It's possible to build one with data structures. There may be one
from me or others on the pd forum. But it's really a pain to build.
I'm not even so worried about the pain of building, but about how you
can make something that feels good and intuitive to use given the
limited HID data you get from Pd. I mean there is no way to detect
hovering or a mouse key release. I made menu widgets that required the
user to keep the mouse key pressed while dragging, thus scrolling
through the list of available items to pick. Number boxes and sliders
work also with dragging. Nowadays, I'm starting to believe that
dragging with mouse key pressed is not an ergonomic action and I'm
going to avoid it whenever possible. Both, [jp.menu] and
[dropDownMenu], do the selection with two clicks. I think that is the
better approach.
I think there's [mousestate] or maybe something in one of the iem
libraries (?), and if I remember correctly, structs can declare if a
mouse is over them. But yes, there are very few options, and a solution
using the gui's own possibilities would surely be better.
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