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Keymouse Serial Key Full Version

The Keymouse application was developed to be a small Windows utility that remaps the right "Alt" key so it becomes the right mouse button instead. Useful for people with only one mouse button.

This program installs a "low level keyboard hook". Whenever the right alt key (VK_RMENU) goes down, we generate a right-mouse-down event. When the right alt key goes up, we generate a right-mouse-up event. To respond to other keypresses instead, look in MSDN or winuser.h

Generation of events is by SendInput(..), a Windows NT/2k/XP function.

But unlike most global hooks (which have to reside in a DLL), the WH_KEYBOARD_LL can instead reside in an EXE. What Windows does is, whenever it receives a keypress, it switches to the context of the EXE that contained the hook, then invokes the hook function, then restores context back to what it was before.

But (1) with a window we can exit more gracefully (and we can also choose to appear in the Process List of the taskmanager). And (2) keyboard hooks fail to work when there's just a tight infinite loop of Sleep(). It just wasn't working. Then when I created the window and did a message-loop it magically started working. My guess is that the context-switching might internally use the message-loop mechanism, or something like that.