Manipulating Windows

Using Window-Interaction Triggers

You can use four window-interaction triggers to provide extra functionality whenever a user interacts with a window. These triggers should be defined at the form level.

Using Window-Interaction Triggers

The common uses for these triggers are as follows:

Trigger	Use
When-Window-Activated	Captures initial settings of window properties; enforces navigation to a particular item whenever the window is activated.
When-Window-Deactivated	Deactivates a window.
When-Window-Closed	Closes a window programmatically.
When-Window-Resized	Maintains visual standards; captures window properties.

Keeping Track of the Triggered Window

The SYSTEM.EVENT_WINDOW system variable contains the name of the last window for which a window-interaction trigger fired. You can use this system variable to perform different actions for different windows in your window-interaction triggers.

Trigger	Characteristic
When-Window-Activated	Fires when a window is made the active window. (Note that window activation can occur independently of navigation).
When-Window-Deactivated	Fires when a user deactivates a window by setting the input focus to another window.
When-Window-Closed	Fires when a user closes a window by using a window-manager-specific Close command.
When-Window-Resized	Fires when a window is resized, either by the user or through a trigger. (It also fires at form startup, but not when a window is made into an icon).