### Timer Availability LightWave® 9.5 Component Layout Header lwtimer.h Timers can be used to execute code at specified intervals. This interface provides a means of creating one or more interval-based timer instances. Global Call
       LWTimer *sdkTimer;
       sdkTimer = global( LWTIMER_GLOBAL, GFUSE_TRANSIENT );
The global function returns a pointer to an `LWTimer` structure.
        typedef struct st_LWTimer {
            void    (*timerAdd)(TimerEventProc proc,void *data,unsigned long interval);
            void    (*timerRemove)(TimerEventProc proc,unsigned long interval);
        } LWTimer;
Event Support When creating a timer instance, you must provide a pointer to a callback function that will be invoked whenever the timer expires. The function has the following prototype: `` `typedef int (*TimerEventProc)(void *clientData);` The `clientData` pointer is the one provided to the `timerAdd()` function when the you create the instance. Timers return an integer value of either 0 or 1. This Boolean value indicates to the timer management system whether or not this particular timer instance should be implicitly removed from the timer list, and from further processing. If a value of 1 is returned, then the timer is removed from the system, and a subsequent call to `timerRemove()` will not be required for this instance. Exported Timer Functions
    timerAdd( proc, data, interval )
Registers a new timer instance. `proc` is a pointer to a function of type `TimerEventProc`. The `data` pointer is instance data for this particular timer, and is user defined. The `interval` value is interpreted as the number of milliseconds before each timer event expires, and the `proc` callback function is activated.
    timerRemove( proc, interval )
A timer instance can be explicitly removed using this call. Unless the timer instance has implicitly removed itself by returning 1, this call must be made for each instance created by `timerAdd()`. The `proc` pointer used in timerAdd() is used to identify the instance. The `interval` value is considered optional, where a value of 0 will cause the first timer instance that uses `proc` as its event callback to be removed. Otherwise, the instance that uses `proc` and `interval` will be removed.