How does WinTabber work?

How does WinTabber work? It can take the main window of another application and display it as a WinTabber 开发者_JAVA技巧child window. What system calls do this?

You have to use SetParent(). And probably MoveWindow() to force the app to fit its main window in your tab. And you'll have to do something reasonable when the process opens other toplevel windows, a WH_SHELL hook is probably needed. And probably a bunch of hacks to whack popular programs into shape that don't like you messing with their main window.