Need KeyPreview on userControl

[Ludovic Lemarinel]

Hi,

I need to use Keypreview on my Usercontrol, in order to use KeyDown Event.

This property works great on Forms, but is not implemented in UserControls
??

Is there a way to use it anyway ?

Thanks.

[Witold Jaworski]

Override the protected ProcessKeyPreview function,
if your control is hosted by .NET Forms or OLE Container.
If not, you can also override the protected ProcessCmdKey
function - it is called before ProcessKeyPreview, for most
keystrokes.

Witold

>.
>

[Ludovic Lemarinel]

Thanks for your answer.
As I'm new to VB.NET, I don't even know how to do what you are telling me ;)

could you provide a litlle example please ?

Thanks a lot...

"Witold Jaworski" <witold....@tadmar.com.pl> a écrit dans le message de
news: 001e01c31ee2$4112a910$a301...@phx.gbl...

[Witold Jaworski]

'An User Control, which overrides the protected function
'to catch the keyboard messages (events):

Public Class UserControl1
Inherits System.Windows.Forms.UserControl
Private Const WM_KEYDOWN = &H100

#Region " Windows Form Designer generated code "
...
#End Region

Protected Overrides Function ProcessKeyPreview(ByRef m
As System.Windows.Forms.Message) As Boolean
Dim Processed As Boolean = False 'Set to true, if
we have "consumed" this keystroke
Select Case m.Msg 'This Select can be longer -
it's an example
Case WM_KEYDOWN
Select Case m.WParam.ToInt32 'WParam it is
a virtual key code, in this case
Case Keys.Escape 'An Escape key?
'Do something here
Processed = True
Case Keys.Down 'A Down Arrow?
'Do something here
Processed = True
'Case ...
End Select
End Select
If Not Processed Then Processed =
MyBase.ProcessKeyPreview(m) 'When we did nothing -
delegate to base class
ProcessKeyPreview = Processed
End Function
End Class

Witold

>.
>

[Ludovic Lemarinel]

thanks A LOT !!!

It works, and it helped a lot !!!!

"Witold Jaworski" <witold....@tadmar.com.pl> a écrit dans le message de

news: 002d01c31eeb$898d42f0$a401...@phx.gbl...