Intercept keystrokes

How can I write a program that runs in
the background and intercepts

Is there some MFC that does this for me?

What I want to do is be able to remap
keystrokes so I can duplicate the program
found at

for example I could press the letter f
and the spacebar at the time and the
program would intercept that and pass
along a j.

Bill Blair

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You need to install a system hook to intercept all keyboard messages for all windows on a system.  VB cannot do this alone, you need a hook proc located in a standard DLL.  The following site contains information on how to do this along with supporting DLLs:
wblair8689Author Commented:
A link to another site isn't really an answer - although the link was helpful.
This MICROSOFT KB article has a complete example of intercepting keys...

HOWTO: Intercept Keyboard Input from Visual Basic

Remember to unhook the keyboard handler when you use the example in build mode...

VB will crash if you stop it and the key handler is still active...


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wblair8689Author Commented:
It looks like vb can not do this. It is not able to create system dll's to capture system events.
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Visual Basic Classic

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