following is taken from MSDN article - "win32 hooks":
Simulate mouse and keyboard input (WH_JOURNALPLAYBACK). Hooks provide the only reliable way to simulate these activities. If you try to simulate these events by sending or posting messages, Windows internals do not update the keyboard or mouse state, which can lead to unexpected behavior. If hooks are used to play back keyboard or mouse events, these events are processed exactly like real keyboard or mouse events.
question is : is there any chance for us to distinguish the simulated events from real events ?
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