问题描述
在我的MFC应用程序中，我设置了一个计时器并在该计时器上进行了一些操作，编写了一些实时数据；代码是:
in my MFC application, I set a timer and do something at timer, writting something realtime data; the code is:
//MyApplication.cpp
OnTimer() FILE* pfile = NULL;
errno_t errRet = _tfopen_s( &pfile, _T("process.txt"), _T("a") );
if ( 0!=errRet && NULL == pfile )
{
TRACE(_T("errRet=%d, pfile=%p, LastErr=%d\n"), errRet, pfile, GetLastError() );
}
//end 有时(看到它的机会很小)，如果条件为FALSE，并且跟踪为:"errRet = 13，pfile = 0x00000000，LastErr = 183"在我的应用程序中，只有一个线程(UI主线程) )操作此文件，因此无法同步.请有人给我一些关于这个错误的解释！！！谢谢！
sometimes(just very low chance to see it), the if condition is FALSE, and trace is :"errRet=13,pfile=0x00000000, LastErr=183" in my application, there is just one thread(UI main thread) operating this file, so no synchronization. please somebody give me some explain about this BUG!!! thanks!
推荐答案
还有其他可能导致此失败的原因.对于初学者，您无需指定文件的位置.要么在其他地方显式设置CWD，要么依赖于它实际上是您可以写入的位置...检查这两个假设.
There are other reasons why this might be failing as well. For starters, you aren''t specifying a location for the file. Either you''re setting the CWD explicitly elsewhere, or you''re relying on it being a location you can actually write to... Check both of these assumptions.
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