A status bar is an area at the bottom of a primary window that displays information about the current window's state, background tasks, or other contextual information. The status bar ‘frames’ the form and, thereby, has a white-space function which is part of the operating system or desktop environment branding. Because secondary forms like dialog boxes must not use a status bar it denotes a form as primary window too.
KDE applications should not use a conventional status bar by default to maximize the space for content .
Is this the right control
- Omit the status bar in the main window to maximize vertical space for content.
- Do not show meaningless information like 'Ready'.
- Use a floating panel or tool-tips for short-term status information like full length text of links.
- Move controls to the toolbar.
- Do not display a status bar in secondary or internal windows.
- If a status bar is really necessary in your application consider to use a toolbar with all customization features.
- Do not use the status bars or any kind of replacement for crucial information. Users should never have to know what is in the status bar.
- Do not use the status bar or any kind of replacement to display advisory messages in place of standard tool-tips.
- Keep the status information plain; e.g. do not add icons.
- ↑ http://user-prompt.com/what-is-a-status-bar-good-for/