在CTreeCtrl中捕獲複選框選中消息,父子節點選中狀態聯動

void CMyDlg::OnClickTree1(NMHDR* pNMHDR, LRESULT* pResult)   
{  
// TODO: Add your control notification handler code here  
NM_TREEVIEW* pHdr = (NM_TREEVIEW*)pNMHDR;  
*pResult = 0;  
  
CPoint point;  
UINT uFlag;  
GetCursorPos(&point);  
ScreenToClient(&point);  
  
HTREEITEM item = m_ctrlTree.HitTest(point, &uFlag);  
if((item) && (TVHT_ONITEMSTATEICON & uFlag))     
{     
BOOL bCheck = m_ctrlTree.GetCheck(item);  
SetItemCheckState(item, !bCheck);}     
}  
  
/************************************************************************/  
/* 根據選擇的節點選中狀態，設置相關節點的選中狀態                   */  
/************************************************************************/  
void CHistoryDlg::SetItemCheckState(HTREEITEM item, BOOL bCheck)  
{  
SetChildCheck(item, bCheck);  
SetParentCheck(item, bCheck);  
}  
  
/************************************************************************/  
/* 設置子節點的選中狀態                                              */  
/************************************************************************/  
void CHistoryDlg::SetChildCheck(HTREEITEM item, BOOL bCheck)  
{  
HTREEITEM child = m_ctrlTree.GetChildItem(item);  
while(child)  
{  
m_ctrlTree.SetCheck(child, bCheck);  
SetChildCheck(child, bCheck);  
child = m_ctrlTree.GetNextItem(child, TVGN_NEXT);  
}  
}  
  
/************************************************************************/  
/* 設置父節點選中狀態                                                 */  
/************************************************************************/  
void CHistoryDlg::SetParentCheck(HTREEITEM item, BOOL bCheck)  
{  
HTREEITEM parent = m_ctrlTree.GetParentItem(item);  
if(parent == NULL)  
return;  
  
if(bCheck)  
m_ctrlTree.SetCheck(parent, bCheck);  
else  
{  
HTREEITEM bro = m_ctrlTree.GetNextItem(item, TVGN_NEXT);  
BOOL bFlag = false;  
while(bro)  
{  
if(m_ctrlTree.GetCheck(bro))  
{  
bFlag = true;  
break;  
}  
bro = m_ctrlTree.GetNextItem(bro, TVGN_NEXT);  
}  
if(!bFlag)  
{  
bro = m_ctrlTree.GetNextItem(item, TVGN_PREVIOUS);  
while(bro)  
{  
if(m_ctrlTree.GetCheck(bro))  
{  
bFlag = true;  
break;  
}  
bro = m_ctrlTree.GetNextItem(bro, TVGN_PREVIOUS);  
}  
}  
if(!bFlag)  
m_ctrlTree.SetCheck(parent, false);  
}  
  
SetParentCheck(parent, GetCheck(parent));  

必須CTreeCtrl控件添加NM_CLICK消息響應函數OnClickTree1();