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Tutorials > MonoGame: Fullscreen and Windowed

MonoGame: Fullscreen and Windowed

By Stephen Armstrong // March 3rd, 2020

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Change your game to display in fullscreen or windowed modes.

MonoGame starts in a normal (bordered) window by default, but it’s easy to toggle between different modes.

The following C# code will show you how to switch between fullscreen and windowed display modes in a MonoGame project.

Change windowed modes

Add the following method to your Game1:

  • void ControlWindowedMode(bool becomeBorderless)
  • {
    • Window.IsBorderless = becomeBorderless;
    • graphics.ApplyChanges();
  • }

Calling this method with a false bool will set the game to a normal (bordered) window.

Calling this method with a true bool will set the game to a borderless window.

Please note that this method will do nothing if called when the game is in fullscreen.

Toggle fullscreen

Add the following method to your Game1:

  • void ControlFullScreenMode(bool becomeFullscreen)
  • {
    • graphics.IsFullScreen = becomeFullscreen;
    • graphics.ApplyChanges();
  • }

Calling this method with a false bool will disable fullscreen.

Calling this method with a true bool will set it to fullscreen.

Testing

To test that these methods work, go to Game1.cs' Update() cycle and add the following code:

  • // Press/Hold F1 to become a borderless window.
  • if (Keyboard.GetState().IsKeyDown(Keys.F1))
  • {
    • ControlWindowedMode(true);
  • }
  • // Press/Hold F2 to become a normal window.
  • if (Keyboard.GetState().IsKeyDown(Keys.F2))
  • {
    • ControlWindowedMode(false);
  • }
  • // Press/Hold F3 to enter fullscreen.
  • if (Keyboard.GetState().IsKeyDown(Keys.F3))
  • {
    • ControlFullScreenMode(true);
  • }
  • // Press/Hold F4 to exit fullscreen.
  • if (Keyboard.GetState().IsKeyDown(Keys.F4))
  • {
    • ControlFullScreenMode(false);
  • }

Run your game and you can use the F1, F2, F3, and F4 keys to switch between windowed and fullscreen modes.


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