Thanks for the very useful lbgui.h header file.
I'm very busy to study your code now, but I noticed that in the ListBox is not possible to select via the CTRL key + LMB (left mouse button) more than one Item, like Item 1 + Item 2 ...

Regards, Robert

Quote
Everything should be made as simple as possible, but not one bit simpler.
by Albert Einstein

PhysX Preview of Cloth, Fluid and Soft Body

A8.47.1P