CreateProcess()輸出到文件

利用CreateProcess()創建子進程，並輸出到文件，主要步驟如下：

//首先用CreateFile創建文件，得到文件句柄。 HANDLE hFile = CreateFile(m_sAllPath.c_str(),GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ,&sa,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL); if (hFile == INVALID_HANDLE_VALUE) { printf("Could not open file (error %d)/n", GetLastError()); return 0; } printf("CreateFile success/n"); STARTUPINFO si; PROCESS_INFORMATION pi; LPTSTR szCmdLine = const_cast<LPTSTR>(sTotalCmd.c_str()); //然後將子進程的標準輸出重定向到剛剛創建的文件句柄。 HANDLE hTemp = GetStdHandle(STD_OUTPUT_HANDLE); SetStdHandle(STD_OUTPUT_HANDLE, hFile);// 設置標準輸出 GetStartupInfo(&si); // 獲取本進程的STARTUPINFO結構信息 ZeroMemory( &pi, sizeof(pi) ); // Start the child process. if( !CreateProcess( NULL, // No module name (use command line) szCmdLine, // Command line NULL, // Process handle not inheritable NULL, // Thread handle not inheritable FALSE, // Set handle inheritance to FALSE 0, // No creation flags NULL, // Use parent's environment block m_sBinDir.c_str(), // Use parent's starting directory &si, // Pointer to STARTUPINFO structure &pi ) // Pointer to PROCESS_INFORMATION structure ) { printf( "CreateProcess failed (%d)./n", GetLastError() ); return 0; } printf("CreateProcess success/n"); WaitForSingleObject( pi.hProcess, INFINITE );// Wait until child process exits. // Close process and thread handles. CloseHandle( pi.hProcess ); CloseHandle( pi.hThread ); CloseHandle(hFile); // 最後恢復本進程的標準輸出 SetStdHandle(STD_OUTPUT_HANDLE, hTemp);