want to remove notifier on my tool window closing

Renoise Tool Development
1

Is there any way to intercept the event close of my tool window and invoke a function ?

2

Hm, I don’t think there is a direct way to receive such a notification.
When window looses the focus, app_resigned_active_observable is called - but this isn’t the same thing.

However, you could monitor the state of the dialog by attaching yourself to the app_idle_observable
(assuming here that ‘dialog’ is the name of the window you have created)

renoise.tool().app_idle_observable:add_notifier(function()  
  
 if dialog and not dialog.visible then  
 -- do something...  
 end  
  
end)
3

Usually i just only use this approach, not even using the idle notifier. If i need to perform an action based on whether a dialog is visible or not, i just take care the dialog object is declared globally (thus existing when checking it out) and then simply perform the action on this very condition.

4

What should be the event, if no idle notifier is used ?

I mean, suppose I wish to remove all the attached notifiers with a certain dialog.
Where / when I should call this piece code?

  
if dialog and not dialog.visible then  
 -- do something...  
end