Fullscreen Mode on macOS

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Go Up to MacOS Application Development


RAD Studio offers support for fullscreen mode in FireMonkey applications that have the macOS target platform. Fullscreen mode is available on macOS versions 10.8 (Mountain Lion) and greater.

macOS versions 10.8 and 10.9:

  • The full-screen icon appears in the upper right-hand corner.

macOS version 10.10+:

  • The full-screen icon appears in the upper left-hand corner.

On a Mac window:

  • To expand the application to fullscreen mode, click or .
  • To leave fullscreen mode, press the Esc key.

Enabling the Mac Fullscreen Icon in Your FireMonkey Application



  • The result at run time, with the fullscreen icon indicated in red:

Starting Your FireMonkey Application in Fullscreen Mode on the Mac

Programmatically Setting Fullscreen Mode for macOS Applications

You can also programmatically set the ShowFullScreenIcon and FullScreen properties using the following code:

Form1.ShowFullScreenIcon := true;  // enables the fullscreen icon in the Mac app
Form1.FullScreen := true; // starts the app in fullscreen mode on the Mac

See Also