WriteFile() API 函数存在错误，这实在令人难以置信。下一步必须检查错误代码并在函数失败时调用 GetLastError()。
It's pretty implausible that the WriteFile() API function has a bug. Your next step must be to check error codes and call GetLastError() when the function fails.
WriteFile function in our case was failing because we had called the function in the timer. There was another function in a thread which was calling ReadFile (and accessing the same file) in a parallel thread. Since the WriteFile did not get the access to the file at that instance, it used to fail!
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WriteFile()API 函数存在错误，这实在令人难以置信。下一步必须检查错误代码并在函数失败时调用GetLastError()。It's pretty implausible that the
WriteFile()API function has a bug. Your next step must be to check error codes and callGetLastError()when the function fails.可能导致这种情况的一件事是：
One possible thing that can lead to that is :
在我们的例子中，WriteFile 函数失败了，因为我们在计时器中调用了该函数。线程中有另一个函数正在并行线程中调用 ReadFile（并访问同一文件）。由于 WriteFile 在该实例中无法访问该文件，因此它曾经失败！
WriteFile function in our case was failing because we had called the function in the timer. There was another function in a thread which was calling ReadFile (and accessing the same file) in a parallel thread. Since the WriteFile did not get the access to the file at that instance, it used to fail!