Draw Annotation(SKRect, String, SKData) Method
Send an key/value pair "annotation" to the canvas.
public void DrawAnnotation (SkiaSharp.SKRect rect, string key, SkiaSharp.SKData value);
The bounds of the annotation.
The name of the annotation.
The blob of data to attach to the annotation.
The caller still retains its ownership of the data (if any).
Note: on may canvas types, this information is ignored, but some canvases (e.g. recording a picture or drawing to a PDF document) will pass on this information.