Define and bind user events with RibbonBar items – PB Docs 2021

The ribbon item controls have no events, you should define a
number of user events accordingly, move the scripts from the original
menu events to the user events, and then bind the user events with the
corresponding ribbon item control.

The ribbon item controls support the following user
events:

When defining a user event for the ribbon control, make sure the
argument (quantities and types) of the event is properly defined
according to the requirement of the ribbon control. If the number of
arguments or the argument type does not match with the requirement of
the ribbon control, the event will not be triggered.

For example, in the demo application, we want to create and bind
the clicked user event with the Order View large button. The
RibbonLargeButtonItem control requires that the clicked user event
have a long-type argument and return no value. Therefore, in the
rbb_1 RibbonBar control, we create an event
with its name as ue_orderview, argument name as
al_handle, argument type as
long, and the following script:

And then we bind the ue_orderview user
event with the clicked event of the Order View large button using this
script:

You can also bind the ue_orderview user
event with the clicked event of the Order View large button using the
XML file:

Different ribbon controls require different arguments and types
for the user event. For details, see the corresponding user
events:

Clicked in PowerScript Reference

Selected in PowerScript Reference

Modified in PowerScript Reference

SelectionChanged in PowerScript Reference