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I have a tree control inside a CExtControlBar. Although I have defined the handler for the OnContextMenu for the tree control, this method is notified only on a right button double click, not on single click.

I can receive the OnNMRclick notification though.

Any solution to this?

Thanks,

Adrian

We suggest you to declare a CTreeCtrl-derived class and implement the NM_RCLICK and WM_CONTEXTMENU handlers in it like as follows:

HTREEITEM m_hCurrentItem; // CMyTree member variable
 
void CMyTree::OnRclick(NMHDR* pNMHDR, LRESULT* pResult) 
{
      UINT nFlags;
      CPoint curPoint;
      GetCursorPos(&curPoint);
      ScreenToClient(&curPoint);
      HTREEITEM hCurrentItem = HitTest(curPoint, &nFlags);
      if(hCurrentItem != NULL)
      {
            if( SelectItem(hCurrentItem) )
                  m_hCurrentItem = hCurrentItem;
            // Send WM_CONTEXTMENU to self
            SendMessage(WM_CONTEXTMENU, 
             (WPARAM) m_hWnd, GetMessagePos());
      }
      *pResult = 1;
}
 
void CMyTree::OnContextMenu(CWnd* pWnd, CPoint point) 
{
      if( !m_hCurrentItem ) 
            return;
 
      CPoint posMouse, menuCoord;
      VERIFY( GetCursorPos(&posMouse) );
      ScreenToClient(&posMouse);
 
      UINT uFlags;
      HTREEITEM hItem = HitTest(posMouse, &uFlags);
 
      if ( (hItem != NULL) 
        && (TVHT_ONITEM & uFlags) 
        && (hItem == m_hCurrentItem) 
     )
            VERIFY( GetCursorPos(&menuCoord) );
      else
      {
            RECT r;
            if( !GetItemRect(m_hCurrentItem, &r, TRUE) )
                  return;
            menuCoord = CPoint(r.left, r.bottom);
            ClientToScreen(&menuCoord);
      }
 
      CExtPopupMenuWnd * pPopupWnd = new CExtPopupMenuWnd;
      VERIFY(
            pPopupWnd->LoadMenu(
            m_hWnd,
            IDR_POPUP_ON_TREE
            )
            );
      VERIFY(
            pPopupWnd->TrackPopupMenu(
            TPMX_LEFTALIGN,
            menuCoord.x, 
            menuCoord.y)
            );    
}

Yes, this is what I did in my code too but I was wondering why the method OnContextMenu wasn’t called directly for single clicks, and I thought this had something to do with the control bar parent of the tree control.

But this works too - thanks.

Adrian

The WM_CONTEXTMENU message is typically generated when the user uses SHIFT+F10 or the VK_APPS key (Applications key on the Natural keyboard).