Is there a way of detecting the creation of a class of window without looping (with while 1 and sleep). I'd like to detect the presence of a window immediately (without sleep pauses in a loop). Is there a callback (hook) available that can be used? WINWAIT is another way of doing it, but I'd like to be doing other things at the same time (this is part of another program). I want to use this to freeze a system prompt window on the screen for at least 5 seconds before allowing the user to an