Multimedia File I/O Reference
[The feature associated with this page, Multimedia File I/O, is a legacy feature. It has been superseded by Source Reader. Source Reader has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader instead of Multimedia File I/O, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
This section describes the functions, macros, messages, and structures associated with multimedia file input and output. These elements are grouped as follows.
Basic I/O
Buffered I/O
RIFF I/O
Custom I/O Procedures
- IOProc
- mmioInstallIOProc
- MMIOM_CLOSE
- MMIOM_OPEN
- MMIOM_READ
- MMIOM_RENAME
- MMIOM_SEEK
- MMIOM_WRITE
- MMIOM_WRITEFLUSH
- mmioSendMessage
Related topics