About triggers

When a user interacts with a Desktop icon or window background, the interaction is looked up in the trigger table to derive the trigger name corresponding to that action.

For example, if a user double-clicks on an icon with mouse button 1, this is converted to the trigger name activate in the trigger table. The Desktop then executes the command:

   actions_of activate

The actions_of command searches the icon_rules clauses that match the triggered icon for the following clauses:

• trigger_action: activate

• trigger_action: s*

• trigger_action: *

The above clauses specify an exact match, a match against any static trigger, and a match against any trigger at all, respectively.

The first match found causes a new thread to be created to execute the script specified in the trigger_action clause.

See also:

• ``Threads''

• actions_of in the deskcommands(XC) manual page

• ``*'', s*, activate, icon_rules, and trigger_action in the xdt3(XC) manual page