User manual
How to install matchbox-keyboard                                               2016-08-31 
6, create an icon on the taskbar (Note that in this step, must be "pi" user privileges, 
if you use administrator privileges, will not find the file) 
nano ~/.config/lxpanel/LXDE-pi/panels/panel 
7, find the resembles similar to the following command (default content may be different in 
different Raspberry Pi versions) 
Plugin { 
type=launchbar 
Config { 
 Button { 
 id=/usr/share/applications/lxde-x-www-browser.desktop 
 } 
 Button { 
 id=/usr/share/raspi-ui-overrides/applications/pcmanfm.desktop 
 } 
 Button { 
 id=/usr/share/raspi-ui-overrides/applications/lxterminal.desktop 
 } 
 Button { 
 id=/usr/share/applications/wolfram-mathematica.desktop 
 } 
 Button { 
 id=/usr/share/applications/wolfram-language.desktop 
 } 
 } 
} 
Add the following code to add a icon item 
 Button { 
id=toggle-matchbox-keyboard.desktop 
 } 
After modifying, would show as below: 




