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Press three keys together and trigger a function

Posted on 2016-10-12
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Last Modified: 2016-10-12
Hello,

I want to combine three keys together CTRL + ALT + F12 and shoot a message with ShowMessage('OK')

how can I do this in my form?

Thanks
Alex
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Question by:hidrau
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LVL 23

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by:
Ferruccio Accalai earned 250 total points
ID: 41840137
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
If (key = vk_F12) and (ssCtrl in Shift) and (ssAlt in Shift) then ShowMessage('OK');
end;

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Assisted Solution

by:Geert Gruwez
Geert Gruwez earned 250 total points
ID: 41840678
that's assuming keypreview is true on your form ...

and some other app has not registered this shortcut key with windows RegisterHotKey
otherwise your app will not get the key

here is such an approach
http://www.delphitips.net/2007/04/01/global-system-hotkey/
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Author Closing Comment

by:hidrau
ID: 41840768
thanks a lot
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