This is the UTFT library from Henning Karlsen which was modified to support 2.8in 320x240 LCD display for Arduino MEGA 2560 from mcufriend.com. This library was tested only with: this one display: ...
text, images, buttons, checkboxes, radio buttons, sliders, custom keypads, listbox, radial controls, scrolling textbox / terminal, graphs, etc. plus extensions and ...