Work on Ctrl +C in PropertyGridSelectedItem

[VB 8 0]

i am having a control on a panel and their properties in the propertygrid . How to identify the Ctrl + C in this method

Public Function PreFilterMessage(ByRef msg As Message) As Boolean Implements IMessageFilter.PreFilterMessage

 Const WM\_KEYDOWN As Integer = 256
    If msg.Msg = WM\_KEYDOWN Then
        Dim keyCode As Keys = (CType(CType(msg.WParam, Integer), Keys) And Keys.KeyCode)
        If pg.SelectedGridItem.PropertyDescriptor IsNot Nothing Then
            If (pg.SelectedGridItem.PropertyDescriptor.DisplayName = "Picture" Or \_
                        pg.SelectedGridItem.PropertyDescriptor.DisplayName = "BackgroundPicture" \_
                            And Not keyCode = Keys.Delete And Not (keyCode = Keys.Control And keyCode = Keys.C) \_
                            And Not (keyCode = Keys.Control And keyCode = Keys.V) \_
                            And Not (keyCode = Keys.Control And keyCode = Keys.X) \_
                            And Not (keyCode = Keys.Control And keyCode = Keys.A) \_
                            And Not (keyCode = Keys.Control And keyCode = Keys.Z) \_
                            And Not (keyCode = Keys.Control And keyCode = Keys.Y)) Then
                Return True
            End If
        End If
    End If
    Return False
End Function

what i am doing is i am blocking keyboard characters and only Delete button i am allowing in the propertygrid for picture Property . When Ctrl C , or ctrl v or ctrl x or ctrl y or ctrl z is pressed i have to work on the control to copy ,paste etc if the the propertygrid.selecteditem is picture also how can i achieve this one ??