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TimerProc callback function

An application-defined callback function that processes WM_TIMER messages. The TIMERPROC type defines a pointer to this callback function. TimerProc is a placeholder for the application-defined function name.

Syntax


VOID CALLBACK TimerProc(
  _In_  HWND hwnd,
  _In_  UINT uMsg,
  _In_  UINT_PTR idEvent,
  _In_  DWORD dwTime
);

Parameters

hwnd [in]

Type: HWND

A handle to the window associated with the timer.

uMsg [in]

Type: UINT

The WM_TIMER message.

idEvent [in]

Type: UINT_PTR

The timer's identifier.

dwTime [in]

Type: DWORD

The number of milliseconds that have elapsed since the system was started. This is the value returned by the GetTickCount function.

Return value

This function does not return a value.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Winuser.h (include Windows.h)

See also

Reference
KillTimer
SetTimer
WM_TIMER
Conceptual
Timers

 

 

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