCOLORS |
+                (int)WindowStyles.WS_VISIBLE,
+                magWindowRect.left, magWindowRect.top, magWindowRect.right, magWindowRect.bottom,
+                form.Handle, IntPtr.Zero, hInst, IntPtr.Zero
+            );
+
+            if (hwndMag == IntPtr.Zero)
+            {
+                return;
+            }
+
+            // Set the magnification factor.
+            Transformation matrix = new Transformation(magnification);
+            NativeMethods.MagSetWindowTransform(hwndMag, ref matrix);
+        }
+
+        public bool SetFilter(nint hwnd)
+        {
+            bool res = true;
+            //IntPtr filterHandle = Marshal.AllocHGlobal(sizeof(int));
+
+            //try
+            //{
+            //    Marshal.WriteInt64(filterHandle, (nint)hwnd); // Store the integer value
+            //    res &= NativeMethods.MagSetWindowFilterList(hwndMag, (int)FilterMode.MW_FILTERMODE_INCLUDE, 1, filterHandle);
+            //    res &= NativeMethods.MagGetWindowFilterList(hwndMag, filterHandle, 0, filterHandle) == 1;
+            //}
+            //finally
+            //{
+            //    // Free the allocated unmanaged memory to prevent memory leaks
+            //    Marshal.FreeHGlobal(filterHandle);
+            //}
+            return res;
+        }
+
+        protected void RemoveMagnifier()
+        {
+            if (initialized)
+                NativeMethods.MagUninitialize();
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            timer.Enabled = false;
+            if (disposing)
+                timer.Dispose();
+            timer = null;
+            form.Resize -= form_Resize;
+            RemoveMagnifier();
+        }
+
+        #region IDisposable Members
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        #endregion
+    }
+}

NativeMethods.cs

@@ -0,0 +1,170 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.InteropServices;
+
+namespace Karna.Magnification
+{
+
+    internal static class NativeMethods
+    {
+
+        public static IntPtr HWND_TOPMOST = new IntPtr(-1);
+
+        public const int USER_TIMER_MINIMUM = 0x0000000A;
+        public const int SM_ARRANGE = 0x38;
+        public const int SM_CLEANBOOT = 0x43;
+        public const int SM_CMONITORS = 80;
+        public const int SM_CMOUSEBUTTONS = 0x2b;
+        public const int SM_CXBORDER = 5;
+        public const int SM_CXCURSOR = 13;
+        public const int SM_CXDOUBLECLK = 0x24;
+        public const int SM_CXDRAG = 0x44;
+        public const int SM_CXEDGE = 0x2d;
+        public const int SM_CXFIXEDFRAME = 7;
+        public const int SM_CXFOCUSBORDER = 0x53;
+        public const int SM_CXFRAME = 0x20;
+        public const int SM_CXHSCROLL = 0x15;
+        public const int SM_CXHTHUMB = 10;
+        public const int SM_CXICON = 11;
+        public const int SM_CXICONSPACING = 0x26;
+        public const int SM_CXMAXIMIZED = 0x3d;
+        public const int SM_CXMAXTRACK = 0x3b;
+        public const int SM_CXMENUCHECK = 0x47;
+        public const int SM_CXMENUSIZE = 0x36;
+        public const int SM_CXMIN = 0x1c;
+        public const int SM_CXMINIMIZED = 0x39;
+        public const int SM_CXMINSPACING = 0x2f;
+        public const int SM_CXMINTRACK = 0x22;
+        public const int SM_CXSCREEN = 0;
+        public const int SM_CXSIZE = 30;
+        public const int SM_CXSIZEFRAME = 0x20;
+        public const int SM_CXSMICON = 0x31;
+        public const int SM_CXSMSIZE = 0x34;
+        public const int SM_CXVIRTUALSCREEN = 0x4e;
+        public const int SM_CXVSCROLL = 2;
+        public const int SM_CYBORDER = 6;
+        public const int SM_CYCAPTION = 4;
+        public const int SM_CYCURSOR = 14;
+        public const int SM_CYDOUBLECLK = 0x25;
+        public const int SM_CYDRAG = 0x45;
+        public const int SM_CYEDGE = 0x2e;
+        public const int SM_CYFIXEDFRAME = 8;
+        public const int SM_CYFOCUSBORDER = 0x54;
+        public const int SM_CYFRAME = 0x21;
+        public const int SM_CYHSCROLL = 3;
+        public const int SM_CYICON = 12;
+        public const int SM_CYICONSPACING = 0x27;
+        public const int SM_CYKANJIWINDOW = 0x12;
+        public const int SM_CYMAXIMIZED = 0x3e;
+        public const int SM_CYMAXTRACK = 60;
+        public const int SM_CYMENU = 15;
+        public const int SM_CYMENUCHECK = 0x48;
+        public const int SM_CYMENUSIZE = 0x37;
+        public const int SM_CYMIN = 0x1d;
+        public const int SM_CYMINIMIZED = 0x3a;
+        public const int SM_CYMINSPACING = 0x30;
+        public const int SM_CYMINTRACK = 0x23;
+        public const int SM_CYSCREEN = 1;
+        public const int SM_CYSIZE = 0x1f;
+        public const int SM_CYSIZEFRAME = 0x21;
+        public const int SM_CYSMCAPTION = 0x33;
+        public const int SM_CYSMICON = 50;
+        public const int SM_CYSMSIZE = 0x35;
+        public const int SM_CYVIRTUALSCREEN = 0x4f;
+        public const int SM_CYVSCROLL = 20;
+        public const int SM_CYVTHUMB = 9;
+        public const int SM_DBCSENABLED = 0x2a;
+        public const int SM_DEBUG = 0x16;
+        public const int SM_MENUDROPALIGNMENT = 40;
+        public const int SM_MIDEASTENABLED = 0x4a;
+        public const int SM_MOUSEPRESENT = 0x13;
+        public const int SM_MOUSEWHEELPRESENT = 0x4b;
+        public const int SM_NETWORK = 0x3f;
+        public const int SM_PENWINDOWS = 0x29;
+        public const int SM_REMOTESESSION = 0x1000;
+        public const int SM_SAMEDISPLAYFORMAT = 0x51;
+        public const int SM_SECURE = 0x2c;
+        public const int SM_SHOWSOUNDS = 70;
+        public const int SM_SWAPBUTTON = 0x17;
+        public const int SM_XVIRTUALSCREEN = 0x4c;
+        public const int SM_YVIRTUALSCREEN = 0x4d;
+        
+        public const string WC_MAGNIFIER = "Magnifier";
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        public static extern int GetSystemMetrics(int nIndex);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        public static extern IntPtr SetTimer(IntPtr hWnd, int nIDEvent, int uElapse, IntPtr lpTimerFunc);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool KillTimer(IntPtr hwnd, int idEvent);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool GetClientRect(IntPtr hWnd, [In, Out] ref RECT rect);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, int flags);
+
+        [DllImport("user32.dll", EntryPoint = "CreateWindowExW", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall)]
+        public extern static IntPtr CreateWindow(int dwExStyle, string lpClassName, string lpWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, IntPtr hMenu, IntPtr hInstance, IntPtr lParam);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true, ExactSpelling = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool SetLayeredWindowAttributes(IntPtr hwnd, int crKey, byte bAlpha, LayeredWindowAttributeFlags dwFlags);
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
+        public static extern IntPtr GetModuleHandle([MarshalAs(UnmanagedType.LPWStr)] string modName);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool GetCursorPos(ref POINT pt);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool InvalidateRect(IntPtr hWnd, IntPtr rect, [MarshalAs(UnmanagedType.Bool)] bool erase);
+
+        [DllImport("Magnification.dll", CallingConvention=CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagInitialize();
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagUninitialize();
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagSetWindowSource(IntPtr hwnd, RECT rect);
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagGetWindowSource(IntPtr hwnd, ref RECT pRect);
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagSetWindowTransform(IntPtr hwnd, ref Transformation pTransform);
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagGetWindowTransform(IntPtr hwnd, ref Transformation pTransform);
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagSetWindowFilterList(IntPtr hwnd, int dwFilterMode, int count, IntPtr pHWND);
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        public static extern int MagGetWindowFilterList(IntPtr hwnd, IntPtr pdwFilterMode, int count, IntPtr pHWND);
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagSetColorEffect(IntPtr hwnd, ref ColorEffect pEffect);
+
+        [DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static extern bool MagGetColorEffect(IntPtr hwnd, ref ColorEffect pEffect);
+    }
+}

NativeStructures.cs

@@ -0,0 +1,597 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.InteropServices;
+using System.ComponentModel;
+
+namespace Karna.Magnification
+{
+    // Magnifier Window Styles
+    internal enum MagnifierStyle : int
+    {
+        MS_SHOWMAGNIFIEDCURSOR = 0x0001,
+        MS_CLIPAROUNDCURSOR = 0x0002,
+        MS_INVERTCOLORS = 0x0004
+    }
+
+    // Filter Modes
+    internal enum FilterMode
+    {
+        MW_FILTERMODE_EXCLUDE = 0,
+        MW_FILTERMODE_INCLUDE = 1
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct Transformation
+    {
+        public float m00;
+        public float m10;
+        public float m20;
+        public float m01;
+        public float m11;
+        public float m21;
+        public float m02;
+        public float m12;
+        public float m22;
+
+        public Transformation(float magnificationFactor)
+            : this()
+        {
+            m00 = magnificationFactor;
+            m11 = magnificationFactor;
+            m22 = 1.0f;
+        }
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct ColorEffect
+    {
+        public float transform00;
+        public float transform10;
+        public float transform20;
+        public float transform30;
+        public float transform40;
+        public float transform01;
+        public float transform02;
+        public float transform03;
+        public float transform04;
+        public float transform11;
+        public float transform12;
+        public float transform13;
+        public float transform14;
+        public float transform21;
+        public float transform22;
+        public float transform23;
+        public float transform24;
+        public float transform31;
+        public float transform32;
+        public float transform33;
+        public float transform34;
+        public float transform41;
+        public float transform42;
+        public float transform43;
+        public float transform44;
+    }
+
+    /// <summary>
+    /// A Wrapper for a POINT struct
+    /// </summary>
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "POINT"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1034:NestedTypesShouldNotBeVisible")]
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct POINT
+    {
+        /// <summary>
+        /// The X coordinate of the point
+        /// </summary>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "X")]
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
+        public int x;
+
+        /// <summary>
+        /// The Y coordinate of the point
+        /// </summary>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Y")]
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
+        public int y;
+
+        /// <summary>
+        /// Initialize the point
+        /// </summary>
+        /// <param name="x">The x coordinate of the point.</param>
+        /// <param name="y">The y coordinate of the point.</param>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "y"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "x")]
+        public POINT(int x, int y)
+        {
+            this.x = x;
+            this.y = y;
+        }
+    }
+
+    /// <summary>
+    /// A Wrapper for a RECT struct
+    /// </summary>
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "RECT"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1034:NestedTypesShouldNotBeVisible")]
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct RECT
+    {
+        /// <summary>
+        /// Position of left edge
+        /// </summary>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
+        public int left;
+
+        /// <summary>
+        /// Position of top edge
+        /// </summary>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
+        public int top;
+
+        /// <summary>
+        /// Position of right edge
+        /// </summary>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
+        public int right;
+
+        /// <summary>
+        /// Position of bottom edge
+        /// </summary>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
+        public int bottom;
+
+        public RECT(int left, int top, int right, int bottom)
+        {
+            this.left = left;
+            this.right = right;
+            this.top = top;
+            this.bottom = bottom;
+        }
+
+        public RECT(int width, int height)
+        {
+            this.left = 0;
+            this.top = 0;
+            this.right = width;
+            this.bottom = height;
+        }
+
+        public override bool Equals(object obj)
+        {
+            RECT r = (RECT)obj;
+            return (r.left == left && r.right == right && r.top == top && r.bottom == bottom);
+        }
+
+        public override int GetHashCode()
+        {
+            // Attempting a minor degree of "hash-ness" here
+            return ((left ^ top) ^ right) ^ bottom;
+        }
+
+        public static bool operator ==(RECT a, RECT b)
+        {
+            return (a.left == b.left && a.right == b.right && a.top == b.top && a.bottom == b.bottom);
+        }
+
+        public static bool operator !=(RECT a, RECT b)
+        {
+            return !(a == b);
+        }
+
+    }
+
+    /// <summary>
+    /// Specifies the style of the window being created
+    /// </summary>
+    [FlagsAttribute]
+    [Description("Specifies the style of the window being created")]
+    internal enum WindowStyles : int
+    {
+        /// <summary>
+        /// Creates an overlapped window. An overlapped window has a title bar and a border 
+        /// </summary>
+        WS_OVERLAPPED = 0x00000000,
+        /// <summary>
+        /// Creates a pop-up window
+        /// </summary>
+        WS_POPUP = -2147483648,
+        /// <summary>
+        /// Creates a child window. A window with this style cannot have a menu bar. 
+        /// This style cannot be used with the WS_POPUP style.
+        /// </summary>
+        WS_CHILD = 0x40000000,
+        /// <summary>
+        /// Creates a window that is initially minimized. 
+        /// Same as the WS_ICONIC style.
+        /// </summary>
+        WS_MINIMIZE = 0x20000000,
+        /// <summary>
+        /// Creates a window that is initially visible.
+        /// </summary>
+        WS_VISIBLE = 0x10000000,
+        /// <summary>
+        /// Creates a window that is initially disabled. 
+        /// A disabled window cannot receive input from the user
+        /// </summary>
+        WS_DISABLED = 0x08000000,
+        /// <summary>
+        /// Clips child windows relative to each other; that is, when a particular child window 
+        /// receives a WM_PAINT message, the WS_CLIPSIBLINGS style clips all other overlapping 
+        /// child windows out of the region of the child window to be updated. 
+        /// If WS_CLIPSIBLINGS is not specified and child windows overlap, it is possible, 
+        /// when drawing within the client area of a child window, to draw within the client area 
+        /// of a neighboring child window.
+        /// </summary>
+        WS_CLIPSIBLINGS = 0x04000000,
+        /// <summary>
+        /// Excludes the area occupied by child windows when drawing occurs within the parent window. 
+        /// This style is used when creating the parent window.
+        /// </summary>
+        WS_CLIPCHILDREN = 0x02000000,
+        /// <summary>
+        /// Creates a window that is initially maximized.
+        /// </summary>
+        WS_MAXIMIZE = 0x01000000,
+        /// <summary>
+        /// Creates a window that has a title bar (includes the WS_BORDER style).
+        /// </summary>
+        WS_CAPTION = 0x00C00000,
+        /// <summary>
+        /// Creates a window that has a thin-line border.
+        /// </summary>
+        WS_BORDER = 0x00800000,
+        /// <summary>
+        /// Creates a window that has a border of a style typically used with dialog boxes. 
+        /// A window with this style cannot have a title bar.
+        /// </summary>
+        WS_DLGFRAME = 0x00400000,
+        /// <summary>
+        /// Creates a window that has a vertical scroll bar.
+        /// </summary>
+        WS_VSCROLL = 0x00200000,
+        /// <summary>
+        /// Creates a window that has a horizontal scroll bar.
+        /// </summary>
+        WS_HSCROLL = 0x00100000,
+        /// <summary>
+        /// Creates a window that has a window menu on its title bar. 
+        /// The WS_CAPTION style must also be specified.
+        /// </summary>
+        WS_SYSMENU = 0x00080000,
+        /// <summary>
+        /// Creates a window that has a sizing border. 
+        /// Same as the WS_SIZEBOX style.
+        /// </summary>
+        WS_THICKFRAME = 0x00040000,
+        /// <summary>
+        /// Specifies the first control of a group of controls. 
+        /// The group consists of this first control and all controls defined after it, 
+        /// up to the next control with the WS_GROUP style. The first control in each group 
+        /// usually has the WS_TABSTOP style so that the user can move from group to group. 
+        /// The user can subsequently change the keyboard focus from one control in the group 
+        /// to the next control in the group by using the direction keys.
+        /// </summary>
+        WS_GROUP = 0x00020000,
+        /// <summary>
+        /// Specifies a control that can receive the keyboard focus when the user presses the TAB key. 
+        /// Pressing the TAB key changes the keyboard focus to the next control with the 
+        /// WS_TABSTOP style. 
+        /// </summary>
+        WS_TABSTOP = 0x00010000,
+        /// <summary>
+        /// Creates a window that has a minimize button. Cannot be combined with the WS_EX_CONTEXTHELP 
+        /// style. The WS_SYSMENU style must also be specified. 
+        /// </summary>
+        WS_MINIMIZEBOX = 0x00020000,
+        /// <summary>
+        /// Creates a window that has a maximize button. Cannot be combined with the 
+        /// WS_EX_CONTEXTHELP style. The WS_SYSMENU style must also be specified. 
+        /// </summary>
+        WS_MAXIMIZEBOX = 0x00010000
+    }
+
+    /// <summary>
+    ///Common window styles
+    /// </summary>
+    [Description("Common window styles")]
+    internal enum CommonWindowStyles : int
+    {
+        /// <summary>
+        ///Creates an overlapped window. An overlapped window has a title bar and a border. Same as the WS_OVERLAPPED style. 
+        /// </summary>
+        WS_TILED = WindowStyles.WS_OVERLAPPED,
+        /// <summary>
+        ///Creates a window that is initially minimized. Same as the WS_MINIMIZE style.
+        /// </summary>
+        WS_ICONIC = WindowStyles.WS_MINIMIZE,
+        /// <summary>
+        ///Creates a window that has a sizing border. Same as the WS_THICKFRAME style.
+        /// </summary>
+        WS_SIZEBOX = WindowStyles.WS_THICKFRAME,
+        /// <summary>
+        /// Creates an overlapped window with the WS_OVERLAPPED, WS_CAPTION, WS_SYSMENU, WS_THICKFRAME, WS_MINIMIZEBOX, and WS_MAXIMIZEBOX styles. Same as the WS_TILEDWINDOW style. 
+        /// </summary>
+        WS_OVERLAPPEDWINDOW = (WindowStyles.WS_OVERLAPPED | WindowStyles.WS_CAPTION | WindowStyles.WS_SYSMENU | WindowStyles.WS_THICKFRAME | WindowStyles.WS_MINIMIZEBOX | WindowStyles.WS_MAXIMIZEBOX),
+        /// <summary>
+        ///Creates an overlapped window with the WS_OVERLAPPED, WS_CAPTION, WS_SYSMENU, WS_THICKFRAME, WS_MINIMIZEBOX, and WS_MAXIMIZEBOX styles. Same as the WS_OVERLAPPEDWINDOW style.  
+        /// </summary>
+        WS_TILEDWINDOW = WS_OVERLAPPEDWINDOW,
+        /// <summary>
+        ///Creates a pop-up window with WS_BORDER, WS_POPUP, and WS_SYSMENU styles. The WS_CAPTION and WS_POPUPWINDOW styles must be combined to make the window menu visible.
+        /// </summary>
+        WS_POPUPWINDOW = (WindowStyles.WS_POPUP |
+                          WindowStyles.WS_BORDER |
+                          WindowStyles.WS_SYSMENU),
+        /// <summary>
+        ///Same as the WS_CHILD style.
+        /// </summary>
+        WS_CHILDWINDOW = (WindowStyles.WS_CHILD)
+    }
+
+    [FlagsAttribute]
+    internal enum SetWindowPosFlags : int
+    {
+        SWP_NOSIZE = 1,
+        SWP_NOMOVE = 2,
+        SWP_NOZORDER = 4,
+        SWP_NOREDRAW = 8,
+        SWP_NOACTIVATE = 0x10,
+        SWP_FRAMECHANGED = 0x20,
+        SWP_SHOWWINDOW = 0x40,
+        SWP_HIDEWINDOW = 0x80,
+        SWP_NOCOPYBITS = 0x100,
+        SWP_NOOWNERZORDER = 0x200,
+        SWP_NOSENDCHANGING = 0x400
+    }
+
+    /// <summary>
+    /// Specifies the extended style of the window
+    /// </summary>
+    [FlagsAttribute]
+    [Description("Specifies the extended style of the window")]
+    internal enum ExtendedWindowStyles : int
+    {
+        /// <summary>
+        /// Creates a window that has a double border; the window can, optionally, 
+        /// be created with a title bar by specifying the WS_CAPTION style in the dwStyle parameter.
+        /// </summary>
+        WS_EX_DLGMODALFRAME = 0x00000001,
+        /// <summary>
+        /// Specifies that a child window created with this style does not send 
+        /// the WM_PARENTNOTIFY message to its parent window when it is created or destroyed.
+        /// </summary>
+        WS_EX_NOPARENTNOTIFY = 0x00000004,
+        /// <summary>
+        /// Specifies that a window created with this style should be placed above all nontopmost 
+        /// windows and stay above them even when the window is deactivated
+        /// </summary>
+        WS_EX_TOPMOST = 0x00000008,
+        /// <summary>
+        /// Windows that can accept dragged objects must be created with this style so that 
+        /// Windows can determine that the window will accept objects and can change the drag/drop 
+        /// cursor as the user drags an object over the window. 
+        /// </summary>
+        WS_EX_ACCEPTFILES = 0x00000010,
+        /// <summary>
+        /// The WS_EX_TRANSPARENT style makes a window transparent; that is, the window can be seen through, 
+        /// and anything under the window is still visible. Transparent windows are not transparent 
+        /// to mouse or keyboard events. A transparent window receives paint messages when anything 
+        /// under it changes. Transparent windows are useful for drawing drag handles on top of other 
+        /// windows or for implementing "hot-spot" areas without having to hit test because the transparent 
+        /// window receives click messages. 
+        /// </summary>
+        WS_EX_TRANSPARENT = 0x00000020,
+        /// <summary>
+        /// Creates an MDI child window. 
+        /// </summary>
+        WS_EX_MDICHILD = 0x00000040,
+        /// <summary>
+        /// Creates a tool window, which is a window intended to be used as a floating toolbar. 
+        /// A tool window has a title bar that is shorter than a normal title bar, and the window title 
+        /// is drawn using a smaller font. A tool window does not appear in the task bar or in the window 
+        /// that appears when the user presses ALT+TAB. 
+        /// </summary>
+        WS_EX_TOOLWINDOW = 0x00000080,
+        /// <summary>
+        /// Specifies that a window has a border with a raised edge. 
+        /// </summary>
+        WS_EX_WINDOWEDGE = 0x00000100,
+        /// <summary>
+        ///  Specifies that a window has a 3D look — that is, a border with a sunken edge. 
+        /// </summary>
+        WS_EX_CLIENTEDGE = 0x00000200,
+        /// <summary>
+        /// Includes a question mark in the title bar of the window. 
+        /// When the user clicks the question mark, the cursor changes to a question mark with a pointer. 
+        /// If the user then clicks a child window, the child receives a WM_HELP message. 
+        /// </summary>
+        WS_EX_CONTEXTHELP = 0x00000400,
+        /// <summary>
+        /// Gives a window generic right-aligned properties. This depends on the window class. 
+        /// </summary>
+        WS_EX_RIGHT = 0x00001000,
+        /// <summary>
+        /// Gives window generic left-aligned properties. This is the default. 
+        /// </summary>
+        WS_EX_LEFT = 0x00000000,
+        /// <summary>
+        /// Displays the window text using right-to-left reading order properties. 
+        /// </summary>
+        WS_EX_RTLREADING = 0x00002000,
+        /// <summary>
+        /// Displays the window text using left-to-right reading order properties. This is the default. 
+        /// </summary>
+        WS_EX_LTRREADING = 0x00000000,
+        /// <summary>
+        /// Places a vertical scroll bar to the left of the client area. 
+        /// </summary>
+        WS_EX_LEFTSCROLLBAR = 0x00004000,
+        /// <summary>
+        /// Places a vertical scroll bar (if present) to the right of the client area. This is the default. 
+        /// </summary>
+        WS_EX_RIGHTSCROLLBAR = 0x00000000,
+        /// <summary>
+        /// Allows the user to navigate among the child windows of the window by using the TAB key. 
+        /// </summary>
+        WS_EX_CONTROLPARENT = 0x00010000,
+        /// <summary>
+        /// Creates a window with a three-dimensional border style intended to be used for items that 
+        /// do not accept user input. 
+        /// </summary>
+        WS_EX_STATICEDGE = 0x00020000,
+        /// <summary>
+        /// Forces a top-level window onto the taskbar when the window is visible. 
+        /// </summary>
+        WS_EX_APPWINDOW = 0x00040000,
+        /// <summary>
+        /// Creates a layered window. Note that this cannot be used for child windows
+        /// </summary>
+        WS_EX_LAYERED = 0x00080000,
+        /// <summary>
+        /// A window created with this style does not pass its window layout to its child windows.
+        /// </summary>
+        WS_EX_NOINHERITLAYOUT = 0x00100000,
+        /// <summary>
+        /// Creates a window whose horizontal origin is on the right edge. 
+        /// Increasing horizontal values advance to the left. 
+        /// </summary>
+        WS_EX_LAYOUTRTL = 0x00400000,
+        /// <summary>
+        /// Paints all descendants of a window in bottom-to-top painting order using double-buffering. 
+        /// </summary>
+        WS_EX_COMPOSITED = 0x02000000,
+        /// <summary>
+        /// A top-level window created with this style does not become the foreground window when the user 
+        /// clicks it. The system does not bring this window to the foreground when the user minimizes 
+        /// or closes the foreground window. 
+        /// </summary>
+        WS_EX_NOACTIVATE = 0x08000000
+    }
+
+    /// <summary>
+    /// Common extended window styles
+    /// </summary>
+    [Description("Common extended window styles")]
+    internal enum CommonExtendedWindowStyles : int
+    {
+        /// <summary>
+        /// Combines the WS_EX_CLIENTEDGE and WS_EX_WINDOWEDGE styles.
+        /// </summary>
+        WS_EX_OVERLAPPEDWINDOW = (ExtendedWindowStyles.WS_EX_WINDOWEDGE |
+                                  ExtendedWindowStyles.WS_EX_CLIENTEDGE),
+        /// <summary>
+        /// Combines the WS_EX_WINDOWEDGE, WS_EX_TOOLWINDOW, and WS_EX_TOPMOST styles.
+        /// </summary>
+        WS_EX_PALETTEWINDOW = (ExtendedWindowStyles.WS_EX_WINDOWEDGE |
+                                  ExtendedWindowStyles.WS_EX_TOOLWINDOW |
+                                  ExtendedWindowStyles.WS_EX_TOPMOST)
+    }
+
+    /// <summary>
+    /// Layered window flags
+    /// </summary>
+    [FlagsAttribute]
+    [Description("Layered window flags")]
+    internal enum LayeredWindowAttributeFlags : int
+    {
+        /// <summary>
+        /// Use key as a transparency color
+        /// </summary>
+        LWA_COLORKEY = 0x00000001,
+        /// <summary>
+        /// Use Alpha to determine the opacity of the layered window.
+        /// </summary>
+        LWA_ALPHA = 0x00000002
+    }
+
+
+    [FlagsAttribute]
+    internal enum LayeredWindowUpdateFlags : int
+    {
+        ULW_COLORKEY = 0x00000001,
+        ULW_ALPHA = 0x00000002,
+        ULW_OPAQUE = 0x00000004
+    }
+
+    [FlagsAttribute]
+    internal enum BlendOperations : byte
+    {
+        AC_SRC_OVER = 0x00,
+        AC_SRC_ALPHA = 0x01
+    }
+
+    internal enum ShowWindowStyles : short
+    {
+        SW_HIDE = 0,
+        SW_SHOWNORMAL = 1,
+        SW_NORMAL = 1,
+        SW_SHOWMINIMIZED = 2,
+        SW_SHOWMAXIMIZED = 3,
+        SW_MAXIMIZE = 3,
+        SW_SHOWNOACTIVATE = 4,
+        SW_SHOW = 5,
+        SW_MINIMIZE = 6,
+        SW_SHOWMINNOACTIVE = 7,
+        SW_SHOWNA = 8,
+        SW_RESTORE = 9,
+        SW_SHOWDEFAULT = 10,
+        SW_FORCEMINIMIZE = 11,
+        SW_MAX = 11
+    }
+
+    internal enum WindowMessage : int
+    {
+        WM_CREATE = 0x0001,
+        WM_DESTROY = 0x0002,
+        WM_PAINT = 0x000F,
+        WM_CLOSE = 0x0010,
+        WM_QUERYENDSESSION = 0x0011,
+        WM_QUIT = 0x0012,
+        WM_ENDSESSION = 0x0016,
+        WM_SETCURSOR = 0x0020,
+        WM_MOVE = 0x0003,
+        WM_SIZE = 0x0005,
+        WM_MOUSEMOVE = 0x0200,
+        WM_NCMOUSEMOVE = 0x00A0,
+        WM_KEYDOWN = 0x0100,
+        WM_SYSKEYDOWN = 0x0104,
+        WM_KEYUP = 0x0101,
+        WM_CHAR = 0x0102,
+        WM_SYSCHAR = 0x0106,
+        WM_LBUTTONDOWN = 0x0201,
+        WM_LBUTTONUP = 0x0202,
+        WM_LBUTTONDBLCLK = 0x0203,
+        WM_RBUTTONDOWN = 0x0204,
+        WM_RBUTTONUP = 0x0205,
+        WM_RBUTTONDBLCLK = 0x0206,
+        WM_MBUTTONDOWN = 0x0207,
+        WM_MBUTTONUP = 0x0208,
+        WM_MBUTTONDBLCLK = 0x0209,
+        WM_MOUSEWHEEL = 0x020A,
+        WM_MOUSEHOVER = 0x02A1,
+        WM_MOUSELEAVE = 0x02A3,
+        WM_NCLBUTTONDOWN = 0x00A1,
+        WM_NCLBUTTONUP = 0x00A2,
+        WM_NCLBUTTONDBLCLK = 0x00A3,
+        WM_NCRBUTTONDOWN = 0x00A4,
+        WM_NCRBUTTONUP = 0x00A5,
+        WM_NCRBUTTONDBLCLK = 0x00A6,
+        WM_NCMBUTTONDOWN = 0x00A7,
+        WM_NCMBUTTONUP = 0x00A8,
+        WM_NCMBUTTONDBLCLK = 0x00A9,
+        WM_NCXBUTTONDOWN = 0x00AB,
+        WM_NCXBUTTONUP = 0x00AC,
+        WM_GETDLGCODE = 0x0087,
+        WM_NCHITTEST = 0x0084,
+        WM_WINDOWPOSCHANGING = 0x0046,
+        WM_WINDOWPOSCHANGED = 0x0047,
+        WM_KILLTIMER = 0x402,
+        WM_TIMER = 0x113,
+        WM_NCPAINT = 0x85,
+        WM_ERASEBKGND = 20,
+        WM_DROPFILES = 0x233,
+        WM_MOUSEACTIVATE = 0x0021,
+        WM_ACTIVATE = 0x0006,
+        WM_ACTIVATEAPP = 0x001C,
+        WM_KILLFOCUS = 8
+    }
+
+}

Program.cs

@@ -0,0 +1,17 @@
+namespace WindowOverlayApp
+{
+    internal static class Program
+    {
+        /// <summary>
+        ///  The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            // To customize application configuration such as set high DPI settings or default font,
+            // see https://aka.ms/applicationconfiguration.
+            ApplicationConfiguration.Initialize();
+            Application.Run(new Form1());
+        }
+    }
+}

README.md

@@ -0,0 +1,17 @@
+# Vivado Dark Mode
+
+This will eventually become a program to make any windows application dark mode, stay tuned.
+
+This demo uses the Windows magnification API to invert a window and make it dark mode.
+
+## Bugs/Notes
+
+- When switching windows, it will momentarily flash. This is because of some latency in handling the window foreground event, I am not sure if it is possible to improve on this to make it less noticeable.
+- Currently this handles sub-windows (such as save dialogs) by making the magnification window have the maximum Z order. This simplifies things, but also means if another window is over the active window it too will be inverted
+  - Creating magnification lenses for each window with the Z height 1 above the relavant window would fix this issue.
+
+## License
+
+[karna-magnification](https://github.com/perevoznyk/karna-magnification?tab=MPL-2.0-1-ov-file#readme) is licensed under the MPL 2.0. See `LICENSE_Karna.Magnification`
+
+This demo is licensed under GPL-3.0

WindowOverlayApp.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

WindowOverlayApp.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35303.130
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WindowOverlayApp", "WindowOverlayApp.csproj", "{FBF6A264-2DC0-4F26-9ED3-074C1C12B402}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{FBF6A264-2DC0-4F26-9ED3-074C1C12B402}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FBF6A264-2DC0-4F26-9ED3-074C1C12B402}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FBF6A264-2DC0-4F26-9ED3-074C1C12B402}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FBF6A264-2DC0-4F26-9ED3-074C1C12B402}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {75F5EFC7-D68A-4088-8875-411C0C0EBFAA}
+	EndGlobalSection
+EndGlobal