MFC List Control: How to use a context menu in a list control?

Q: How to use a context menu in a list control?

A:

• Create a menu in the resource editor.
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• Derive your own class from CListBox and insert the WM_CONTEXTMENU handler in the class.
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• Insert the following code in your 'OnContextMenu()' function:
  
  
  Code:

  ---

  void CMyListBoxCtl::OnContextMenu(CWnd*, CPoint point)
{
  if((point.x == -1) && (point.y == -1))
  {
    // Keystroke invocation
    CRect rect;

    GetClientRect(rect);
    ClientToScreen(rect);

    point = rect.TopLeft();
    point.Offset(5, 5);
  }

  CMenu menu;
  VERIFY(menu.LoadMenu(MY_CREATED_MENU));

  CMenu* pPopup = menu.GetSubMenu(0);
  ASSERT(pPopup != NULL);
  CWnd* pWndPopupOwner = this;

  while(pWndPopupOwner->GetStyle() & WS_CHILD)
    pWndPopupOwner = pWndPopupOwner->GetParent();

  pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON,
                            point.x,
                            point.y,
                            pWndPopupOwner);
}

  ---

  <br>
• Create a member variable from your List Control and change the class name with your derived class.

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