要使用ShellExecuteEx函数来捕获标准输入/输出/错误，你需要使用匿名管道来实现。以下是一个示例代码：
#include <windows.h>#include <iostream>#include <string>// 函数用于创建匿名管道bool CreatePipeHandles(HANDLE& hReadPipe, HANDLE& hWritePipe){SECURITY_ATTRIBUTES saAttr;saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);saAttr.bInheritHandle = TRUE;saAttr.lpSecurityDescriptor = NULL;// 创建管道if (!CreatePipe(&hReadPipe, &hWritePipe, &saAttr, 0)){std::cout << "Failed to create pipe." << std::endl;return false;}// 设置管道的继承属性if (!SetHandleInformation(hReadPipe, HANDLE_FLAG_INHERIT, 0)){std::cout << "Failed to set handle information." << std::endl;return false;}return true;}// 函数用于执行Shell命令并捕获标准输入/输出/错误bool ExecuteCommand(const std::string& command, std::string& output){HANDLE hReadPipe, hWritePipe;// 创建管道if (!CreatePipeHandles(hReadPipe, hWritePipe)){return false;}// 创建进程信息结构体STARTUPINFOA si;ZeroMemory(&si, sizeof(STARTUPINFOA));si.cb = sizeof(STARTUPINFOA);si.hStdError = hWritePipe;si.hStdOutput = hWritePipe;si.hStdInput = hReadPipe;si.dwFlags |= STARTF_USESTDHANDLES;// 创建进程信息结构体PROCESS_INFORMATION pi;ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));// 启动Shell命令if (!CreateProcessA(NULL, const_cast<LPSTR>(command.c_str()), NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)){std::cout << "Failed to execute command." << std::endl;return false;}// 关闭无用的管道句柄CloseHandle(hReadPipe);CloseHandle(hWritePipe);// 等待进程执行完成WaitForSingleObject(pi.hProcess, INFINITE);// 读取管道中的输出数据char buffer[4096];DWORD bytesRead;while (ReadFile(si.hStdOutput, buffer, sizeof(buffer) - 1, &bytesRead, NULL) && bytesRead != 0){buffer[bytesRead] = '\0';output += buffer;}// 关闭进程和线程句柄CloseHandle(pi.hProcess);CloseHandle(pi.hThread);return true;}int main(){std::string command = "dir"; // 你可以修改为你想要执行的Shell命令std::string output;if (ExecuteCommand(command, output)){std::cout << "Command output:" << std::endl;std::cout << output << std::endl;}return 0;}在上面的示例代码中，CreatePipeHandles函数用于创建匿名管道，ExecuteCommand函数用于执行Shell命令并捕获标准输入/输出/错误。你可以将command变量修改为你想要执行的Shell命令。执行完成后，输出将被存储在output字符串中，并打印到控制台上。
