How Can I Get the Exact Dimensions of the Current Screen in a WPF Application?

Obtaining the Dimensions of the Current Screen in WPF

In WPF, developers commonly rely on SystemParameters.PrimaryScreenWidth and SystemParameters.PrimaryScreenHeight to determine the size of the primary display. However, this approach falls short for multi-screen setups where users may not be utilizing the primary screen and not all screens have the same resolution.

To address this, one must expand the scope beyond the primary screen. A possible solution involves wrapping the Screen class from System.Windows.Forms into a custom class tailored for WPF.

The WpfScreen Class

The WpfScreen class provides a comprehensive set of methods to retrieve the dimensions of the current screen, whether accessed from XAML or code. Let's delve into its capabilities:

• AllScreens(): This static method returns a collection of WpfScreen instances representing all available screens in the system.
• GetScreenFrom(Window window): Use this method to retrieve the WpfScreen object associated with a specific Window instance.
• GetScreenFrom(Point point): By providing a point within the application, this method determines which screen it belongs to and returns its corresponding WpfScreen object.
• Primary: This static property provides quick access to the WpfScreen object for the primary display.

Apart from these methods, the WpfScreen class offers the following properties:

• DeviceBounds: Represents the rectangular area of the entire screen, including the taskbar and any other elements encroaching on its boundaries.
• WorkingArea: Similar to DeviceBounds, but excludes areas occupied by the taskbar and other elements that may limit application content.
• IsPrimary: Indicates whether the screen is the primary display.
• DeviceName: Provides the device name associated with the screen.

Implementation

The implementation of WpfScreen leverages the System.Windows.Forms.Screen class to gather information about the physical displays connected to the system. It then wraps these details in a manner compatible with WPF applications, allowing for seamless integration with various aspects of the UI.

By utilizing the WpfScreen class, developers can effortlessly determine the dimensions and characteristics of the current screen, regardless of whether they use multiple displays or not. This empowers them to design adaptive UIs that cater to diverse screen resolutions and configurations.

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