Not sure how to pass messages within components.

[sakshatshinde]

Hi guys, I am pretty new to gui programming. So I don't have strong foundations but by reading the slint docs I was able to cobble together this UI

From what I can tell by reading examples my AppWindow component can be the only component which can have a callback and pass data to-from the rust side.

I have the DownloadStatus component which I need to pass down the data to and from the rust side to update the progress bar and this component is used within the DownloadRow component for each row. I am unsure how to go about passing the messages between slint and rust since apparently by what I understand I can only do that from AppWindow.

[ogoffart]

You have two choice:

1. Use a global to hold these properties/callback and re-export this global https://releases.slint.dev/1.6.0/docs/slint/src/recipes/recipes#global-callbacks
2. Forward the properties to the room with the two-way bindings (<=>) or normal bindings.

[sakshatshinde]

For further reference #2031