BrewMan,
Thanks for Ur response. Really helpful to know u need to disable the picture to make the button to work.
I would also really like to know from you, how to make a picture directly clickable.
For now i solved it by putting the picture in the button with:
Global $button = GUICtrlCreateButton("Close", 0, 0, 500, 213, 0x8080) ; 0x8080 = $BS_BITMAP
GUICtrlSetImage(-1, "matrix.bmp", -1)
GUICtrlSetOnEvent(-1, "On_Close")
