Unfortunately all that code does is register a hot key. It's just a windows API call that enables a program to receive global hot keys (e.g. CTRL+ALT+Z). It won't allow your program to receive all keyboard input.

There is a good essay on how to set up a global mouse hook over at the code project

In reply to Re^3: Reading keyboard input without focus by lostjimmy
in thread Reading keyboard input without focus by KovaaK

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