I have a project where one program that's SDL2 only will react to mouse wheel events when hovered but not focused, however my ImGUI+SDL2 program does not react to the mouse-wheel events when not focused but has a mouse-over.

Ubuntu system running Fluxbox with "Click to focus" window behaviour.

Is it possible for ImGui to react to the mousewheel events in this mouse-over / non-focused situation?

I understand that it's an ambiguous situation, as what's to say that a focused program elsewhere in the WM shouldn't be receiving the mouse wheel events instead?