Content originally posted in LPCWare by TheFallGuy on Thu Feb 16 10:24:07 MST 2012
I don't know about emWin, but normally you have to provide two images for a button - its 'normal' state and its 'depressed' state. Your description implies that you have supplied the image for the normal state, but not for the depressed state.
BTW: When pasting code, please enclose it in a code block.