hab (HAB) - input

Anchor-block handle.

hwnd (HWND) - input

Window handle that is part of the timer identification.

NULLHANDLE

The idTimer parameter is ignored, and this function returns a unique, nonzero, identity which represents that timer. The timer message is posted in the queue associated with the current thread, with the parameter of the QMSG structure set to NULLHANDLE.
Other
Window handle.

idTimer (ULONG) - input

Timer identifier.

The value of an application-timer identifier must be below TID_USERMAX to avoid clashes with timers used by the system.

A timer identification, TID_SCROLL, is created by a scroll bar control. An application does not normally see the associated WM_TIMER, but passes it to the scroll-bar control.

A timer identification, TID_CURSOR, is created when the cursor is flashing. An application must ensure that the associated WM_TIMER is passed on to the default window procedure.

dtTimeout (ULONG) - input

Delay time in milliseconds.

For OS/2 Warp Version 3, the value of this parameter must be in the range of 0-4 294 967 295.

For OS/2 2.1 and earlier, the value of this parameter must be in the range of 0-65 535.

idTimerStarted (ULONG) - returns

Timer identity.

A return value of 0 indicates that an error occurred.

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