asked on

trapping function keys

Can anyone tell how i can do something when F12 key is pressed. It seems it cannot be trapped in KeyPress event like the other keys using the ASCII code. Please help

ASKER CERTIFIED SOLUTION

HobbitHouse

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Éric Moreau

The KeyPress event is only good for trapping ASCII characters (letters, numbers, punctuation, delete, enter, back, ...)

aikimark

When possible, use the intrinsic constants (keycode in this case) for clearer code.

vbKeyF12 = &h7B = 123

Richie_Simonetti

If yopu need to trap F12 key in entire form, first set Heypreview property of form to true, after that use some like this:
Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
if KeyCode=vbkeyf12 then
Debug.Print KeyCode
end if
End Sub

Monchanger

This might be overkill, but it will capture that key you want. It's actually meant to capture keys outside (as well as inside) your application.

http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=24607&lngWId=1

Since you want to use F12, I guess it wouldn't really hurt other applications.

Richie_Simonetti

Where you read:
"If yopu need to trap F12 key in entire form, first set Heypreview "
it must be:
"If you need to trap F12 key in entire form, first set KeyPreview "
Sorry.

aikimark

Isn't "Heypreview" a lot like Caller-ID? :-)

Richie_Simonetti

:))

ahmed021399

ASKER

Richie your code is just for the active application, right?

Richie_Simonetti

yes, if you need to trap from others:
http://www.freevbcode.com/ShowCode.Asp?ID=1610
and a related one:
http://www.freevbcode.com/ShowCode.Asp?ID=1308