README.md

d2dlib

Direct2D wrapper library for .NET applications. This library uses Direct2D graphics API to provide the high performance hardware accelerated instant rendering ability.

The graphics context class is designed like normal Windows Form GDI+ graphics API, easily use and user friendly.

About the projects

Project	Language	Description	Output DLL
d2dlib	VC++	Direct2D wrapper host side library, calling Windows SDK and Direct2D API	d2dlib.dll
d2dlibexport	C#	Direct2D client side interface between .NET and VC++ library, calling d2dlib.dll	d2dlibexport.dll
d2dlibexportwinform	C#	Provides the .NET classes like D2DWinForm and D2DControl that use Direct2D hardware-acceleration rendering	d2dlibwinform.dll

How to use

1. Compile every projects or use the DLLs from the binary folder directly
2. Add d2dlibexport.dll and d2dlibwinform.dll as application references
3. Put d2dlib.dll in the Debug, Release or folder where application runs
4. Make windows form or control inherited from D2DForm or D2DControl class
5. Override OnRender(D2DGraphics g) method (do not override .NET OnPaint method)
6. Draw anything inside OnRender method via the g context

Notice

The platform target of application project must be set to x86 when using default build configuration.

Hello World

Draw text

g.DrawText("Hello World", D2DColor.Yellow, this.Font, 100, 200);

Draw ellipse

protected override void OnRender(D2DGraphics g)
{
  var ellipse = new D2DEllipse(0, 0, 10, 10);
  g.DrawEllipse(ref ellipse, D2DColor.Gray);
}

Memory device bitmap

var bmpGraphics = this.Device.CreateBitmapGraphics(1024, 1024);
bmpGraphics.BeginRender();
bmpGraphics.FillRectangle(170, 790, 670, 80, new D2DColor(0.4f, D2DColor.Black));
bmpGraphics.DrawText("This is Direct2D device bitmap", D2DColor.Goldenrod, this.Font, 180, 800);
bmpGraphics.EndRender();

// draw this device bitmap on screen
g.DrawBitmap(bmpGraphics, this.ClientRectangle);

Learn more about Bitmap.

Examples

Fast images rendering See source code

Custom draw on memory bitmap See source code

Star space simulation See source code

Subtitle rendering See source code

Whiteboard App
See source code