mmioSendMessage

The mmioSendMessage function sends a message to the I/O procedure associated with the specified file.

LRESULT mmioSendMessage(
  HMMIO hmmio,    
  UINT wMsg,      
  LPARAM lParam1, 
  LPARAM lParam2  
);
 

Parameters

hmmio

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

wMsg

Message to send to the I/O procedure.

lParam1 and lParam2

Parameters for the message.

Return Values

Returns a value that corresponds to the message. If the I/O procedure does not recognize the message, the return value should be zero.

Remarks

Use this function to send custom user-defined messages. Do not use it to send the MMIOM_OPEN, MMIOM_CLOSE, MMIOM_READ, MMIOM_WRITE, MMIOM_WRITEFLUSH, or MMIOM_SEEK messages. Define custom messages to be greater than or equal to the MMIOM_USER constant.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in mmsystem.h.
  Import Library: Use winmm.lib.

See Also

Multimedia File I/O Overview, Multimedia File I/O Functions, mmioOpen, MMIOM_OPEN, MMIOM_CLOSE, MMIOM_READ, MMIOM_WRITE, MMIOM_WRITEFLUSH, MMIOM_SEEK