Widget painting

Painting defines how widgets present themselves graphically (using: colors, transparencies, and so on), as well as clipping.

The Px Editor always positions the origin (0,0) of a graphic at the top, left corner of the widget. It sets the graphic's clip (visible area) to the widget's size. Alpha and transparent pixels blend with the pixels already drawn. The Px Editor draws widgets in property order beginning with the widget at the bottom and ending with the widget at the top. Effective z-order is the reverse of property order.