Timers and Stopwatches

GISDK provides two sets of tools for utilizing the computer clock. Timers let you program automatic interrupts at scheduled intervals. At each programmed interval, a macro that you designate is run automatically. The Maptitude Tools>Routing & Directions>GPS>Read GPS Data command uses this capability to provide automatic tracking and map updates. You can use timers for similar applications, or for many different types of custom applications. You can also put Maptitude to sleep for a specified amount of time.

Here is a summary of the timer GISDK functions:

GISDK Function	Summary
CreateTimer()	Sets up a timer that executes a macro at fixed-time intervals
DestroyTimer()	Cancels a timer that executes a macro at fixed-time intervals
Pause()	Uses a timer to go into a waiting loop that yields to other processes, allowing Windows messages to be dispatched while waiting
Sleep()	Uses a timer to go into a waiting loop that yields to other processes

Stopwatches let you track the amount of time required for certain processes to take place. You can use stopwatches to measure the performance of GISDK applications or to report information on system performance to the user.

Here is a summary of the stopwatch GISDK functions:

GISDK Function	Summary
CreateStopwatch()	Starts a stopwatch to track clock time
CheckStopwatch()	Determines the elapsed time since a stopwatch was started
DestroyStopwatch()	Stops or cancels a stopwatch