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Subclassing Assistant ActiveX DLL

April 12, 2007 by Java

Browsing subclass.cls (1.38 KB)

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
END
Attribute VB_Name = "GSubclass"
Attribute VB_GlobalNameSpace = True
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = True
Option Explicit

Sub AttachMessage(iwp As ISubclass, ByVal hwnd As Long, _
                  ByVal iMsg As Long)
Attribute AttachMessage.VB_Description = "Start subclassing for a particular message."
    MSubclass.AttachMessage iwp, hwnd, iMsg
End Sub

Sub DetachMessage(iwp As ISubclass, ByVal hwnd As Long, _
                  ByVal iMsg As Long)
Attribute DetachMessage.VB_Description = "Stop subclassing for a particular message."
    MSubclass.DetachMessage iwp, hwnd, iMsg
End Sub

Public Property Get CurrentMessage() As Long
Attribute CurrentMessage.VB_Description = "Returns the message currently being worked on.  Only valid in the MsgResponse and WindowProc items of your implemented interface."
   CurrentMessage = MSubclass.CurrentMessage
End Property
Public Function CallOldWindowProc( _
      ByVal hwnd As Long, _
      ByVal iMsg As Long, _
      ByVal wParam As Long, _
      ByVal lParam As Long _
   ) As Long
Attribute CallOldWindowProc.VB_Description = "Calls the window procedure for this handle which was installed before you added the subclass."
   CallOldWindowProc = MSubclass.CallOldWindowProc(hwnd, iMsg, wParam, lParam)
End Function

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