這段程式碼測試程式，實現功能動態獲取視窗大小，獲取滑鼠按鍵訊息，獲取滑鼠所在視窗的位置，大小，視窗控制代碼
實現原理：

GetCursorPos(&pNow) // 獲取滑鼠當前位置

hwndPointNow = WindowFromPoint(pNow);  // 獲取滑鼠所在視窗的控制代碼

::GetWindowThreadProcessId(hwndPointNow, &dwProcessID);//獲取視窗PID

GetWindowRect(hwndPointNow, &rect);//獲取視窗位置

#define KEY_DOWN(VK_NONAME) ((GetAsyncKeyState(VK_NONAME) & 0x8000) ? 1:0) 獲取鍵值
 

/************************************************************************************
* filename : main.cpp
* comment : The left mouse button, right pulley, message capture, access to the mouse window handle, window position.
* author : liangqidong <[email protected]>
* History : create by liangqidong @ 2017/09/18
*************************************************************************************/
#include <windows.h>
#include <tlhelp32.h>    //CreateToolhelp32Snapshot
#include <string>
#include <iostream>
using namespace std;

#define KEY_DOWN(VK_NONAME) ((GetAsyncKeyState(VK_NONAME) & 0x8000) ? 1:0) //必要的，我是背下來的   

HWND GetWindowHandleByPID(DWORD dwProcessID)
{
	HWND h = GetTopWindow(0);
	while (h)
	{
		DWORD pid = 0;
		DWORD dwTheardId = GetWindowThreadProcessId(h, &pid);
		if (dwTheardId != 0)
		{
			if (pid == dwProcessID/*your process id*/)
			{
				// here h is the handle to the window  

				if (GetTopWindow(h))
				{
					return h;
				}
				// return h;   
			}
		}
		h = ::GetNextWindow(h, GW_HWNDNEXT);
	}
	return NULL;
}
int main()
{
	HWND hwndNow = GetWindowHandleByPID(13956);
	while (1)
	{
		POINT pNow = { 0, 0 };
		if (GetCursorPos(&pNow))  // 獲取滑鼠當前位置
		{
			HWND hwndPointNow = NULL;
			DWORD  dwProcessID = 0;
			RECT rect;
			hwndPointNow = WindowFromPoint(pNow);  // 獲取滑鼠所在視窗的控制代碼
			::GetWindowThreadProcessId(hwndPointNow, &dwProcessID);
			
			if (13956 == dwProcessID)
			{ 
				GetWindowRect(hwndPointNow, &rect);
				std::cout << "視窗的控制代碼:" << (int)hwndNow<< std::endl;  // 滑鼠所在視窗的控制代碼
				std::cout << "滑鼠所在視窗的控制代碼:" << (int)hwndPointNow << "ID:" << dwProcessID << std::endl;  // 滑鼠所在視窗的控制代碼
				std::cout << "滑鼠所在視窗的top:" << rect.top << std::endl;  // 滑鼠所在視窗的控制代碼
				std::cout << "滑鼠所在視窗的bottom:" << rect.bottom << std::endl;  // 滑鼠所在視窗的控制代碼
				std::cout << "滑鼠所在視窗的left:" << rect.left << std::endl;  // 滑鼠所在視窗的控制代碼
				std::cout << "滑鼠所在視窗的right:" << rect.right << std::endl;  // 滑鼠所在視窗的控制代碼
				std::cout << "滑鼠所在視窗的寬:" << rect.right - rect.left << std::endl;  // 滑鼠所在視窗的控制代碼
				std::cout << "滑鼠所在視窗的高:" << rect.bottom - rect.top << std::endl;  // 滑鼠所在視窗的控制代碼
				printf("滑鼠左鍵是否按下：");
				if (KEY_DOWN(MOUSE_MOVED))printf("是");
				else printf("否");
				printf("\n");

				printf("滑鼠右鍵是否按下：");
				if (KEY_DOWN(MOUSE_EVENT))printf("是");
				else printf("否");
				printf("\n");

				printf("滑鼠滾輪鍵是否按下：");
				if (KEY_DOWN(MOUSE_WHEELED))printf("是");
				else printf("否");
				printf("\n");
			}
			Sleep(1000);
			system("cls");//清屏   
		
		}
	}
	return 0;
}
 

具體程式碼請參考git [email protected]:snippets/2580563.git 點選開啟連結