MMIOM_SEEK - Win32 Multimedia Programmer's Reference

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MMIOM_SEEK

The MMIOM_SEEK message is sent to an I/O procedure by the mmioSeek function to request that the current file position be moved.

MMIOM_SEEK

lParam1 = (LPARAM) lNewFilePos

lParam2 = (LPARAM) lChangeFlag

Parameters
lNewFilePos

New file position. The meaning of this value is dependent on the flag specified in lChangeFlag.

lChangeFlag
Flag specifying how the file position is changed. The following values are defined:

SEEK_CUR

Move the file position to be lNewFilePos bytes from the current position. NewFilePos can be positive or negative.

SEEK_END

Move the file position to be lNewFilePos bytes from the end of the file.

SEEK_SET

Move the file position to be lNewFilePos bytes from the beginning of the file.

Return Values
Returns the new file position. If there is an error, the return value is

Remarks
The I/O procedure is responsible for maintaining the current file position in the lDiskOffset member of the MMIOINFO structure.

See Also
mmioSeek, MMIOINFO

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