Approximately 10% of the population is left handed and this large minority is often overlooked in designing user interfaces. Mice, being one-handed, are particularly problematic.
(By "left-handed mouse", I mean a mouse on the left of the keyboard with the mouse buttons "reversed" from their right-handed factory defaults. Some left-handed users suffer with right-handed mice (on the right of the keyboard) and others only move their mouse to the left of the keyboard but don't bother swapping buttons.)
George Peter Staplin 2006-03-28 I use my left hand for the mouse. I've found that pressing the mouse buttons on the mouse (now a trackball) over time causes physical problems for me. I discovered a solution that works by mapping the numpad keys to mouse buttons.
My .xinitrc has this:
xkbset m xkbset exp =m #NUMPAD 7,8,9 xmodmap -e "keycode 79 = Pointer_Button1" xmodmap -e "keycode 80 = Pointer_Button2" xmodmap -e "keycode 81 = Pointer_Button3" #KP_Add (for scrolling up) xmodmap -e "keycode 86 = Pointer_Button4" #KP_Enter (for scrolling down) xmodmap -e "keycode 108 = Pointer_Button5"
I use a custom XKB keymap to enable that to work. It's here: [L2 ] (URL is 404 on Aug 26, 2011)
To load the keymap (after the xmodmap changes above) I do this (in my .xinitrc also):
xkbcomp ~/mykeymap :0