EnumWindows失败?

[liulin2025]

int CALLBACK EnumWindowsProc(HWND hwnd, LPARAM param)
{
	DWORD pID;
	DWORD TpID = GetWindowThreadProcessId(hwnd, &pID);//get process id
	if (TpID == (DWORD)param)
	{
		apphwnd=hwnd;//hwnd is the window handle
		SetEvent(g_hEvent);
		return false;
	}
	ResetEvent(g_hEvent);
	return true;
}	

	::EnumWindows(&EnumWindowsProc, processInfo.dwThreadId);//Iterate all windows

设置了断点，跑了很久，一直不退出

[sumos]

那就说明，死循环？

[liulin2025]

引用 2 楼 zhoujielunzhimi 的回复:

那就说明，死循环？

明明要枚举的窗口已经打开了，出现了啊。 为什么还失败

[Eleven]

设置了断点，跑了很久，一直不退出 ----------------------------- 那不是说明EnumWindows函数调用成功了么~

[BeanJoy]

DWORD TpID = GetWindowThreadProcessId(hwnd, &pID);//get process id

这句是得到创建hwnd这个窗口的线程ID(TpID）和进程ID(pID)，你确定如下

::EnumWindows(&EnumWindowsProc, processInfo.dwThreadId);//Iterate all windows

processInfo.dwThreadId这个线程有创建过窗口？

[傻X]

你互斥肯定没做好，代码贴少了

[BeanJoy]

你要早上代码，早解决了：

    { /* success */
		
	WaitForInputIdle(processInfo.hProcess, INFINITE);
        ::EnumWindows(&EnumWindowsProc, processInfo.dwThreadId);//Iterate all windows
        hProcess = processInfo.hProcess;
    } /* success */

加上WaitForInputIdle这个，CreateProcessr后，立即去找窗口，可能会找不到，那个进程都可能还没被加载进内存，你怎么能找到？

[liulin2025]

引用 4 楼 VisualEleven 的回复:

设置了断点，跑了很久，一直不退出 ----------------------------- 那不是说明EnumWindows函数调用成功了么~

晕你弄反了，

[liulin2025]

引用 5 楼 BeanJoy 的回复:

C/C++ code?1DWORD TpID = GetWindowThreadProcessId(hwnd, &pID);//get process id 这句是得到创建hwnd这个窗口的线程ID(TpID）和进程ID(pID)，你确定如下 C/C++ code?1::EnumWindows(&EnumWindowsProc, processInfo……

确定啊，我是打开某个程序后，这个程序有窗口，打开的同时我的程序就会枚举窗口 附上代码：

HANDLE handle;//process handle
HWND apphwnd;//window handle

/*************Global functions for hosting******************/
//Function to enumerate all windows.
int CALLBACK EnumWindowsProc(HWND hwnd, LPARAM param)
{
	DWORD pID;
	DWORD TpID = GetWindowThreadProcessId(hwnd, &pID);//get process id
	if (TpID == (DWORD)param)
	{
		apphwnd=hwnd;//hwnd is the window handle
		SetEvent(g_hEvent);
		return false;
	}
	ResetEvent(g_hEvent);
	return true;
}


//Functio to start a orocess and return the process handle
HANDLE StartProcess(LPCTSTR program, LPCTSTR args)
{

	HANDLE hProcess = NULL;
	PROCESS_INFORMATION processInfo;
	STARTUPINFO startupInfo;
	::ZeroMemory(&startupInfo, sizeof(startupInfo));
	startupInfo.cb = sizeof(startupInfo);
	startupInfo.dwFlags=STARTF_USESHOWWINDOW;
	startupInfo.wShowWindow=SW_HIDE;
	if(::CreateProcess(program, (LPTSTR)args, 
		NULL,  // process security
		NULL,  // thread security
		FALSE, // no inheritance
		0,     // no startup flags
		NULL,  // no special environment
		NULL,  // default startup directory
		&startupInfo,
		&processInfo))
	{ /* success */

		::EnumWindows(&EnumWindowsProc, processInfo.dwThreadId);//Iterate all windows
		hProcess = processInfo.hProcess;

	} /* success */
	return hProcess;
}

/**********************************************************/
//handle for host menu
void CHostMSPaintDlg::OnActionHostmspaint() 
{
	CRect rect;
	DWORD nRet=-1;
	g_hEvent=CreateEvent(NULL,FALSE,FALSE,NULL);
	GetClientRect(&rect);//get our dialog size into rect
	handle=StartProcess(NULL,"C:\\Program Files\\Microsoft Office\\Office12\\WINWORD.EXE	c:\\操作word的类.docx");//Start ms paint
	nRet=WaitForSingleObject(g_hEvent,5000);				//waited the target window for 2000 ms
	CloseHandle(g_hEvent);

	if(nRet!=WAIT_OBJECT_0)
	{
			::MessageBox(NULL,_T("启动word,超时!"),_T("错误提示"),MB_ICONEXCLAMATION);
			SendMessage(WM_CLOSE,0,0);
			return;
	}
	if(apphwnd!=NULL)//check for window handle
	{
		::SetParent(apphwnd,m_hWnd);//set parent of ms paint to our dialog.
		SetWindowLong(apphwnd, GWL_STYLE, WS_VISIBLE);//eraze title of ms paint window.
		//Positioning ms paint.
		::MoveWindow(apphwnd, rect.left, rect.top,rect.right, rect.bottom, true);
		::ShowWindow(apphwnd,SW_SHOW);

	}
	else//no window for our process
		MessageBox("Cannot find Window");	
}

有兴趣的可以自己做个实验

[liulin2025]

引用 9 楼 BeanJoy 的回复:

你要早上代码，早解决了： C/C++ code?123456 { /* success */ WaitForInputIdle(processInfo.hProcess, INFINITE); ::EnumWindows(&EnumWindowsProc, processInfo.dwThreadId);//Itera……

多谢你了啊，呵呵 我试试啊，