TreeControl子节点checkbox跟随父节点checkbox状态发生改变

方法一：
void CTreeTest_demoDlg::ChangeTreeItemAll(CTreeCtrl &tree, HTREEITEM hItem,BOOL bSelect) 

{ 

HTREEITEM x = tree.GetChildItem(hItem); 

if(NULL == x) return; 

do

{ 

tree.SetCheck( x, bSelect ); 

ChangeTreeItemAll(tree,x,bSelect);

}

while( ( x = tree.GetNextSiblingItem( x ) )!= NULL ); 

}

 void CTreeTest_demoDlg::OnNMClickTree(NMHDR *pNMHDR, LRESULT *pResult)

 {

  // TODO: 在此添加控件通知处理程序代码

 

  CPoint point; 

  UINT pflags; 

  GetCursorPos(&point); 

  m_ctrTree.ScreenToClient(&point); 

  HTREEITEM hitItem = m_ctrTree.HitTest( point, &pflags );

  if ( pflags & (TVHT_ONITEMSTATEICON )) 

  { 

 

  //if(m_bSelectDirect) // 选中父结点时他的直接孩子(儿子)结点同时被选中 

  //{ 

  // if ( m_ctrTree.GetCheck( hitItem ) )

  // { 

  // ChangeTreeItemDirect(m_ctrTree,hitItem,FALSE); 

  // }

  // else 

  // { 

  // ChangeTreeItemDirect(m_ctrTree,hitItem,TRUE); 

  // }

  //} 

//   if(m_bSelectAll) // 选中父结点时他的孩子结点以及所有后代(孙子)的节点被选中 

    { 

    if ( m_ctrTree.GetCheck( hitItem ) ) 

    { 

    ChangeTreeItemAll(m_ctrTree,hitItem,FALSE); 

    } 

    else 

    {

    ChangeTreeItemAll(m_ctrTree,hitItem,TRUE); 

    } 

    }

  } 

  *pResult = 0;

 }


方法二：

void CTreeTest_demoDlg::UpdateTreeCheck(const HTREEITEM hParent, const BOOL flag) 

{ 

if (m_ctrTree.ItemHasChildren(hParent)) 

{ 

HTREEITEM hNextItem; 

HTREEITEM hChildItem = m_ctrTree.GetChildItem(hParent); 

while (hChildItem != NULL) 

{ 

//递归获取当前节点下的子节点 

m_ctrTree.SetCheck(hChildItem,flag); 

UpdateTreeCheck(hChildItem,flag); 

hNextItem = m_ctrTree.GetNextItem(hChildItem, TVGN_NEXT);

hChildItem = hNextItem;

} 

} 

} 

void CTreeTest_demoDlg::OnNMClickTree(NMHDR *pNMHDR, LRESULT *pResult)

{

// TODO: 在此添加控件通知处理程序代码

DWORD dw = GetMessagePos();

CPoint pt(LOWORD(dw),HIWORD(dw)); //鼠标的屏幕坐标

CPoint ptClient; 

CRect rcPart;

m_ctrTree.GetWindowRect(rcPart);

ptClient.x = pt.x - rcPart.left;

ptClient.y = pt.y - rcPart.top; 

UINT uFlags;

HTREEITEM hItem = m_ctrTree.HitTest(ptClient, &uFlags); 

if ((hItem != NULL) && (uFlags & TVHT_ONITEMSTATEICON)) 

{ 

if (m_ctrTree.ItemHasChildren(hItem)) 

{ 

BOOL flag = m_ctrTree.GetCheck(hItem); //这时父节点还没有更新，需要取反 

UpdateTreeCheck(hItem,!flag); 

} 

}

m_ctrTree.Select(hItem, TVGN_CARET);

*pResult = 0;

}