急!各位大哥大姐帮帮忙啊
#include "stdafx.h"
#include<windows.h>
HWND hwnd,hfd;
int main(int argc, char* argv[])
{
hwnd=FindWindow("#32770","自动更新");
hfd=FindWindowEx(hwnd,NULL,"Button","取消");
SendMessage(hfd,BM_CLICK,0,0);
return 0;
}hfd的值为0!为什么啊?我想关掉微软的自动更新对话框!