應(yīng)同事需要做一個局域網(wǎng)時間同步的,找了下資料發(fā)現(xiàn)net time最方便,于新建了一個控制臺項目,用CreateProcess運行cmd命令

運行了后發(fā)現(xiàn)時間根本就沒有改變,折騰了一個晚上才發(fā)現(xiàn)錯在字符轉(zhuǎn)義上,下面的代碼是錯誤示范

//定義一個用于產(chǎn)生子進(jìn)程的STARTUPINFO結(jié)構(gòu)體 （定義見CreateProcess,函數(shù)說明）    
	STARTUPINFO siStartInfo;
	//定義一個用于產(chǎn)生子進(jìn)程的PROCESS_INFORMATION結(jié)構(gòu)體 （定義見CreateProcess,函數(shù)說明）    
	PROCESS_INFORMATION piProcInfo;

	//對STARTUPINFO結(jié)構(gòu)體賦值，對stdin,stdout的Handle設(shè)置為剛才得到的管道HANDLE    
	ZeroMemory(&siStartInfo, sizeof(STARTUPINFO));
	siStartInfo.cb = sizeof(STARTUPINFO);
	siStartInfo.dwFlags = STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;  //允許設(shè)置showwindow和設(shè)置新進(jìn)程的輸入輸出句柄參數(shù)  
	siStartInfo.wShowWindow = SW_HIDE;
	siStartInfo.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);     //意思是：子進(jìn)程的stdout輸出到hStdOutWrite    
	siStartInfo.hStdError = GetStdHandle(STD_ERROR_HANDLE);        //意思是：子進(jìn)程的stderr輸出到hStdErrWrite    
	siStartInfo.hStdInput = GetStdHandle(STD_INPUT_HANDLE);
	
	TCHAR CommandLine[] = _T("/c net time \\192.168.1.1 /set /y >C:\\2.txt");  //  
	//ShellExecute(NULL, _T("open"), _T("C:\\Windows\\System32\\cmd.exe"), CommandLine, NULL, SW_SHOW);
	// 產(chǎn)生子進(jìn)程，具體參數(shù)說明見CreateProcess函數(shù)    
	BOOL bSuccess = CreateProcess(L"C:\\Windows\\System32\\cmd.exe",
		CommandLine,    // 子進(jìn)程的命令行    
		NULL,                   // process security attributes    
		NULL,                   // primary thread security attributes    
		FALSE,                   // handles are inherited    
		CREATE_NO_WINDOW,       // creation flags  如果想新進(jìn)程顯示窗口, 可以設(shè)置CREATE_NEW_CONSOLE  
		NULL,                  // use parent's environment    
		NULL,                  // use parent's current directory    
		&siStartInfo,      // STARTUPINFO pointer    
		&piProcInfo);     // receives PROCESS_INFORMATION 
	if (bSuccess)
	{

		TCHAR prints[MAX_PATH] = { 0 };
		_stprintf_s(prints, MAX_PATH, _T("ID:%d,Process:%d\n"), piProcInfo.dwProcessId, piProcInfo.hProcess);
		//MessageBox(NULL, prints, NULL, MB_SETFOREGROUND);
		CloseHandle(piProcInfo.hProcess);
		CloseHandle(piProcInfo.hThread);
		//WaitForSingleObject(piProcInfo.hProcess, INFINITE);
	}

以下是正確的代碼,寫了這么久的代碼竟然忽略了在C++兩個\\表示一個\ ,

因為遠(yuǎn)程IP是用雙\\表示的,在C++就要多加兩個\\

結(jié)束語:

感覺CreateProcess不用設(shè)置控制臺的輸入輸出流,也能執(zhí)行成功,因為時間關(guān)系就不測試了,有興趣的自己測試去.