I have a ComboBox that I wrote a KeyPress event for. Basically, it looks to
make sure that a numeric key has been pressed; if not, then it does a Beep()
and sets e.Handled to True. This should, as I understand it, cause the
character to 'go away' and not be displayed in the box. I have tried this
on a plain old TextBox and it functions as it should. However, with a
ComboBox the character stays in the box! The code (via the debugger) works
fine - if I enter an 'a', it detects it is not a numeric, sets e.Handled =
TRUE, then exits the subroutine. But no matter what I do, the non-numeric
'a' (or whatever character) displays and stays in the combobox.
Anyone explain this? And is there a workaround? Thanks.
Tom 4 7563
Hi Tom,
It's a bit klugy, but this, inside the keypress event, will work:
If e.KeyChar = "a" Then
SendKeys.Send(" {BACKSPACE}")
End If
HTH,
Bernie Yaeger
"Tom" <to*@nospam.com > wrote in message
news:uv******** ******@TK2MSFTN GP12.phx.gbl... I have a ComboBox that I wrote a KeyPress event for. Basically, it looks
to make sure that a numeric key has been pressed; if not, then it does a
Beep() and sets e.Handled to True. This should, as I understand it, cause the character to 'go away' and not be displayed in the box. I have tried this on a plain old TextBox and it functions as it should. However, with a ComboBox the character stays in the box! The code (via the debugger)
works fine - if I enter an 'a', it detects it is not a numeric, sets e.Handled
= TRUE, then exits the subroutine. But no matter what I do, the non-numeric 'a' (or whatever character) displays and stays in the combobox.
Anyone explain this? And is there a workaround? Thanks.
Tom
Hi Tom,
Does your ComboBox's KeyPress handler actually work?
I plonked a ComboBox on a Form and added handlers for KeyDown and
KeyPress. I put a breakpoint in each one and ran the program.
Neither of them stopped at the breakpoint.
Regards,
Fergus
Hi Fergus,
Mine worked fine - see my code above (even a 'messagebox.sho w' responded as
you would expect).
Bernie
"Fergus Cooney" <fi*****@post.c om> wrote in message
news:uX******** ******@TK2MSFTN GP12.phx.gbl... Hi Tom,
Does your ComboBox's KeyPress handler actually work?
I plonked a ComboBox on a Form and added handlers for KeyDown and KeyPress. I put a breakpoint in each one and ran the program.
Neither of them stopped at the breakpoint.
Regards, Fergus
Hi Tom, Bernie,
I had been experimenting with Release and Debug and was still compiled
Release versions. Lol. There ain't no breakpoints in a Release! ;-)
Unfortunately I discovered a problem with the SendKeys method. This is
what I used:
If e.KeyChar <= "0"c Or e.KeyChar >= "9"c Then
If e.KeyChar <> Chr(8) Then
SendKeys.Send ("{BACKSPACE }")
End If
End If
The inner If is to stop it sending BackSpace forever (as I found out!).
But when I typed Ctrl-C into the editbox, all hell broke loose, but I don't
know why.
Tom, have you had any joy yet?
Regards,
Fergus This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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