Check if 2 keys are being pressed at the same time

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Hi, i want to check in my MFC dialog based application how to check if A + 1 or B + 1 keys are being pressed. I'm using PreTranslateMessage(MSG* pMsg) function to check keys but i don't know what to do for key combination. Thx for help!

Posted 8-Aug-10 6:09am

George Findulov

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ThatsAlok 9-Aug-10 2:32am

you can trap WM_KEYDOWN message!, but it isnot pretty straight forward to trap non system key (ALT,CTRL,SHIFT), without trapping second WM_KEYDOWN message or using GetAsyncKeyState Api!

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Niklas L · Answer 1 · 2010-08-08T07:44:00

Solution 1

Have a look at GetAsyncKeyState[^] or GetKeyState[^]

The combination is never stored in your MSG struct. So if the above doesn't cut it for you, you will have to look for two messages, one for A and one for 1.

Posted 8-Aug-10 7:44am

Niklas L