put method
Implementation
void put( int x, int y ){
_p!.style = ui.PaintingStyle.fill;
_p!.color = ui.Color.fromARGB( _canvasEnv._colorA, _canvasEnv._colorR, _canvasEnv._colorG, _canvasEnv._colorB );
_c!.drawRect( ui.Rect.fromLTWH( x.toDouble(), y.toDouble(), 1, 1 ), _p! );
}