TimeProc

The TimeProc function callback function that is called once upon the expiration of a single event or periodically upon the expiration of periodic events.

void CALLBACK TimeProc(
  UINT uID,      
  UINT uMsg,     
  DWORD dwUser,  
  DWORD dw1,     
  DWORD dw2      
);
 

TimeProc is a placeholder for the application-defined function name.

Parameters

uID

Identifier of the timer event. This identifier was returned by the timeSetEvent function when the timer event was set up.

uMsg

Reserved; do not use.

dwUser

User instance data supplied to the dwUser parameter of timeSetEvent.

dw1 and dw2

Reserved; do not use.

Return Values

This function does not return a value.

Remarks

Applications should not call any system-defined functions from inside a callback function, except for PostMessage, timeGetSystemTime, timeGetTime, timeSetEvent, timeKillEvent, midiOutShortMsg, midiOutLongMsg, and OutputDebugString.

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: User-defined.

See Also

Multimedia Timers Overview, Multimedia Timer Functions, timeSetEvent, PostMessage, timeGetSystemTime, timeGetTime, timeKillEvent, midiOutShortMsg, midiOutLongMsg, OutputDebugString