public static class Extensions {
	// methods
	public static System.Drawing.PointF ToDrawingPoint (this SkiaSharp.SKPoint point);
	public static System.Drawing.Point ToDrawingPoint (this SkiaSharp.SKPointI point);
	public static System.Drawing.RectangleF ToDrawingRect (this SkiaSharp.SKRect rect);
	public static System.Drawing.Rectangle ToDrawingRect (this SkiaSharp.SKRectI rect);
	public static System.Drawing.SizeF ToDrawingSize (this SkiaSharp.SKSize size);
	public static System.Drawing.Size ToDrawingSize (this SkiaSharp.SKSizeI size);
	public static SkiaSharp.SKPointI ToSKPoint (this System.Drawing.Point point);
	public static SkiaSharp.SKPoint ToSKPoint (this System.Drawing.PointF point);
	public static SkiaSharp.SKRectI ToSKRect (this System.Drawing.Rectangle rect);
	public static SkiaSharp.SKRect ToSKRect (this System.Drawing.RectangleF rect);
	public static SkiaSharp.SKSizeI ToSKSize (this System.Drawing.Size size);
	public static SkiaSharp.SKSize ToSKSize (this System.Drawing.SizeF size);
}

public class SKPaintGLSurfaceEventArgs : System.EventArgs {
	// constructors
	public SKPaintGLSurfaceEventArgs (SkiaSharp.SKSurface surface, SkiaSharp.GRBackendRenderTarget renderTarget);

	[Obsolete ("Use SKPaintGLSurfaceEventArgs(SKSurface, GRBackendRenderTarget, SKColorType, GRSurfaceOrigin) instead.")]
public SKPaintGLSurfaceEventArgs (SkiaSharp.SKSurface surface, SkiaSharp.GRBackendRenderTargetDesc renderTarget);
	public SKPaintGLSurfaceEventArgs (SkiaSharp.SKSurface surface, SkiaSharp.GRBackendRenderTarget renderTarget, SkiaSharp.GRSurfaceOrigin origin, SkiaSharp.SKColorType colorType);
	public SKPaintGLSurfaceEventArgs (SkiaSharp.SKSurface surface, SkiaSharp.GRBackendRenderTarget renderTarget, SkiaSharp.GRSurfaceOrigin origin, SkiaSharp.SKColorType colorType, SkiaSharp.GRGlFramebufferInfo glInfo);
	// properties
	public SkiaSharp.GRBackendRenderTarget BackendRenderTarget { get; }
	public SkiaSharp.SKColorType ColorType { get; }
	public SkiaSharp.GRSurfaceOrigin Origin { get; }

	[Obsolete ("Use BackendRenderTarget instead.")]
public SkiaSharp.GRBackendRenderTargetDesc RenderTarget { get; }
	public SkiaSharp.SKSurface Surface { get; }
}

public class SKPaintSurfaceEventArgs : System.EventArgs {
	// constructors
	public SKPaintSurfaceEventArgs (SkiaSharp.SKSurface surface, SkiaSharp.SKImageInfo info);
	// properties
	public SkiaSharp.SKImageInfo Info { get; }
	public SkiaSharp.SKSurface Surface { get; }
}

public class SKXamlCanvas : Microsoft.UI.Xaml.Controls.Canvas, Microsoft.UI.Composition.IAnimationObject, Microsoft.UI.Composition.IVisualElement, Microsoft.UI.Composition.IVisualElement2, System.IEquatable<Microsoft.UI.Xaml.Controls.Canvas>, System.IEquatable<Microsoft.UI.Xaml.Controls.Panel>, System.IEquatable<Microsoft.UI.Xaml.DependencyObject>, System.IEquatable<Microsoft.UI.Xaml.FrameworkElement>, System.IEquatable<Microsoft.UI.Xaml.UIElement>, System.Runtime.InteropServices.ICustomQueryInterface, System.Runtime.InteropServices.IDynamicInterfaceCastable, WinRT.IWinRTObject {
	// constructors
	public SKXamlCanvas ();
	// properties
	public SkiaSharp.SKSize CanvasSize { get; }
	public double Dpi { get; }
	public bool IgnorePixelScaling { get; set; }
	// events
	public event System.EventHandler<SKPaintSurfaceEventArgs> PaintSurface;
	// methods
	public void Invalidate ();
	protected virtual void OnPaintSurface (SKPaintSurfaceEventArgs e);
}

public static class WindowsExtensions {
	// methods
	public static Windows.UI.Color ToColor (this SkiaSharp.SKColor color);
	public static Windows.Foundation.Point ToPoint (this SkiaSharp.SKPoint point);
	public static Windows.Foundation.Rect ToRect (this SkiaSharp.SKRect rect);
	public static SkiaSharp.SKBitmap ToSKBitmap (this Microsoft.UI.Xaml.Media.Imaging.WriteableBitmap bitmap);
	public static SkiaSharp.SKColor ToSKColor (this Windows.UI.Color color);
	public static SkiaSharp.SKImage ToSKImage (this Microsoft.UI.Xaml.Media.Imaging.WriteableBitmap bitmap);
	public static bool ToSKPixmap (this Microsoft.UI.Xaml.Media.Imaging.WriteableBitmap bitmap, SkiaSharp.SKPixmap pixmap);
	public static SkiaSharp.SKPoint ToSKPoint (this Windows.Foundation.Point point);
	public static SkiaSharp.SKRect ToSKRect (this Windows.Foundation.Rect rect);
	public static SkiaSharp.SKSize ToSKSize (this Windows.Foundation.Size size);
	public static Windows.Foundation.Size ToSize (this SkiaSharp.SKSize size);
	public static Microsoft.UI.Xaml.Media.Imaging.WriteableBitmap ToWriteableBitmap (this SkiaSharp.SKBitmap skiaBitmap);
	public static Microsoft.UI.Xaml.Media.Imaging.WriteableBitmap ToWriteableBitmap (this SkiaSharp.SKImage skiaImage);
	public static Microsoft.UI.Xaml.Media.Imaging.WriteableBitmap ToWriteableBitmap (this SkiaSharp.SKPixmap pixmap);
	public static Microsoft.UI.Xaml.Media.Imaging.WriteableBitmap ToWriteableBitmap (this SkiaSharp.SKPicture picture, SkiaSharp.SKSizeI dimensions);
}