MFC Tree Control: How to detect which part of an item the user clicked on?

[Gabriel Fleseriu]

Q: How to detect which part of an item the user clicked on?

A: It does not matter whether we're talking about a left click, a right click or just hoovering with the mouse. IOW, the message you handle is irrelevant - the method of detecting what exactly is under the cursor is the same:

void CYourDialog::OnClickTree(NMHDR* pNMHDR, LRESULT* pResult) 
{
  CPoint    point;
  UINT      uFlags;
  HTREEITEM hItem;

  GetCursorPos(&point);   
  m_tree.ScreenToClient(&point);
  hItem = m_tree.HitTest(point, &uFlags);
  if(hItem)
  {
    // There is an item under the cursor.
    // See what exactly was under the cursor:
    switch(uFlags)
    {
      case TVHT_ONITEMSTATEICON:
        // It was the icon
        break;

      case TVHT_ONITEMBUTTON:
        // It was the button
        break;

      // ...and so on
    }
  }

  *pResult = 0;
}