How might one change the number of inlets based on an attribute value?

[CheeseTurtle]

Hi,
I'm trying to make an object that is a cross between select~ and radiogroup. I've successfully created a select~ clone that changes the number of inlets based on an argument, and I've also created a radiogroup clone that enables the user to change a value by clicking on the corresponding radiobutton and represents the radiobuttons' state graphically.

Now it is time to put them together and I've just realized that you can't really modify the arguments of graphical objects after they have been created, as their box is no longer visible once they have been rendered in their UI form.

I've tried just calling dsp_setup() again with the new number of inlets, but that seems to add around a hundred inlets (with no apparent relationship to the attribute value). Do I need to stop relying on dsp_setup() and just manually create and remove proxies? (And if so, how and when might I go about doing that?)

Alternatively, might there be a way to completely reinstantiate the object, carrying over all struct member and attribute values except for the number of inlets?

Or is what I am trying to do impossible?

[tap]

If I've understood correctly, here is what I have done for an object whose number of inlets or outlets are defined by an argument to the object.

First, instead of having inlet<> and outlet<> members, I have a vectors of those like this:

    std::vector< std::unique_ptr<inlet<>> >		m_inlets;
    std::vector< std::unique_ptr<outlet<>> >	m_outlets;

Then in my constructor I can have a line like this in a for loop:

    m_inlets.push_back( std::make_unique<inlet<>>(this, "(anything) messages coming in") );

Is your audio object inheriting from vector_operator<>? That will be required for this to work for audio objects as sample_operator<> objects have their inputs and outputs fixed.

I hope this helps!