c++ - createprocess结束后如何从exe返回参数？

Question

我在vc++中使用create process打开了一个exe文件，并通过它传递了参数，我只想知道在exe关闭后如何从exe中获取一个参数给vc++程序。

我的创建流程代码

    STARTUPINFO si;     
    PROCESS_INFORMATION pi;

   ZeroMemory( &si, sizeof(si) );
   si.cb = sizeof(si);
   ZeroMemory( &pi, sizeof(pi) );
   char  strcrt[256];

    char * str = path;

    char buf[256] = "buffer ";
    strcat (buf, str);

    LPTSTR cmdArgs = TEXT(buf);

  if (
    CreateProcess
            (
            TEXT("C:\\MatrixPlugin\\AdobePlugin.exe"),
            cmdArgs,NULL,NULL,FALSE,
            CREATE_NEW_CONSOLE,
            NULL,NULL,
            &si,
            &pi
            )
            )
        {
            WaitForSingleObject(pi.hProcess, INFINITE);
        }

    CloseHandle( pi.hProcess );
    CloseHandle( pi.hThread );
    }

这段代码启动了一个代号为AdobePlugin的vb.net WPF，代码是

Private Sub App_Startup(ByVal sender As Object, ByVal e As StartupEventArgs)
    If (e.Args.Length <> 0) Then
        MsgBox(e.Args(0))
    Else
        MsgBox("Please open a PDF document first.")
    End If
    Dim Send As String = "c:\help\help_123.pdf"
    'here I want to sent this string to the vc++ code. 
    'I dont want return true or false
    'But I want to return a string contains a address in it.
    'Window.Close()

End Sub

请一些人帮助我解决这个问题......

Answer 1

如果返回数据是整数，可以使用进程退出代码和GetExitCodeProcess。如果它是更复杂的数据，你可以使用进程间通信，比如读取执行进程的输出流(在 STARTUPINFO 结构中有一个字段)