Pausing a timer

It can be important to have the ability to stop or pause a timer once it is started. The difference between stopping and pausing a timer is in keeping track of where the timer was when it was interrupted. In this recipe, you'll learn how to pause a timer. Of course, if you never resume the timer, then the act of pausing it has the same effect as stopping it.

How to do it...

Use the following steps to create a count-up timer and pause function:

1. Create a new main stack.
2. Place a field on the stack's card and name it timerDisplay.
3. Place a button on the stack's card and name it Count Up.
4. Add the following code to the Count Up button:

   on mouseUp
     local pTime
     put 0 into pTime
     put pTime into fld "timerDisplay"
     countUpTimer pTime
   end mouseUp

5. Add the following code to the Count Up button:

   on countUpTimer currentTimerValue
     add 1 to currentTimerValue
     put currentTimerValue into fld "timerDisplay"
     if currentTimerValue < 60 then 
       send &quot...