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Vb.net Hot Key Buttons

Posted on 2007-03-29
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In vb.net I need to create hot keys for my buttons.  More specifically i need CTRL+F1 through CTRL + F12 to have functions.  is this possible and if so how?
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Question by:dprundle
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18818637
Define "hot keys"...

Do you need these to function ONLY when your app is in FOCUS?

...or at anytime, such as when OTHER apps are active?
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Author Comment

by:dprundle
ID: 18818851
only when my app is focused.
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18818881
(assuming WinForms here)

Sorry...one more question...what version VB.Net?

VB.Net 2005?
VB.Net 2003 (or below)?
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Author Comment

by:dprundle
ID: 18818902
visual studio 2005 vb.net
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LVL 86

Accepted Solution

by:
Mike Tomlinson earned 2000 total points
ID: 18819244
One way...

Public Class Form1

    Private Const WM_KEYDOWN As Integer = &H100

    Protected Overrides Function ProcessKeyPreview(ByRef m As System.Windows.Forms.Message) As Boolean
        Select Case m.Msg
            Case WM_KEYDOWN
                If My.Computer.Keyboard.CtrlKeyDown AndAlso (Not My.Computer.Keyboard.AltKeyDown) Then
                    Select Case m.WParam.ToInt32
                        Case Keys.F1
                            Debug.Print("Ctrl F1")
                            Return True

                        Case Keys.F2
                            Debug.Print("Ctrl F2")
                            Return True

                        Case Keys.F3
                            Debug.Print("Ctrl F3")
                            Return True

                        ' etc...

                    End Select
                End If

        End Select
    End Function

End Class
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Author Comment

by:dprundle
ID: 18837540
Where do I put this at?
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18837561
You put this code INSIDE whatever form you want it on:

    Private Const WM_KEYDOWN As Integer = &H100

    Protected Overrides Function ProcessKeyPreview(ByRef m As System.Windows.Forms.Message) As Boolean
        Select Case m.Msg
            Case WM_KEYDOWN
                If My.Computer.Keyboard.CtrlKeyDown AndAlso (Not My.Computer.Keyboard.AltKeyDown) Then
                    Select Case m.WParam.ToInt32
                        Case Keys.F1
                            Debug.Print("Ctrl F1")
                            Return True

                        Case Keys.F2
                            Debug.Print("Ctrl F2")
                            Return True

                        Case Keys.F3
                            Debug.Print("Ctrl F3")
                            Return True

                        ' etc...

                    End Select
                End If

        End Select
    End Function

So it goes INBETWEEN these two lines in the IDE:

    Public Class Form1

    End Class

Where "Form1" is the name of your form...
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Author Comment

by:dprundle
ID: 18838950
Thanks,  I was just wondering if I had to do anything special (like create a new class) to get it to work. I'll try it out now.
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Author Comment

by:dprundle
ID: 18839082
this isn't working.. i even replaced debug.print with msgbox("Im working") and its not doing anything.
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Author Comment

by:dprundle
ID: 18839096
wow i'm an idiot. i didn't have flock on.  Thanks for your help.
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18840241
"flock"?...

Glad you got it working.  =)
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