当进程尚未完成时，GetExitCodeProcess() 返回 1 [英] GetExitCodeProcess() return 1 when process is not yet finished

问题描述

如果我为它创建一个进程和两个管道集，并且该进程在某个时间需要一些用户输入，则来自 Windows C API 的 GetExitCodeProcess() 总是返回 1.例如，您可以使用 Windows time 命令，这将返回:

If I create a process and two pipe sets for it, and that process needs at a certain time some user input, the GetExitCodeProcess() from the Windows C API returns always 1. As an example you can take the Windows time command, this will return:

The current time is: ...
Enter the new time:

然后立即退出，无需等待输入.

And then exits immediately without waiting for input.

我不希望该过程在它真正完成之前完成，以便我可以通过管道将输入传递给它.我该如何解决这个问题.

I don't want the process to finish until the it has really finished so I can pipe input to it. How can I solve this issue.

我已经构建了这个循环(我仍然希望能够确定处理何时完成):

I have built this loop (I still want to be able to determine when to process has finished):

for (;;)
{
    /* Pipe input and output */
    if (GetExitCodeProcess(...) != STILL_ACTIVE) break;
}

提前致谢.

推荐答案

GetExitCodeProcess 不返回 STILL_ACTIVE;STILL_ACTIVE 是通过 lpExitCode 输出参数返回的退出代码.您需要测试返回的退出代码:

GetExitCodeProcess doesn't return STILL_ACTIVE; STILL_ACTIVE is the exit code returned via the lpExitCode out parameter. You need to test the exit code that was returned:

DWORD exitCode = 0;
if (GetExitCodeProcess(handle, &exitCode) == FALSE)
{
    // Handle GetExitCodeProcess failure
}

if (exitCode != STILL_ACTIVE)
{
    break;
}

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