make a button go down

How do I make a button go down when I press a key om the keyboard?
I want to know how to make it seem like the button is pressed.
I know that it is possible to do this with a panel, but it does not seem to have a taborder or so, which I need.
Is et posiple to make a radiogroup transperent?
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jeabpAuthor Commented:
Edited text of question.
jeabpAuthor Commented:
Adjusted points to 30
Paul SinnemaCommented:
PostMessage ( Button.Handle, WM_LBUTTONDOWN, 0, 0 );

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jeabpAuthor Commented:
I have now tried that and it was not that effective. insted i tried : sendmessage(Button1.Handle, WM_LBUTTONDOWN, 0, 0 );
That works ok.

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