If there is an image opened in the window, you may preview it in full screen. There are three ways to open it in full screen:
From the full screen window, you may right click mouse cursor to activate a popup menu like the below.
- Double click the image to preview it in full screen.
- Click the menu item "View > Full Screen".
- Click the "Full" icon on the toolbar.
Click this menu item to close the full screen.
Click this menu item to open the color dialog for choosing a color as the full screen's backcolor, and you may also set the backcolor from "Options > Other > Full Screen Back Color..."
- Default Backcolor
Click this menu item to set the full screen's backcolor to default (White).
- Show Border
Check this menu item to add a border to the image, or uncheck this to remove the border