Callback Question in C++ Project

[roryy19]

Here is a mock situation of my problem:

• Component A is a slint file that has a callback.
• Component B is another slint file which inherits Component A.
• main.cpp calls Component B.

Question:
How does main.cpp access callbacks from Component A, which it does not have direct access to, since main.cpp only inherits Component B?

[ogoffart]

Two ways:

1. forward the callback as an explicit callback in your component B
2. use a global (which you can access in C++ with the global generated function https://docs.slint.dev/latest/docs/cpp/generated_code#global-singletons )

See also #6733 (comment)