key press event

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Jul 20th, 2004, 11:12 PM
Synth3t1c

key press event

when someone pushes f12 an action takes place. how to do it?

Use KeyDown or KeyUp event .

VB Code:

Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
            If e.KeyData = Keys.F12 Then
                MessageBox.Show("You just pressed F12")
            End If
End Sub

Jul 20th, 2004, 11:29 PM
Pirate

Set form's KeyPreview property in the Properties Explorer to True .
Jul 21st, 2004, 12:05 AM
Synth3t1c

not workin
Jul 21st, 2004, 12:09 AM
Synth3t1c

might it be mecause the combo box is selected?
Jul 21st, 2004, 12:10 AM
Pirate

Quote:

Originally posted by Synth3t1c
not workin

What do you mean not working ? Do you mean you want to set up a wide-system hotkey or what ?

It's working here .
Jul 21st, 2004, 12:13 AM
Pirate

Quote:

Originally posted by Synth3t1c
might it be mecause the combo box is selected?

Even if the focus was in another control , it should trigger the event . I've just tested it .

VB Code:

'syn maybe you forgot to put this.
KeyPreview = True

Jul 21st, 2004, 02:31 AM
brown monkey

hello mate. not in combo. i don't know about upper than 2k2 but i don't get the keydown event of the form if the focus is in the combo. :)
Jul 21st, 2004, 04:05 AM
Pirate

Quote:

Originally posted by brown monkey
hello mate. not in combo. i don't know about upper than 2k2 but i don't get the keydown event of the form if the focus is in the combo. :)

Are you sure you set the form's KeyPreview property in the Properties Explorer to True ?
Jul 21st, 2004, 04:16 AM
brown monkey

yep
Jul 21st, 2004, 04:21 AM
Pirate

1 Attachment(s)

Try this . ;)
Jul 21st, 2004, 04:28 AM
brown monkey

yep. it works. but it won't with the dropdownstyle of combobox1 is set to dropdown. works with the dropdownlist style. ;)
Jul 21st, 2004, 06:10 AM
alextyx
Damned B.M. !:p
Once again you are right!:)
I use Vs.Net 2003 but I have the same behaviour.
I have a combo in DropDownStyle and...
VB Code:
```
Private Sub FrmRientri_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
        If MessageBox.Show(Me.CmbNumeroDocRientro.DropDownStyle.ToString & "    " & " I'm in KeyDown. Do you want to change in DropDown", "", MessageBoxButtons.YesNo) = DialogResult.Yes Then
            Me.CmbNumeroDocRientro.DropDownStyle = ComboBoxStyle.DropDown
        End If
    End Sub
```
as you can see my procedure show a message box when keydown event is fired. It remind me that is placed in keydown event and ask me if I want to change the style of combo. After two or three rounds I decided to change the style and..... from that moment my event was not more fired. It seems a bug, isn't it? :confused: