VC++ CTreeCtrl 中 checkbox 的使用

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1、添加 CTreeCtrl 单击响应事件,设置checkbox 的选中状态

void CTestTreeDlg::OnClickTree1(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here

CPoint    pt;

GetCursorPos(&pt);

m_Tree_ctlDemo.ScreenToClient(&pt);

UINT    nFlag = 0;

HTREEITEM    hItem = m_Tree_ctlDemo.HitTest(pt, &nFlag);

if( NULL != hItem )
{

  m_Tree_ctlDemo.SelectItem(hItem);

}

*pResult = 0;
}

2、遍历获取checkbox 选中的所有子节点

void CTestTreeDlg::OnOK()
{
CString str;

HTREEITEM htm;
HTREEITEM parentHtm;
HTREEITEM childHtm;

htm = m_Tree_ctlDemo.GetSelectedItem();

if (htm == NULL) return;

//获取当前选中节点的父节点
parentHtm = m_Tree_ctlDemo.GetParentItem(htm);
//获取当前选中节点的子节点
childHtm = m_Tree_ctlDemo.GetChildItem(htm);

if(parentHtm == NULL && childHtm != NULL)
{
return;
}

// 遍历所有子节点
if (m_Tree_ctlDemo.ItemHasChildren(parentHtm))
{
HTREEITEM hItem = m_Tree_ctlDemo.GetChildItem(parentHtm);

  if(m_Tree_ctlDemo.GetCheck(hItem)) //判断子节点是否选中
  {
   str += m_Tree_ctlDemo.GetItemText(hItem) + "\r\n";
  }

  while (hItem != NULL)
  {
   m_Tree_ctlDemo.SetItemState(hItem, TVIS_BOLD, TVIS_BOLD);
   hItem = m_Tree_ctlDemo.GetNextSiblingItem(hItem);

   if(hItem != NULL && m_Tree_ctlDemo.GetCheck(hItem))
   {
    str += m_Tree_ctlDemo.GetItemText(hItem) + "\r\n";
   }

}
}

AfxMessageBox(str);

}