mmioFlush

最新推荐文章于 2022-02-28 21:02:13 发布

wmnmtm

最新推荐文章于 2022-02-28 21:02:13 发布

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本文链接：https://blog.youkuaiyun.com/wmnmtm/article/details/82921620

本文深入探讨了mmioFlush函数的功能，包括其句法、参数、返回值、备注以及实现流程，并通过实际例子验证了其效果。重点解释了如何使用此函数将文件的I/O缓冲区写入磁盘。

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The mmioFlush function writes the I/O buffer of a file to disk if the buffer has been written to.

本函数写一个文件的I/O缓冲区到磁盘，如果这个缓冲区已经被写入数据。

我自己的一个例子刚好验证了这个功能：

句法：

MMRESULT mmioFlush(   HMMIO hmmio,   UINT fuFlush );

hmmio

File handle of a file opened by using the mmioOpen function.

fuFlush

Flag determining how the flush is carried out. It can be zero or the following.

Flag决定如何输出，它可以是0或是以下值：

Value	Description
MMIO_EMPTYBUF	Empties the buffer after writing it to the disk.

Returns zero if successful or an error otherwise. Possible error values include the following.

Return code	Description
MMIOERR_CANNOTWRITE	The contents of the buffer could not be written to disk.

Closing a file with the mmioClose function automatically flushes its buffer.

If there is insufficient disk space to write the buffer, mmioFlush fails, even if the preceding calls of themmioWrite function were successful.

Build date: 9/7/2011