UKUI Desktop Environment
Overview
The desktop environment is the basis for GUI-based operations. UKUI provides multiple functions including taskbar and start menu. The home screen is shown in figure below.
Desktop
Desktop Icons
The Computer, Recycle Bin and Home folder icons are displayed on the desktop by default. Double click an icon to open the page. The functions are shown in table below.
| Icon | Description |
|---|---|
 | Computer: shows the drives and hardwares connected to the machine. |
 | Recycle Bin: shows documents that have been deleted. |
 | Personal: shows the user's home directory. |
Right-clicking "Computer" and selecting "Properties" shows the current system version, kernel version, and other related information.
Context Menu
Right-click on the desktop blank area to display the context menu, as shown in figure below.
Some of the options are described in table below.
| Option | Description |
|---|---|
| New | Creates folders, documents, and WPS files. |
| View type | Displays small, medium, large, or super large icons. |
| Sort by | Sorts files by name, type, size, or date of modification. |
Taskbar
Basic Function
The taskbar is located at the bottom and includes the start menu, multi view switch, file browser, Firefox, WPS, and tray.
| Component | Description |
|---|---|
 | Start menu: Open the start menu to find applications and files. |
 | Multi view switch: Operate in multiple workspaces. |
 | File browser: Browse and manage documents in the system. |
 | Firefox: Access the Internet conveniently and safely. |
 | WPS: Perform the most commonly used office operations to process text, tables, and presentations. |
| Window Display Area | The blank area in the middle of the task bar displays the running programs or opened documents, and allows you to close and top the window. |
 | Tray: Change settings for sound, Kylin Weather, internet connection, input method, notification center, date, and night mode. |
| Show Desktop | The button on the far right is used to minimize all windows on the desktop or restore the windows. |
Multi View Switch
Click the icon "
" on the taskbar to enter the interface shown in figure below, and select the operation area that users need to work on at the moment in multiple work areas.
Preview Window
Users move the mouse over the app icon in the taskbar, and then a small preview window will be shown if this app has already been opened.
Hover over the specified window as shown below for hover state, the window will be slightly fuzzy glass effect (left), the rest of the window as default Status (right).
Users can close the application by right-clicking on the app icon in the taskbar.
Sidebar
The sidebar is located at the right of the entire desktop. Click the icon "
" in the taskbar tray menu to open the storage menu, and click the icon "
" in Sidebar to pop up the sidebar as shown in figure below.
The sidebar consists of two parts: Notification Center, Clipboard and Widget.
Notification Center
Notification center will display a list of recent important and newest information.
Select "Clear" in the upper right corner to clear the list of information; Select "Setting" in the upper right corner to go to the notification settings in the control center, and users can set which applications can show information and the quantity of information.
Workspace at right side can be set to fold by applications.
Icon "
" at the top right corner of the sidebar can store unimportant information. When the messages are more than 999+, it will be shown as the form of 
which means limitless.
Clipboard
Clipboard can save the contents those were recently selected to copy or cut, and users can operate them by using the icons in Table.
Clicking "
", users can edit the the contents of the clipboard.
| Icon | Description | Icon | Description |
|---|---|---|---|
 | Copy the content |  | Edit the content |
 | Delete the content |
The second label of the clipboard is the small plug-in that contains alarm clock, sticky notes, and user feedback.
Tray Menu
Storage Menu
Click "
" at the tray menu to open the storage menu.
It contains Kylin Weather, Input Method, Bluetooth, USB, etc.
Input Method
The taskbar input method defaults to Sogou input method. Use the shortcut key "Ctrl+Space" to switch it out, and the "Shift" key to switch between Chinese and English modes.
USB
When a USB flash drive is inserted, the dat inside is automatically read.
Click "
" to open the window as shown in figure below.
When users need to umount the USB, please click the icon "
".
Power Supply
Click the icon "
":
When no power supply is detected.
When power supply is detected.
Users right-click the icon "
" of power manager to open the power setting menu.
It provides two setting options: adjust screen brightness, and set power and sleep.
If the power manager pops up a"low battery" window, users can click to turn on the power save mode, and the power manager will set the machine to run in this mode immediately.
Network
Users can choose wired or wireless network connections by clicking the icon "
" of network manager.
| Icon | Description | Icon | Description |
|---|---|---|---|
 | Connected |  | Unconnected |
 | Connection limited |  | Locked |
 | Connecting |  | Wifi connected |
 | Wifi unconnected |  | Wifi connection limited |
 | Wifi locked |  | Wifi connecting |
Wired Network In the wired network connection interface, click on the wired network plan to expand. Details of the network.
Wireless Network Click the switch button in the upper right corner to turn on the wireless network connection, and select the WiFi from the list of available wireless networks. Enter the password to access the Internet.
Network Setting Right-click the icon "
" of network manager to pop up the setting menu.
Click network setting to go to the setting window immediately.
Volume
Click the icon "
" to open the volume window, and there provides three modes.
Mini Mode It only displays the volume of the speaker.
According to Equipment It contains input equipments and output equipments.
According to Application It contains system volume and other applications' volume.
Calendar
Click the date&time on the taskbar to open the calendar window.
Users can view the day's information by filtering the year, month, day. The date will be displayed in large letters, with the time, the week, the festival,and the lunar calendar. Taboos can be seen by checking.
Night Mode
Click the icon "
" on the Taskbar and then the system changes to the night mode.
Advanced Setting
Right-click the Taskbar to open the menu.
Users can set the layout of taskbar in "Taskbar Settings".
Window
Window Manager
The functions provided as shown in Table.
| Function | Description |
|---|---|
| Title Bar | Show the title name of current window |
| Minimize/Maximize/Close | The three icon buttons at the right of the title bar correspond to minimize, maximize and close respectively |
| Side Sliding | Users can scroll up and down to view the page by the slider at the right of the window |
| Stack | Allow overlap among windows |
| Drag and Drop | Long press the left mouse button at the title bar to move the window to any position |
| Resize | Move the mouse to the corner of the window and long press the left button to resize the window |
Window Switch
There are three ways to switch windows:
Click the window title on the Taskbar.
Click the different window at the desktop.
Use shortcut keys < Alt > + < Tab >.
Start Menu
Basic Function
Click the button to open the "Start Menu".
It provides sliding bar.
Category Menu at right side
When the mouse is over the right side of the start menu, it will appear a pre-expanded cue bar. Clicking to expand, and then three categories are showing at the right side by default: "Common Software", "Alphabetical Category", and "Functional category".
All Software: List all software, recently used software will be displayed on the top of this page.
Alphabetical Category: List all softwares by first letter.
Functional category: List all softwares by their functions.
Users can click the button at top right corner to view full-screen menu mode.
Function Button at right side
It provides User Avatar, Computer, Control Center and Shutdown four options.
User Avatar
Click "
" to view user's information.
Computer
Click "
" to open personal home folder
Control Center
Click "
" to go to the control center.
Shutdown
Lock Screen
When users do not need to use the computer temporarily, the lock screen can be selected (without affecting the current running state of the system) to prevent misoperations. And input the password to re-enter the system.
The system will automatically lock the screen after a period of idle time by default.
Switch Users & Log Out
When users want to select another user to log in using the computer, users can select "Log out" or "Switch user".
At this point, the system will close all running applications; Therefore, please save the current jobs before performing this action.
Shutdown & Reboot
There are two ways:
1)"Start Menu" > "Power" > "Shutdown"
It will pop up a dialog box, and users can choose shutdown or reboot as needed.
2)"Start Menu" > right side menu of the "Shutdown" button > "Shutdown"/"Reboot"
The system will shutdown or reboot immediately without popping up the dialog box.
Advanced Setting
Right-clicking Start Menu, it provides lock screen, switch user, log out, reboot, and shutdown five shortcut options.
Applications
Users can search apps in the search box by key words. As shown in figure below, the result will show up automatically with the input.
Right-clicking one app in the Start Menu, the right-click menu popping up.
The options are described in table below.
| Option | Description |
|---|---|
| Attach to "All Software" | Add the selected software to the top of the list of All Software |
| Attach to Taskbar | Generate icon for the application on the Taskbar |
| Add to Desktop Shortcut | Generate shortcut icon for the application on the desktop |
| Uninstall | Remove the application |
FAQ
I Cannot Login to the System After Locking the Screen
Switch to character terminal by pressing Ctrl + Alt + F2.
Input the user-name and passwd to login to the system.
Do "sudo rm -rf ~/.Xauthority".
Switch to graphical interface by pressing Ctrl + Alt + F1, and input the password.
Appendix
Shortcut Key
| Shortcut Key | Function |
|---|---|
| F5 | Refresh the desktop |
| F1 | Open the user-guide |
| Alt + Tab | Switch the window |
| win | Open the Start Menu |
| Ctrl + Alt + L | Lock Screen |
| Ctrl + Alt + Delete | Log out |
