获取鼠标所在窗体的PID

#include <Windows.h>
#include <iostream>
using namespace std;
DWORD GetPIDFromCursor(void)
{
	POINT CursorPos;
	//获取当前鼠标的位置
	if (!GetCursorPos(&CursorPos))
	{
		cout << "GetCursorPos Error: " << GetLastError() << endl;
		return 0;
	}

	//从鼠标位置获取当前窗体的句柄
	HWND hWnd = WindowFromPoint(CursorPos);
	if (NULL == hWnd)
	{
		cout << "No window exists at the given point!" << endl;
		return 0;
	}

	//获取窗体句柄的pid
	DWORD dwProcId;
	GetWindowThreadProcessId(hWnd, &dwProcId);
	return dwProcId;
}
int main()
{
	int pid=GetPIDFromCursor();
	cout<<pid<<endl;
	return 0;
}