如何在Windows中的父C++程序中执行外部程序

How to execute external programm in the parent C++ programm in Windows?

本文关键字:程序 C++ 执行 外部 Windows      更新时间:2023-10-16
int system(const char *str);
    declared in stdlib.h

据我所知,这段代码将生成一个不在父进程内的新进程,任务管理器中将有两个进程 - 父进程和子进程。

如何在父进程中生成子进程?即在任务管理器中必须只有一个 - 父 - 进程。

#include <windows.h>
#include <stdio.h>
#include <tchar.h>
void _tmain( int argc, TCHAR *argv[] )
{
    STARTUPINFO si;
    PROCESS_INFORMATION pi;
    ZeroMemory( &si, sizeof(si) );
    si.cb = sizeof(si);
    ZeroMemory( &pi, sizeof(pi) );
    if( argc != 2 )
    {
        printf("Usage: %s [cmdline]n", argv[0]);
        return;
    }
    // Start the child process. 
    if( !CreateProcess( NULL,   // No module name (use command line)
        argv[1],        // 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
        NULL,           // Use parent's starting directory 
        &si,            // Pointer to STARTUPINFO structure
        &pi )           // Pointer to PROCESS_INFORMATION structure
    ) 
    {
        printf( "CreateProcess failed (%d).n", GetLastError() );
        return;
    }
    // Wait until child process exits.
    WaitForSingleObject( pi.hProcess, INFINITE );
    // Close process and thread handles. 
    CloseHandle( pi.hProcess );
    CloseHandle( pi.hThread );
}

来源: MSDN