In the DirectInput Mouse sample, I create the Device using Exclusive|Foreground|Immediate mode, then I switch to another window by ALT-TAB, and the DirectInput Mouse window loses it's focus. I click on the X button on that window, to close it, but it hangs.. I mean, not reacquiring the mouse input, or closing the window. but it just hangs, and the only way to un-hang it is by pressing ALT-TAB again to switch to another window. Does anyone has the same problem?