trapping a right click of a column header

Here's the 911:
I need to trap the right click of a columnheader in a control that inherits from Listview. I realize this means overriding the WndProc method and trapping the WM_Notify, which in turn needs to be converted to a NMHDR structure. However, i am having problems with this not returning the right code. Does anyone have any idea how to do it or can at least point me in the right direction. I am currently using Visual Studio 2003 running on Windows XP pro.

i answered your ? on dotnetforums.net , but here ya go.
i spent an hour or so putting this together...

VB Code:

Imports System.Runtime.InteropServices
'/// top of form's code window^^^
 
    Private WithEvents listviewSubclass As SubclassWindow
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        listviewSubclass = New SubclassWindow()
        listviewSubclass.IsSubClassed = True
        listviewSubclass.AddControl(ListView1)
    End Sub
 
    Private Sub listviewSubclass_MyBaseProc(ByVal m As Message) Handles listviewSubclass.MyBaseProc
        If m.Msg = _Win32.WM_NOTIFY Then
            '/// now we create / fill our structure using Marshal.PtrToStructure...
            Dim nh As NMHDR = Marshal.PtrToStructure(m.LParam, GetType(NMHDR))
            If nh.code = _Win32.NM_RCLICK Then
                MessageBox.Show("Right button Clicked ColumnHeader")
            End If
        End If
 
    End Sub
 
'/// after your End Class of form...
 
Public Class SubclassWindow
    Inherits System.Windows.Forms.NativeWindow
    Public Event MyBaseProc(ByVal m As Message)
 
    Public IsSubClassed As Boolean = False
 
    Public Sub AddControl(ByVal ctrl As Control)
        MyBase.AssignHandle(ctrl.Handle)
    End Sub
 
    Protected Overrides Sub WndProc(ByRef m As Message)
        If IsSubClassed Then
            RaiseEvent MyBaseProc(m)
        End If
 
        MyBase.WndProc(m)
    End Sub
 
    Public Overrides Sub ReleaseHandle()
        MyBase.ReleaseHandle()
    End Sub
 
End Class
Public Enum _Win32 As Integer
    WM_NOTIFY = &H4E
    NM_RCLICK = -5
End Enum
 
<StructLayout(LayoutKind.Sequential)> _
Public Structure NMHDR
    Public hwndFrom As Integer
    Public idfrom As Integer
    Public code As Integer
End Structure

hope it helps :)

911? Don't you mean 411? Or do you want the police or emergency services to answer your post? ;) :D