匿名管道实现获取控制台程序输出

本代码经过严格单元测试，如果谁能其中检测到代码bug，我请他一杯最好喝的咖啡！☕️

#define EXECDOSCMD "dir c:" //可以换成你的命令
#define _CRT_SECURE_NO_WARNINGS#include 
#include 
#include 
#include 
#include <string.h>
#include 
#include <string>
#include int main()
{HANDLE hRead, hWrite;SECURITY_ATTRIBUTES securityAttr;securityAttr.nLength = sizeof(SECURITY_ATTRIBUTES);securityAttr.lpSecurityDescriptor = NULL;securityAttr.bInheritHandle = TRUE;if (CreatePipe(&hRead, &hWrite, &securityAttr, 0) == 0) {printf("ERROR!! CreatePipe()=[0]. GetLastError()=[%d].\n", GetLastError());return FALSE;}STARTUPINFO            startupInfo;PROCESS_INFORMATION processInfo;DWORD dwRetVal = 0;startupInfo.cb = sizeof(STARTUPINFO);GetStartupInfo(&startupInfo);startupInfo.hStdError = hWrite;            //把创建进程的标准错误输出重定向到管道输入 startupInfo.hStdOutput = hWrite;           //把创建进程的标准输出重定向到管道输入 startupInfo.wShowWindow = SW_HIDE;startupInfo.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;char szCmdLine[1024];sprintf(szCmdLine, "cmd.exe /C %s", EXECDOSCMD);if (CreateProcess(NULL, szCmdLine, NULL, NULL, TRUE, NULL, NULL, NULL, &startupInfo, &processInfo) == 0) {printf("ERROR!! CreateProcess()=[0]. GetLastError()=[%d].\n", GetLastError());CloseHandle(hWrite);CloseHandle(hRead);return FALSE;}else {WaitForSingleObject(processInfo.hProcess, INFINITE);if (GetExitCodeProcess(processInfo.hProcess, &dwRetVal) == 0) {printf("ERROR!! GetExitCodeProcess()=[0]. GetLastError()=[%d].\n", GetLastError());}else {printf("The command runs successfully with returns code: [%d].\n", dwRetVal);}}CloseHandle(processInfo.hThread);CloseHandle(processInfo.hProcess);CloseHandle(hWrite);char szOutputBuffer[4096]; DWORD dwBytesRead;while (true) {memset(szOutputBuffer, 0x00, sizeof(szOutputBuffer));if (ReadFile(hRead, szOutputBuffer, 4095, &dwBytesRead, NULL) == FALSE)break;printf("result = [%s]\n", szOutputBuffer);}CloseHandle(hRead);return TRUE;
}

转载于:https://www.cnblogs.com/moiez/p/6000049.html

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