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 - 1.
Remarks
The I/O procedure is responsible for maintaining the current file position in the lDiskOffset member of the MMIOINFO structure.
Requirements
** Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
** Windows 95/98/Me:** Included in Windows 95 and later.
** Header:** Declared in Mmsystem.h; include Windows.h.
See Also