Attached is simple demo program with one customized push button. When you press the button, it should change color to red, and after two seconds back to original color. The two sec delay is implemented by calling processEvents. In Qt/Windows and in S60 5.0 emulator the demo works as specified. But for example in 5800 Music Express HW, the color is not changed after clicking the button, but the button just flashed in red after two secs and then immediately changes back to original color.