If you don't set the delegate and it works for you then see what those who logged the bugs are doing, if they are not changing the delgate then I have no clue. If they are then that's your problem, you could add a check to see if the degelage is a valid type:
public Object getVideoControl(Object player) {
Manager man = canvas.getDelegate();
//Make sure that the delegate is a valid type.
if(!(man instanceof javax.microedition.lcdui.Canvas))
{
System.err.println("Non-compatable Canvas, returning null");
return null;
}
VideoControl vidc = (VideoControl)((Player)player).getControl("VideoControl");
vidc.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, man);
return vidc;
}
Double-buffering shouldn't be a problem.
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