trigger keyboardSwitch

Interactive trigger that defines the application-wide actions in response to the ^SWITCH_KEY action, such as loading a new keyboard translation table.

Description

The keyboardSwitch trigger defines the application-wide actions that should be taken when the user activates the trigger with the ^SWITCH_KEY request.

This trigger is generally used to load a new keyboard translation table (using the $keyboard function), for example to change from the default mode to numeric keypad mode. For example:

trigger keyboardSwitch
if ($keyboard = 'vtnum')
  $keyboard = "VT200"
  message "Default keyboard in use."
else
  $keyboard = "VTNUM"
  message "Numeric keyboard in use."
endif
end; keyboardSwitch

If it is necessary to define actions that should only apply to particular forms, the ProcScript in the keyboardSwitch trigger can include tests on $instancename. Be aware that this can make maintenance more difficult, especially when a form that is explicitly mentioned in a test is replaced by a form with a different name.