Identifying keys that have been pressed.

Posted on 2004-07-31
Last Modified: 2011-10-03
I am creating a music player. And i want to have keys associated with commands. I have 3 problems:
How to read what keys have been pressed.
How to associate key combinations with code
How to read the data when the program is not in focus (like running on the system tray or minimised)

I don't think that the first two problems are that difficult but the last one might be a little more tricky.

Thanks in adavance

Question by:Completenutter2
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LVL 19

Expert Comment

ID: 11684175
The rules of this site do not allow more than one question at a time. As the first two questions are related then hee you go:

'Use the keydown or keyUp events to read the keys that were pressed and to associate them with commands:

Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
Select Case KeyCode
    Case vbKeyA 'a was pressed
        'associate with a command - do your stuff
    Case vbKeyF1 'the F1 key was pressed
        'associate with another command - do the other stuff
    case .....
End Select
End Sub

LVL 19

Expert Comment

ID: 11684190
ps. As per your third question. I suggest your ask it in a separate question, and explaine in more details what data you want to read, from where to to where.


Author Comment

ID: 11684317
OK that sounds like it would work for standard keys but how about non-standard keys like multi media  keys on a keyboard. I've seen it in winamp.

Thanks for the standard key bit :)

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LVL 19

Expert Comment

ID: 11684511
Well, you need to know the combination fo these keys, however, here is an example:

If KeyCode = vbKeyB And (Shift And vbCtrlMask > 0) Then 'either control or shift or alt key were pressed along with the B key.
    'do your stuff
End If

LVL 19

Expert Comment

ID: 11684518
ps. To determine if it is a shift the control or the alt key then if (Shift And vbCtrlMask)=1 (shift) 2 (control) 4 (alt).


Author Comment

ID: 11684527
Would there not be a way to capture the keys pressed? I know that the stop button uses Ctrl + S but the Play/Pause button is read in winamp as Play/Pause and not a key combo.
LVL 19

Accepted Solution

Shauli earned 200 total points
ID: 11684575

Assisted Solution

Barsham earned 50 total points
ID: 11692706
You can use DirectInput Api to Read Key From Where Pressed

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