How can I capture an arbitrary amount of results?

[xR3b0rn]

I'm aware of the storeResultsTo function. However, the issue with this function is that it only accepts a variadic number of arguments, which I must determine at runtime. I want to detect the number of result parameters dynamically and store them in a container, such as std::vector<std::variant<...>>. How can I achieve this?

[sangelovic]

Why do you need that? Can you provide more details on your use case? In D-Bus (just like in C++ or any other statically-typed language), methods are statically typed, i.e. the types or parameters as well as the types of return values are known at compile time. And when calling a D-Bus method (just like calling a C++ function), its signature must be known and adhered to. Calling a method/function without knowing what it returns is not possible.

For the sake of completeness, you can use the basic API level -- sending and receiving messages, and the peekType() member function of Message enables you to determine at run time the type of the next element serialized in the message. But this may make your code very cumbersome.

[xR3b0rn]

I figured that out.

I'm using introspection to detect methods of objects, but can't call them properly with the high level api.

Introspection is a very common pattern.