left-click = page up / page down
middle-click = scroll to clicked location
right-click = no action (except in QT where you get a neat context menu).
In GTK3 they have changed it to work like this:
left-click = scroll to clicked location
middle-click = no action
right-click = page up / page down
This is a real pain when you have both GTK2 and GTK3 apps. But you can restore the traditional behaviour by putting this in ~/.config/gtk-3.0/settings.ini
Code: Select all
[Settings]
gtk-primary-button-warps-slider = 0
A pity you can't get the QT behaviour in gtk