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I’ve been unable to figure out what IsGUIThread really does… I’ve even looked at the ReactOS source code, but I can’t figure it out.
Any ideas why you might call it?
IsGUIThreadtells you if the current thread is a GUI thread – that is a thread that is running a message loop.What it actually does is check if the current thread has GUI thread info (see
GetGUIThreadInfoin MSDN.I have never used this function but one possible use I would guess is to allow code to defer slow tasks to a worker thread if the current thread is a GUI thread.