C++ TIM或者QQ 自动发送消息

#include "stdafx.h"
#include <thread>
#include <Windows.h>
void Send()
{

        HWND WIN = FindWindowA(NULL,"TIM的聊天对象的名字");        
        keybd_event(VK_LBUTTON, 0, 0, 0);//激活TIM
        PostMessageA(WIN, WM_KEYUP, 65, 0);//发送字符
        //下面是发送回车
        PostMessageA(WIN, WM_KEYDOWN, 13, 0);
        PostMessageA(WIN, WM_KEYUP, 13, 0);
        keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
    
 }
int main()
{
    using namespace::std;
      
    
    while (true)
    {
        Sleep(50);//50毫秒输出一次
        thread t(Send);
        t.join();
        
    }

    system("pause");
    return 0;
}