I need to cancel/abort the Keydown event on a textbox

10-13-2004, 04:31 AM

Stuey

Regular

Join Date: Jan 2004

Posts: 67

I need to cancel/abort the Keydown event on a textbox

I need to evaluate the keycode the user has entered (this is the easy part) and then let the procedure either proceed OR concel the event so that the keypress doesn't end up in the textbox.

I seem to remember a 'cancel event' type command in Access Basic but can't find the equivelant in VB.

Failing that do you have any tips on input masks 'cause I don't seem to be able to make the MSMask control work (I get an error when I try to place a total into one of them).

Thank you for your time.

Stuey

10-13-2004, 12:14 PM

quarque

Junior Contributor

Join Date: Sep 2004

Location: Seattle

Posts: 211

perhaps try setting the keycode to 0 which won't go into the textbox(?)

10-13-2004, 01:00 PM

Rashka

Contributor

Join Date: May 2004

Location: Ohio, USA

Posts: 771

Could you please explain a little more?
By masks, do you mean having *** in the textbox instead of abc?
Is the textbox only supposed to accept numbers, or a specific range of letters?

Without my crystal ball, I can only guess at what you are looking for.

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10-13-2004, 02:59 PM

Agent707

Retired Contributor

Join Date: Mar 2002

Posts: 1,829

Like quarque said...

Code:

Private Sub Text1_KeyPress(KeyAscii As Integer)
Select Case KeyAscii
    Case w,x,y,z  'Where w,x,y,z are any Ascii numbers you do not want to be entered.
        KeyAscii = 0
End Select
End Sub

Edit: Actually, better to use the KeyAscii numbers...

Last edited by Agent707; 10-13-2004 at 03:09 PM.

10-13-2004, 03:00 PM

Halor

Newcomer

Join Date: Oct 2004

Posts: 12

I think he is wanting some sort of authentication such as a password or seriel code, you could do it with a text box and a button, the code below is a simple password code that could technically be used for seriel codes also.

Code:

Private Sub cmdCode_Click()
If txtCode.Text = "code1" Or "code2" Or "code3" Then 'I think OR would work if you have multiple codes, not sure though, i am a tad of a nub
MsgBox "Correct Code", 8, "Message Box" 'If they put in one of the correct codes, it displays this
Form1.cmdStart.Enabled = True 'Do something, in my program I had it activate the start and stop button in form1
Form1.cmdStop.Enabled = True 'ditto
Else
MsgBox "Wrong Code", 8, "Message Box" 'Wrong code punk <.<
End If
Form4.Hide 'Hides the password/authentication form (mine being form4) after they put in a right or wrong code
End Sub

I'm probably wrong though, so ignore me..

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Last edited by Halor; 10-13-2004 at 03:05 PM.