SKGLControl.OnPaintSurface(SKPaintGLSurfaceEventArgs) Method

Definition

Namespace:

SkiaSharp.Views.Desktop

Assembly:

SkiaSharp.Views.WindowsForms.dll

Implement this to draw on the canvas.

C#

protected virtual void OnPaintSurface (SkiaSharp.Views.Desktop.SKPaintGLSurfaceEventArgs e);

Parameters

e

SKPaintGLSurfaceEventArgs

The event arguments that contain the drawing surface and information.

Examples

C#

protected override void OnPaintSurface (SKPaintGLSurfaceEventArgs e)
{
    // call the base method
    base.OnPaintSurface (e);

    var surface = e.Surface;
    var surfaceWidth = e.BackendRenderTarget.Width;
    var surfaceHeight = e.BackendRenderTarget.Height;

    var canvas = surface.Canvas;

    // draw on the canvas

    canvas.Flush ();
}

Remarks

There are two ways to draw on this surface: by overriding the OnPaintSurface(SKPaintGLSurfaceEventArgs) method, or by attaching a handler to the PaintSurface event. If the method is overridden, then the base must be called.

Tärkeä

If this method is overridden, then the base must be called, otherwise the event will not be fired.

Applies to