Jump to content

MMProgRef - SHD Messages

From EDM2
Revision as of 01:04, 9 June 2025 by Martini (talk | contribs) (Created page with "{{MMProgRef}} The stream handler device (SHD) messages are provided by a stream handler through a single entry point, SHDEntryPoint, to a physical device driver. For this interface, all pointers are 16:16 pointers; this enables the current 16-bit device-driver model to be used for stream handlers. There are two SHD messages. The message number must be used in the ulFunction field, of the parameter structure passed in the call, to indicate which message is being requested...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Reprint Courtesy of International Business Machines Corporation, © International Business Machines Corporation

Multimedia Programming Reference
  1. Introduction
  2. What's New...
  3. MCI Functions
  4. High-Level Macro Service Functions
  5. Subsystem Messages
  6. Notification Messages
  7. MCI Command Messages
  8. String Commands
  9. Memory Playlist Commands
  10. Graphic Button Control
  11. Secondary Window Functions
  12. MMIO Functions
  13. MMIO Messages
  14. CODEC Messages
  15. DIVE Functions
  16. Real-Time MIDI Functions
  17. SPI Functions
  18. Data Stream State Table
  19. SMH Messages
  20. DDCMD Messages
  21. VSD Commands
  22. SHD Messages
  23. SHC Messages
  24. Data Types
  25. Types of MIDI Messages
  26. Multimedia Specification Overview
  27. Resource Interchange File Format
  28. Multimedia File Formats
  29. RIFF Compound Files and Elements - Sharing and Access
  30. Return Codes
  31. Notices
  32. Glossary

The stream handler device (SHD) messages are provided by a stream handler through a single entry point, SHDEntryPoint, to a physical device driver. For this interface, all pointers are 16:16 pointers; this enables the current 16-bit device-driver model to be used for stream handlers. There are two SHD messages. The message number must be used in the ulFunction field, of the parameter structure passed in the call, to indicate which message is being requested by the stream handler.

The following table lists the SHD messages:

Message Number Message Description
1L SHD_REPORT_EVENT Reports an event to the stream handler.
0L SHD_REPORT_INT Reports an interrupt from a device.