Left-, Right-, and Middle-click on Clickpad

Last time, I have shared to you about how to activate right-click on clickpad by patching and recompiling the source of synaptics, at that time, synaptics version 1.4.0. Pat has upgraded the synaptics in Slackware- or Slackware64-current to version of 1.6.2. When I read the source of synaptics-1.6.2, I found that the click function of clickpad can be performed by clicking the clickpad using one, two, and three finger(s). I set the clickpad configuration for X-server, saved in /etc/X11/xorg.conf.d/clickpad.conf, as below:

Section "InputClass"
        Identifier "touchpad"
        Driver "synaptics"
        MatchDevicePath "/dev/input/event*"
        MatchIsTouchpad "on"
        Option "TapButton1" "1"
        Option "TapButton2" "2"
        Option "TapButton3" "3"
        Option "VertTwoFingerScroll" "on"
        Option "HorizTwoFingerScroll" "on"
        Option "VertEdgeScroll" "on"
        Option "HorizEdgeScroll" "on"
EndSection

By this configuration, I activate the behavior of click functions, vertical- and horizontal-scroll using two fingers, and also vertical-edge- and horizontal-edge-scroll that are very convinient for me. Click functions on my laptop can be performed such like this:

• left-click: one-finger's click
• right-click: two-finger's click
• middle-click: three-finger's click