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ID: 23352, Windows Keyboard Event Notification

by dean sellers Email: Anonymous


Uses SetWindowsHook API to fire event when user setable keys change state. Demonstrates using SetWindowsHook.
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For Delphi, Version 5.0  to 5.0 406 downloads
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Size: 165,900 bytes
Updated on Tue, 28 Jun 2005 21:21:58 GMT
Originally uploaded on Tue, 28 Jun 2005 21:25:27 GMT
SHA1 Hash: BB465468FD8B60AEB2B7430CE2F139581F99CD2A
MD5 Hash: C45D7F73A55AFC6A395B51E202E6F47E

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Description
Handy for use in non-visual components or when you want to change a control that doesn't have focus based on keyboard events. Will not impact on normal keyboard handling.
I wrote it to use in a frame (no key events) to change a button caption and function when the control key is down. Add the virtual keycode(s) you are interested in watching and provide a method pointer and you are away.
Hopefully the demo app is explaination enough. Since it just uses API calls it should work with most versions of Delphi but I still use 5 so that is all I've tested on.
Credits: The functions in BitTools.pas are not mine, I downloaded them from Code Central ID:19824 and added the function exports to the interface section. (These are some of the handiest little functions I've used from here, nice work!)

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