_fsopen是以流的形式打开指定文件并使该文件做好准备以进行后续的
共享读写的
函数。
Opens a stream with file sharing.
Name of the file to open.
Type of access permitted.
Type of sharing allowed.
Sets Compatibility mode for 16-bit applications.
Permits read and write access.
Denies read access to the file.
Denies read and write access to the file.
Denies write access to the file.