Is creating / removing context menus dynamically possible ?

I'm not talking about having menu with dynamic entries, but registering/unregistering menus.

Declaring statically a menu this way works:



I'd like to be able to do the last line dynamically so I tried:



This does not work, the menu interface (get_item_count(), etc) is never called

Any idea if this is possible ? Can there be several root context menu per plugin ?

As far as context menu commands are concerned, yes, that is definitely possible. However you cannot dynamically create instances of a contextmenu_item factories; the system will not even know that they are there. The same applies for all service factories, but there is a way to loosen the restriction that all service factories have to be defined at compile time. Since I assume this has to do with your Java bindings for the foobar2000 SDK, I will give you the details in the relevant thread.


This is entirely possible (and legal).

I think the documentation does not explicitly mention this, but the return value of contextmenu_item::get_num_items() must be constant for a given instance. So if you use service_factory_t (instead of service_factory_single_t), you can vary the number of items you provide at runtime. You then need to keep data about available items in a global variable and take a snapshot of that data in the object's constructor.