5. • Widgets and Window Systems
• Window Systems
• Windows and Widgets
• Updates and Painting
• Events and Loops
6. • Widgets and Window Systems
• Window Systems
• Windows and Widgets
• Updates and Painting
• Events and Loops
7. QWS SunView
MiniGUI Metisse
Rio Microwindows
DM Fresco/Berlin
8 1/2 GEM ManaGeR
HP Windows OOHG
Xynth
MicroXwin Intuition
Y FBUI
NeWS
NeXT DPS Quartz
Wayland Twin
OPIE X