跨进程点击treeview节点

最近写VBA程序，点击treeview控件的节点，只能用windows的api函数mouse_event，但是window系统锁屏的时候，mouse_event函数会被屏蔽，在网上找了半天，找到代码注入的方法，但在VBA里createremotethread时候，被注入的进程会崩溃，具体原因不太清楚。 最后用C++试了下WM_LBUTTONDBLCLK，竟然有作用，而同样的代码在VBA无效....，下面是C++代码，测试有效

#include "stdafx.h"
#include  "windows.h" 
int _tmain(int argc, _TCHAR* argv[])
{
HWND hTree =(HWND)_ttoi(argv[1]);
::SetForegroundWindow(hTree);
::SetFocus(hTree);
    POINT pt={0};
    pt.x = _ttoi(argv[2]);
    pt.y = _ttoi(argv[3]);


::ClientToScreen(hTree,&pt);

::SetCursorPos(pt.x,pt.y);
::Sleep(500);
::PostMessage(hTree,WM_LBUTTONDOWN,MK_LBUTTON,MAKELPARAM((WORD)pt.x,(WORD)pt.y));
::PostMessage(hTree,WM_LBUTTONUP,MK_LBUTTON,MAKELPARAM((WORD)pt.x,(WORD)pt.y));
::PostMessage(hTree,WM_LBUTTONDBLCLK,MK_LBUTTON,MAKELPARAM((WORD)pt.x,(WORD)pt.y));


}