There are several ways to Take a Screenshot in iLinux OS:
Press keys Win+3 (Take Screenshoot)
Press keys Win+4 (Take Screenshoot Of Active Window)
Press keys Win+5 (Open Screenshoot Application)
Right Click on Desktop > Screenshot (Take Screenshoot)
Right Click on Desktop > Screenshot... (Open Screenshoot Application)
From Application Easy Access > Screenshot
Open Application Flameshot for Live Editing of your Screenshot.
Clicking on Application Take Screenshot Now and Save it to Desktop.
NOTE: Clicking on the Application will save a Screenshot on your Desktop without any Prompt or Dialog.
Activate Screenshot Icon in Control Bar from:
Control Center > Look and Feel > Control Bar > System Icons > Screenshot > On
NOTE: Clicking on the Icon will save a Screenshot on your Desktop without any Prompt or Dialog. You can have the same result if you pin the Application on your Dock.