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TimeProc callback function

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

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

Syntax


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

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

Reserved; do not use.

dw2

Reserved; do not use.

Return value

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.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Mmsystem.h (include Windows.h)

See also

Multimedia Timers
Multimedia Timer Functions

 

 

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