windows api学习笔记-给指定的应用程序发送消息

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#include <windows.h>

#include <iostream>

using namespace std;

 

int main()

{

    //HWND hWnd = ::FindWindow("Notepad",NULL);

    HWND hWnd = ::FindWindow(NULL,"a.txt - 记事本");

    if(hWnd != NULL)

    {

        ::SendMessage(hWnd,WM_CLOSE,0,0);

    }

    char a;

    cin>>a;

    return 0;

}