DXGICapture

C++ Library with C exports to capture screen with Windows Desktop Duplication API

Original code from WindowsDesktopDuplicationSample!

This library is used by CSAuto to capture the screen of CS2

Features

• Multi-monitor support
• Rotation handling
• C exports for easy interop with C# and other languages

System Requirements

• Windows 8 or later
• DXGI 1.2+ compatible GPU
• DirectX 11 support

Build Instructions

1. Open the solution in Visual Studio 2022
2. Select your target platform (x64 or x86)
3. Build the project (Release or Debug configuration)
4. The compiled DLL will be in the bin folder

Usage

C#

Example DXGIcapture.cs class in here

// Create new DXGICapture object
DXGICapture DXGIcapture = new DXGICapture();
// Initialize the capture
DXGIcapture.Init();
// Get pointer to the bitmap
IntPtr _handle = DXGIcapture.GetCapture();
// Check for invalid capture
if (_handle == IntPtr.Zero)
{
    DXGIcapture.DeInit();
    DXGIcapture.Init();
    _handle = DXGIcapture.GetCapture();
}
using (Bitmap bitmap = Image.FromHbitmap(_handle))
{
    // Do stuff with bitmap
}
// Deinitialize capture
DXGIcapture.DeInit();

Thread Safety

The C++ library is NOT thread-safe. All methods must be called from a single thread or externally synchronized. The C# wrapper provides thread-safety through locking.

License

MIT License - See LICENSE file for details

Copyright (c) 2025 MurkyYT