Ctrl-0 reset
Ctrl-KeyUp / Ctrl-WheelUp zoom in
Ctrl-KeyDown / Ctrl-WheelDown zoom out
Ctrl-Drag-LeftButton move
Ctrl-Drag-RightButton set region
Alt-0 reset region
Shift-Wheel rotate view
M auto rotate
O reset view
SPACE pause stream
Shift-SPACE pause display
S step (advance one frame)
ESC exit application
I save window screenshot as png
F11 toggle show ROI and display stats
Ctrl-F3 minimize window (and inhibit display)
F3 toggle window resize mode
F10 toggle sync display
F1: help