MFC 树形控件 实现选择分组下面成员全选

树形控件点击分组全选，取消一个，分组选择变暗
1.添加树形控件
给树形控件添加成员变量CTreeCtrl	m_TripleTree;
2.在头文件中添加变量
HTREEITEM m_hTreeItem;
3.再头文件中定义
CImageList m_imList;
4.在初始化中添加
BOOL CTreeDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

// TODO: Add extra initialization here

	HICON hIcon[3];                             //图标
	m_imList.Create(16,16,0,3,3);               //
	hIcon[0]=AfxGetApp()->LoadIcon(IDI_ICON1);  //加载图标
	hIcon[1]=AfxGetApp()->LoadIcon(IDI_ICON2);
	hIcon[2]=AfxGetApp()->LoadIcon(IDI_ICON3);


	for(int n=0;n<3;n++)
		m_imList.Add(hIcon[n]);
	    m_TripleTree.SetImageList(&m_imList,TVSIL_NORMAL);
	
	TV_INSERTSTRUCT tvinsert;
	tvinsert.hParent=NULL;
	tvinsert.hInsertAfter=TVI_LAST;
	tvinsert.item.mask=TVIF_IMAGE|TVIF_SELECTEDIMAGE|TVIF_TEXT;
	tvinsert.item.hItem=NULL;
	tvinsert.item.state=0;
	tvinsert.item.stateMask=0;
	tvinsert.item.cchTextMax=6;
	tvinsert.item.iSelectedImage=0;
	tvinsert.item.cChildren=0;
	tvinsert.item.lParam=0;
	
	tvinsert.item.pszText="未分组";   // 树根
	tvinsert.item.iImage=0;
	HTREEITEM hCObject=m_TripleTree.InsertItem(&tvinsert);
	
	//second level
	tvinsert.hParent=hCObject;//hCObject
	tvinsert.item.iImage=0;
	tvinsert.item.pszText="张三";
	m_TripleTree.InsertItem(&tvinsert);
	//HTREEITEM hCCmdTarget=m_TripleTree.InsertItem(&tvinsert);
	tvinsert.hParent=hCObject;//hCObject
	tvinsert.item.iImage=0;
	tvinsert.item.pszText="张三";
	m_TripleTree.InsertItem(&tvinsert);
	tvinsert.hParent=hCObject;//hCObject
	tvinsert.item.iImage=0;
	tvinsert.item.pszText="张三";
	m_TripleTree.InsertItem(&tvinsert);

	tvinsert.hParent=hCObject;//hCObject
    tvinsert.item.pszText="朋友";
	tvinsert.item.iImage=0;
    m_TripleTree.InsertItem(&tvinsert);  

	tvinsert.hParent=hCObject;//hCObject
	tvinsert.item.iImage=0;
    tvinsert.item.pszText="好友";
	m_TripleTree.InsertItem(&tvinsert);
	
	tvinsert.item.pszText="同学";
	tvinsert.item.iImage=0;
	m_TripleTree.InsertItem(&tvinsert);	
	/////////////////////////////////////////////////////////////////////////////////////////
    tvinsert.hParent=NULL;
	tvinsert.item.pszText="未分组2";   // 树根
	tvinsert.item.iImage=0;
	HTREEITEM hCObject2=m_TripleTree.InsertItem(&tvinsert);
	
	//second level
	tvinsert.hParent=hCObject2;//hCObject
	tvinsert.item.iImage=0;
	tvinsert.item.pszText="张三";
	m_TripleTree.InsertItem(&tvinsert);

	tvinsert.hParent=hCObject2;//hCObject
	tvinsert.item.iImage=0;
	tvinsert.item.pszText="王五";
	m_TripleTree.InsertItem(&tvinsert);
///////////////////////////

5.导入相应ICO图片（3个）
6.给树形控件添加单击事件，并添加如下代码：
如：
void CTreeDlg::OnClickTree1(NMHDR* pNMHDR, LRESULT* pResult) 
{
	// TODO: Add your control notification handler code here
	 UINT uFlags=0;
	HTREEITEM hPItem;
	CPoint point = GetCurrentMessage()->pt;
	ScreenToClient(&point);
	point.Offset(-8,-16);
	HTREEITEM hItem = m_TripleTree.HitTest(point, &uFlags);
	if ( (uFlags&TVHT_ONITEM) )
	{
		hPItem = m_TripleTree.GetParentItem(hItem);
		int m,n,m1,n1;
	    m_TripleTree.GetItemImage(hItem,m,n);
        if(m!=1)
		{
		  m_TripleTree.SetItemImage(hItem,1,1);
	      m_TripleTree.GetItemImage(hItem,m1,n1);
		  TravelChild(hItem, m1);
		  if(hPItem!=NULL)
	       TravelSiblingAndParent(hItem,m1);
		}
	     else //if(m==1)
		 {
			m_TripleTree.SetItemImage(hItem,0,0);
		    m_TripleTree.GetItemImage(hItem,m1,n1);
    	  TravelChild(hItem, m1);
		  if(hPItem!=NULL)
			TravelSiblingAndParent(hItem,m1);
		 }
			//	MessageBox("xxxx");
	}
	

	
	*pResult = 0;
}
7.添加TravelChild(HTREEITEM hItem, int m)成员函数
如：

void CTreeDlg::TravelChild(HTREEITEM hItem, int m)
{
	HTREEITEM hChildItem,hBrotherItem;
	hChildItem=m_TripleTree.GetChildItem(hItem);

	while(hChildItem!=NULL)
	{
		 m_TripleTree.SetItemImage(hChildItem,m,m);
	     hChildItem=m_TripleTree.GetNextSiblingItem(hChildItem);
	}

}
8.添加TravelSiblingAndParent(HTREEITEM hItem, int m)成员函数
如：
void CTreeDlg::TravelSiblingAndParent(HTREEITEM hItem, int m)
{
	int m1,n1;
	int mark=0;
	HTREEITEM hNextSiblingItem,hPrevSiblingItem,hParentItem;
	m1=m;

	hNextSiblingItem=m_TripleTree.GetNextSiblingItem(hItem);//第一个
	while(hNextSiblingItem!=NULL)
	{
		m_TripleTree.GetItemImage(hNextSiblingItem,m1,n1);
		if(m1!=m)
		{
			mark=1;
			break;
		}
		else
		{
			hNextSiblingItem=m_TripleTree.GetNextSiblingItem(hNextSiblingItem);
			if(hNextSiblingItem!=NULL)
				m_TripleTree.GetItemImage(hNextSiblingItem,m1,n1);
		}
	}
	
	hPrevSiblingItem=m_TripleTree.GetPrevSiblingItem(hItem);//第一个
	
	while(hPrevSiblingItem!=NULL)
	{
		m_TripleTree.GetItemImage(hPrevSiblingItem,m1,n1);
		if(m1!=m)
		{
			mark=1;
			break;
		}
		else
		{
			hPrevSiblingItem=m_TripleTree.GetPrevSiblingItem(hPrevSiblingItem);
			if(hPrevSiblingItem!=NULL)
				m_TripleTree.GetItemImage(hPrevSiblingItem,m1,n1);
		}
	}



	
	if(m1!=m )  //有一个未被选中,j吧父节点去了
	{
		
		hParentItem=m_TripleTree.GetParentItem(hItem);
		while(hParentItem!=NULL)
		{
			m_TripleTree.SetItemImage(hParentItem,2,2);//
			hParentItem=m_TripleTree.GetParentItem(hParentItem);
		}
	}
		
	if(m1==m&& mark==0)//权被选中
	{
		hParentItem=m_TripleTree.GetParentItem(hItem);
		while(hParentItem!=NULL)
		{
			m_TripleTree.SetItemImage(hParentItem,m1,m1);
			hParentItem=m_TripleTree.GetParentItem(hParentItem);
		}
		
	}

}
运行：