Holding and dragging mouse to select multiple buttons/cells

Is it possible to create a TogglerBar-type object in which several buttons can be selected/deselected simply by holding the mouse’s left-click button and dragging it over the buttons? Similarly to the multiple selecting option when holding control and the mouse on Windows, but without the drawing box.

It seems that, by default, TogglerBar only selects a button when the left-click button is released, but I’m unaware of any way of doing what I want. Any ideas?

Just to give some context. I’m working with cell dynamics, and I intend to make it easier to select a large group of cells in an epithelium. This is, in some sense, a follow up to a question I made before regarding a “toggleable” Voronoi Mesh.