(App Designer) change callback of item / add new callback to existing item

Hi folks,

I have programmed a GUI and added some items to a callback by right clicking them and select existing callback. Now I want to change the callback for some of the items but I'm not able to change the callback. If I right click the item all it shows is 'Go to XYCallback'. Is there a way to change the callback of the existing item or add a new one for it?

Thanks in advance.

Answer 1

[Mario Malic]

Hello,

Each component has its own callback, and only thing that you need to do to change it is to rename it, everything related to its name will be changed automatically.

If you want to delete the callback, find it in Code Browser section (top left) and under Callbacks, delete it. I don't think it's possible to have multiple callbacks so you'll have to embed your code into one.

Answer edit:

Click the component, on the right-hand side in a Component browser, in the section Callbacks, just below the list of components, there's ValueChangedFcn dropdown menu where you can select/remove or create another callback.

[Dominik Müller]

That's not the problem.I guess my description of the problem is not the best.

I'll try again.

I created a callback and right clicked some items of my GUI and under 'callbacks' I've chosen 'select existing..'. So I 'connected' the items to the callback. But now I want to change the callback for some of my items, they should no langer call the already existing callback. They should call another one. But I've found no way to remove the 'connection' or 'reconnect' the items to an other callback.

And I don't want to delete the existing items/callbacks. I only want to change the callback the itmes are connected with.

[Mario Malic]

Click the component, on the right-hand side in a Component browser, in the section Callbacks, just below the list of components, there's ValueChangedFcn dropdown menu where you can select/remove or create another callback.

[Dominik Müller]

Ah okay, got it.

Didn't know it' possible to set/connect/change callbacks for items via this menu.

THANK YOU!

[Mario Malic]

You're welcome. I also had the same issue once, until one of other members pointed it out.