“Close” Mouse Shortcut

You can use either a Wheel Click or Shift+Left Click to close things in the IntelliJ IDEA user interface.

Here is a short list of what exactly can be closed:

• Editor tabs
• Tool window headers and tabs inside tool windows (yes, you can just wheel-click that blue header)
• Popups like Background Tasks — just click the popup header
• Version control annotations in the code editor

You can even stop a background process without having to hit that small red cross-shaped button — just wheel-click the progress indicator.