How to turn on the on-screen keyboard in KDE 4
This page explains step-by-step how to turn on and customise the on-screen keyboard in KDE 4 for Linux. An on-screen keyboard may be the best way to input information if you have a physical condition that makes using a keyboard difficult but you are able to use a mouse.
An on-screen keyboard looks just like a picture of a keyboard on the screen. Note that the on-screen keyboard in KDE 4 is very basic application, with less sophistication than the corresponding Gnome version. Letters can be selected from the keyboard only by using a mouse, not other types of pointing devices. You are also required to click the various keys - there are no auto-click or scanning options as standard.
Click on the 'K' icon on the menu bar, or press Alt + F1, to open 'Kickoff' as shown in Fig 1.
Click on 'Applications' and then 'Utilities', or use the arrow keys to select these and then press Enter.
To open the Kvkbd application, click on 'Virtual Keyboard' in the 'Utilities' submenu, or use the down arrow to select it and then press Enter. This will launch the Kvkbd keyboard, shown in Fig 2.
You can show or hide the number pad (shown in Fig 3) by clicking the green arrow to the right of the main keyboard.
The keyboard can be resized by clicking and dragging the red hatched area at the bottom right of the keyboard.
You can change the keyboard settings by clicking the 'Spanner' button, located above the green arrow.
To minimise the keyboard to the taskbar, click on the 'Close' icon (the white cross on a red circle).