COleDropTarget::Register failed to register CMfcToolBar pointer

• Question

• 

  

  0

  Sign in to vote

  
  I have a problem that is cmfctoolbar is not registered using COleDropTarget::Register(this). why it is failed to register? Please do favour by giving the rite solution.
  
  And also ON_NOTIFY_REFLECT(TBN_DROPDOWN, OnOzoneDropDown) not working. When I do dropdown on the toolbar button OnOzoneDropDown handler is not getting call. I am using CMFCToolbar.
  
  class COzDropTarget : public COleDropTarget
  {
      public:
      virtual DROPEFFECT OnDragEnter( CWnd* pWnd, COleDataObject* pDataObject, DWORD      dwKeyState, CPoint point) ;
      virtual DROPEFFECT OnDragOver ( CWnd* pWnd, COleDataObject* pDataObject, DWORD dwKeyState, CPoint point );
      virtual void OnDragLeave( CWnd* pWnd );
      virtual BOOL OnDrop ( CWnd* pWnd, COleDataObject* pDataObject, DROPEFFECT dropEffect, CPoint point );
      void SetParentWindow(COZoneBar* pOzBar);
  
      COZoneBar* m_pOzBar;
  };
  class COZoneBar : public CMFCToolBar
  {
      public:
      friend COzDropTarget;
      COzDropTarget m_dropTarget;
  };

  int COZoneBar::CreateBtn()
  {
      if(m_dropTarget.Register(this) == 0)    //registration failed
         AfxMessageBox(_T("Register failed"));  
      m_dropTarget.SetParentWindow(this);
  }

  Thursday, February 5, 2009 1:16 PM