Trapping Function Keys

I have a Edit TEdit, used for a bar code scanner.  In the code, after I scan a bar code, I do a TEdit.SetFocus, to keep the cursor on this field so I can scan another bar code label.  This works fine with one exception.  I can't tell it I'm done.  I would like to be able to hit the 'F4' key to say I'm done with scanning, let me move to the next field.  The only problem is that I'm using the 'OnKeyPress' event.  It doesn't recognize function keys.

How do I get the OnKeyPress to accept function keys?
Thanks
gspears060598Asked:
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GreedyConnect With a Mentor Commented:
use the onKeyDown and look for Key = VK_F4
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GreedyCommented:
You might also want to know that the form has a property called KeyPreview.  If you set this to true you can have the Form look at the keyboard events first...might come in handy if you only want to write one event handler.
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