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Occurs before the RadioButton is drawn.

 

 

 

Prototype :

 

void OnPreDraw

(

       DrawingContext ctx

)

 

 

 

Arguments :

 

 

 

 

Example :

 

//filled half circle

  ctx.fillStyle = "#FF0000";

  ctx.arc(30, 30, 20, 0, Math.PI, true);

  ctx.fill();

 

 

 

See also :

 

DrawingContext