How to draw with Maui.Graphics in a Windows Forms application
This page describes how to draw using Maui.Graphics from a Windows Forms application.
1. Create a WinForms Application
dotnet new WinForms
2. Add NuGet Packages
dotnet add package Microsoft.Maui.Graphics
dotnet add package Microsoft.Maui.Graphics.Skia
dotnet add package SkiaSharp.Views.WindowsForms
3. Add a SkiaSharp Control
Drag a SKGLControl from the toolbox and drop it onto your Form.
4. Draw Graphics
Double-click the SKGLControl to create a PaintSurface EventHandler and method where you can add your drawing code:
private void skglControl1_PaintSurface(object sender, SkiaSharp.Views.Desktop.SKPaintGLSurfaceEventArgs e)
{
ICanvas canvas = new SkiaCanvas() { Canvas = e.Surface.Canvas };
canvas.FillColor = Colors.Navy;
canvas.FillRectangle(0, 0, skglControl1.Width, skglControl1.Height);
canvas.StrokeColor = Colors.White.WithAlpha(.5f);
canvas.StrokeSize = 2;
for (int i = 0; i < 100; i++)
{
float x = Random.Shared.Next(skglControl1.Width);
float y = Random.Shared.Next(skglControl1.Height);
float r = Random.Shared.Next(5, 50);
canvas.DrawCircle(x, y, r);
}
}
5. Render on Events
It is often a good idea to re-render when the window size changes
private void skglControl1_SizeChanged(object s, EventArgs e) => skglControl1.Invalidate();
You can also request renders manually or automatically using a timer
private void button1_Click(object s, EventArgs e) => skglControl1.Invalidate();
private void timer1_Tick(object s, EventArgs e) => skglControl1.Invalidate();