如何允许其他程序读取文件，同时使用 fopen 和 fwrite 写入文件？

Question

我正在为正在创建的视频打开一个文件，并使用 C++ 中的 fopen 写入磁盘，我能够写入磁盘。但是当我在写它的时候尝试读取它时，它会抛出错误，说它没有权限读取文件，一旦我关闭文件或停止程序，我突然可以从中读取。

没写完没问题，写的好像我崩溃了程序一样，还能读。另外，VLC 的日志告诉我这是一个权限问题。

知道如何更改该权限吗？

回复 William 要求提供代码片段或打开是否发生在文件存在之前：

Thanks William, here's what I've got. I waited a few minutes and could see the file with windows explorer by that point and waited until after I'd flushed and data was there, couldn't open with VLC or Notepad++ or Notepad or Windows Media Player

Notepad says cannot access because it is being used by another process, others too.
Here is the VLC log while it tries to open this:
http://snippi.com/s/g4cbu23

Here is where I create the file with fopen:
http://snippi.com/s/cyajw4h

At the very end is where I write to the file using fwrite and flush:
http://snippi.com/s/oz27m0g

Answer 1

如果您希望文件可共享，您需要将 _fsopen 与 _SH_DENYNO 结合使用。

如何允许其他程序读取文件，同时使用 fopen 和 fwrite 写入文件？

How to allow other programs to read file, while writing to it using fopen and fwrite?

c++

fopen