File list (Check if you may need any files):
gui\base
...\....\container.cpp
...\....\container.h
...\....\defs.h
...\....\desktop.cpp
...\....\desktop.h
...\....\file_system.cpp
...\....\file_system.h
...\....\frame.cpp
...\....\frame.h
...\....\geometry.cpp
...\....\geometry.h
...\....\keyboard.cpp
...\....\keyboard.h
...\....\memory.h
...\....\painter.cpp
...\....\painter.h
...\....\range.cpp
...\....\range.h
...\....\SCsub
...\....\skin.cpp
...\....\skin.h
...\....\style_box.cpp
...\....\style_box.h
...\....\timer.cpp
...\....\timer.h
...\....\widget.cpp
...\....\widget.h
...\....\window.cpp
...\....\window.h
...\bundles
...\.......\color_picker.cpp
...\.......\color_picker.h
...\.......\combo_box.cpp
...\.......\combo_box.h
...\.......\directory_chooser.cpp
...\.......\directory_chooser.h
...\.......\file_dialog.cpp
...\.......\file_dialog.h
...\.......\input_dialog.cpp
...\.......\input_dialog.h
...\.......\list_box.cpp
...\.......\list_box.h
...\.......\margin_group.cpp
...\.......\margin_group.h
...\.......\menu_bar.cpp
...\.......\menu_bar.h
...\.......\menu_box.cpp
...\.......\menu_box.h
...\.......\message_box.cpp
...\.......\message_box.h
...\.......\option_button.cpp
...\.......\option_button.h
...\.......\popup_menu.cpp
...\.......\popup_menu.h
...\.......\scroll_box.cpp
...\.......\scroll_box.h
...\.......\SCsub
...\.......\spin_box.cpp
...\.......\spin_box.h
...\.......\tab_box.cpp
...\.......\tab_box.h
...\.......\window_box.cpp
...\.......\window_box.h
...\containers
...\..........\box_container.cpp
...\..........\box_container.h
...\..........\center_container.cpp
...\..........\center_container.h
...\..........\fixed_container.cpp
...\..........\fixed_container.h
...\..........\grid_container.cpp
...\..........\grid_container.h
...\..........\scroll_container.cpp
...\..........\scroll_container.h
...\..........\SCsub
...\..........\stack_container.cpp
...\..........\stack_container.h
...\drivers
...\.......\default_font.inc
...\.......\desktop_sdl.cpp
...\.......\desktop_sdl.h
...\.......\file_system_dirent.cpp
...\.......\file_system_dirent.h
...\.......\file_system_windows.cpp
...\.......\file_system_windows.h
...\.......\keycodes_sdl.cpp
...\.......\keycodes_sdl.h
...\.......\painter_sdl.cpp
...\.......\painter_sdl.h
...\.......\SCsub
...\.......\timer_sdl.cpp
...\.......\timer_sdl.h
...\SCsub
...\signals
...\.......\SCsub
...\.......\signals.cpp
...\.......\signals.h
...\.......\signals.h.in
...\string