获取指定进程窗口

获取指定进程的窗口

1. 枚举窗口EnumWindows
2. 通过窗口句柄，获取当前窗口的进程id GetWindowThreadProcessId

typedef struct PorcessTopWnd
{
	HWND hWnd;
	DWORD dwProcessId;
	TCHAR szTitle[256];
}PorcessTopWnd;

HWND GetHwndByPid(DWORD dwProcessId, const TCHAR *szTitle)
{
	PorcessTopWnd processTopWnd = { 0 };
	processTopWnd.dwProcessId = dwProcessId;
	lstrcpy(processTopWnd.szTitle, szTitle);

	EnumWindows([](HWND hwnd, LPARAM lparam){
		PorcessTopWnd *processTopWnd = (PorcessTopWnd *)lparam;

		DWORD dwProcessId = 0;
		GetWindowThreadProcessId(hwnd, &dwProcessId);
		if (dwProcessId == processTopWnd->dwProcessId)
		{
			TCHAR szTitle[128] = _T("");
			::GetWindowText(hwnd, szTitle, 128);
			if (lstrcmp(szTitle, processTopWnd->szTitle) == 0)
			{
				processTopWnd->hWnd = hwnd;
				return FALSE;
			}
		}
		return TRUE;
	}, (LPARAM)&processTopWnd);

	return processTopWnd.hWnd;
}