GetExit codeProcess（）返回1时，过程尚未结束 [英] GetExitCodeProcess() return 1 when process is not yet finished

问题描述

如果我创建了一个过程，两个管套它，这个过程在某个时间需要一些用户输入， GetExit codeProcess（）从Windows的C API返回总是 1 。举个例子，你可以利用Windows 时间命令，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:

然后立刻退出，而不等待输入。

And then exits immediately without waiting for input.

我不希望这个过程结束，直到它真正完成这样我就可以管输入到它。我怎样才能解决这个问题。

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.

我已经建立了这个循环（我仍然希望能够确定何时过程结束）：

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;
}

先谢谢了。

推荐答案

GetExit codeProcess 没有的收益的 STILL_ACTIVE ; STILL_ACTIVE 是退出code通过 lpExit code out参数返回。你需要测试返回的退出code：

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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