window句柄相关

微软官方工具（查看程序句柄）：

https://docs.microsoft.com/zh-cn/visualstudio/debugger/using-spy-increment?view=vs-2019

从 Visual Studio 启动 Spy++

在“工具”菜单上选择“Spy++” 。

因为 Spy++ 独立运行，所以在启动之后，可以关闭 Visual Studio。

第三方教程：

https://blog.csdn.net/wyplj2015/article/details/107271514/

获取当前鼠标所在窗口的句柄及窗口标题，并发送信息

#include <iostream>
using namespace std;
#include <Windows.h>

void getWindows()
{
Sleep(3000);

POINT pNow = { 0,0 };
if (GetCursorPos(&pNow)) // 获取鼠标当前位置
{
HWND hwndPointNow = NULL;
hwndPointNow = WindowFromPoint(pNow); // 获取鼠标所在窗口的句柄
if (hwndPointNow)
{
cout << "Success!!" << endl;
char szWindowTitle[50];
::GetWindowTextA(hwndPointNow, szWindowTitle, sizeof(szWindowTitle)); // 获取窗口标题
cout << hex << (int)hwndPointNow << endl; // 鼠标所在窗口的句柄
cout << szWindowTitle << endl; // 鼠标所在窗口的标题

//激活窗口

SetForegroundWindow(hwndPointNow);

string Name;
Name = "hello world";
for (int i = 0; i < Name.length(); i++)
{

//发送回车SendMessage如果不行，就换PostMessage

PostMessage(hwndPointNow, WM_KEYDOWN, VK_RETURN, 0);
Sleep(100);
PostMessage(hwndPointNow, WM_KEYUP, VK_RETURN, 0);

SendMessage(hwndPointNow, WM_CHAR, Name.at(i), 1);
//SendMessage(hwndPointNow, WM_KEYDOWN, VK_RETURN, 0);
//SendMessage(hwndPointNow, WM_KEYUP, VK_RETURN, 0);
}
}
else
cout << "Error!!" << endl;
}
else
cout << "Error!!" << endl;
}

int main()
{
std::cout << "Hello World! ";
getWindows();
}