How to Determine Active Screen Dimensions in WPF Applications?

Determining Active Screen Dimensions in WPF

In WPF applications, obtaining the dimensions of the active screen requires a slightly different approach compared to WinForms. This question addresses the need for a WPF equivalent of System.Windows.SystemParameters.WorkArea to determine the available workspace on the current monitor.

Solution:

Instead of relying on a built-in function, you can utilize the Screen.FromControl method, as suggested in the response. This method takes a Control object as an argument and returns the Screen object that represents the monitor containing that control. To apply this in WPF, you can create an extension method like the one provided in the answer.

Extension Method:

static class ExtensionsForWPF
{
    public static System.Windows.Forms.Screen GetScreen(this Window window)
    {
        return System.Windows.Forms.Screen.FromHandle(new WindowInteropHelper(window).Handle);
    }
}

By invoking this extension method on a WPF Window object, you can retrieve the corresponding System.Windows.Forms.Screen object, which allows you to access the Bounds property and obtain the dimensions of the active screen.

Usage:

Window myWindow = ...;
System.Windows.Forms.Screen activeScreen = myWindow.GetScreen();
Rectangle activeScreenBounds = activeScreen.Bounds;

This approach provides a cross-platform solution for determining the available workspace on the monitor hosting the WPF window.

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