The Pre-Show trigger allows you to trigger an action before the object is displayed. This trigger precedes an On Show trigger, in other words, any action set in the Pre-Show will happen before the object is displayed on screen.
Note:
This action is very useful if you want to set or reset variables or actions before displaying the object. For example, before you display a page, you could have a Pre-Show trigger on the page which checks a variable to see if this page should be displayed or ignored. If you had put the same variable on the On Show trigger and the variable stated you should ignore this page, the user would see the page display for an instance (like a ‘flash’) before the correct page was displayed. See also the Pre-Hide trigger.
Add the Pre-Show trigger to your Actions Organiser, as described in Creating and Editing Actions.
Click on the Actions tab in the Actions dialog to select an action or actions to add to the trigger.
Go to Choosing an Action to list all of the actions you can add to your trigger.
Related Topics:
Introducing the Synchronisation Triggers