The main pane is the large rectangular area in the middle of an application, between the upper group of bars (menubar, toolbar, ribbon), and lower group of bars (statusbar). The main pane includes its own scrollbars that conditionally appear when the content of the pane extends past its viewport. However, the main pane doesn't include any side pane or toolbox that appears next to in the application.
A screenshot of SMPlayer, a video player, playing a video featuring a bunny. Its main pane, located between a toolbar and a bar with progress bar and playback controls, displays the contents of the video. Video: LUIS GALLARDO. License: Pexels.A screenshot of PotPlayer. Observe how there is a side pane with multiple tabs and a playlist next to the main pane where the video is displayed. Video: Meenakshi Vinay Rai. License: Pexels.
![A window titled "[virtualcuriosities.com] Video by LUIS GALLARDO.mp4 - SMPlayer." Its menubar: Open, Play, Video, Audio, Subtitles, Browse, View, Options, Help. A toolbar of colorful icons. In its main pane, a bunny. Below, a progress bar with pause, stop, go back, and go forward buttons; a button to expand the window, and a speakers icon with a slider. The black statusbar displays the timestamp 00:00:03 / 00:00:20.](https://www.virtualcuriosities.com/wp-content/uploads/2025/04/smplayer-20250420.webp)
