Win32 sdk 下树形控件响应鼠标单击与双击,获得选中项的名称

//窗口过程函数

INT_PTR CALLBACK myWin::myWinDlgProc(HWND dlgHwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{

    switch (uMsg)
    {
    case WM_COMMAND:
    {
        OnCommand(wParam, lParam);
        return 1;
    }

    case WM_ACTIVATE:
        if (WA_INACTIVE != LOWORD(wParam)) {
            SetFocus(dlgHwnd);
        }
        return TRUE;

    case WM_CLOSE:
        DestroyWindow(dlgHwnd);
        return 1;
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;

    case WM_INITDIALOG:
        win_hWnd = dlgHwnd;
        OnInitDialog();
        return 1;

    case WM_CONTEXTMENU:
        OnContextMenu(wParam);
        return 1;

    case WM_NOTIFY:
        OnNotify(wParam,lParam);//树形控件返射消息
        return 1;
    }
    return 0;
}

BOOL MyAppClass::OnNotify(WPARAM wParam, LPARAM lParam)
{ 
    LPNMHDR lphr = (LPNMHDR)lParam;
    if (lphr->hwndFrom == hTree)　　//判断是否是树形控件发来的消息
    {
    　　

　　　　switch (lphr->code)
　　　　{
　　　　case NM_CLICK:　　//鼠标单击
　　　　OnCloickTree(lphr);
　　　　break;

　　　　case NM_DBLCLK:　　//鼠标双击
　　　　OnRCloickTree(lphr);
　　　　break;
　　　　}

　　 }

    return TRUE;
}

//鼠标双击消息
void MyAppClass::OnRCloickTree(LPNMHDR lphr)
{
	
	HTREEITEM htItem;
	TVITEM tvi;
	htItem = TreeView_GetSelection(hTree);	

	if (htItem == NULL)
		return;
	TCHAR szText[20];
	memset(&tvi, 0, sizeof(tvi));
	tvi.mask = TVIF_TEXT | TVIF_PARAM;
	tvi.hItem = htItem;
	tvi.pszText = szText;
	tvi.cchTextMax = sizeof(szText);
	TreeView_GetItem(hTree, &tvi);

	SetDlgItemText(win_hWnd, IDC_EDIT1, szText);
}

void MyAppClass::OnCloickTree(LPNMHDR param1)
{
    
    TVHITTESTINFO thti;
    HTREEITEM htItem;
    TVITEM tvi;    
    POINT point;

    GetCursorPos(&point);
    ScreenToClient(hTree, &point);
    thti.pt = point;
    thti.flags = TVHT_TORIGHT;
    htItem = TreeView_HitTest(hTree, &thti);

    if (htItem == NULL)
        return;

    TCHAR szText[20];
    memset(&tvi, 0, sizeof(tvi));
    tvi.mask = TVIF_TEXT | TVIF_PARAM;
    tvi.hItem = htItem;
    tvi.pszText = szText;
    tvi.cchTextMax = sizeof(szText);
    TreeView_GetItem(hTree, &tvi);

    SetDlgItemText(win_hWnd, IDC_EDIT1, szText);
    
}