ThemedWindow.RoundCorners Property

Gets or sets whether ThemedWindow instances and descendants in your application have rounded corners.

Namespace: DevExpress.Xpf.Core

Assembly: DevExpress.Xpf.Core.v25.1.dll

NuGet Package: DevExpress.Wpf.Core

Declaration

C#

public static bool RoundCorners { get; set; }

VB.NET

Public Shared Property RoundCorners As Boolean

Property Value

Type	Description
Boolean	true to round ThemedWindow corners; otherwise false.

Remarks

The figure below illustrates a window with rounded corners:

The following code sample rounds ThemedWindow corners:

App.xaml.cs

using DevExpress.Xpf.Core;
//...

public partial class App {
    protected override void OnStartup(StartupEventArgs e) {
        base.OnStartup(e);
        ThemedWindow.RoundCorners = true;  
    }
}

App.xaml.vb

Imports DevExpress.Xpf.Core

Public Partial Class App
    Protected Overrides Sub OnStartup(ByVal e As StartupEventArgs)
        MyBase.OnStartup(e)
        ThemedWindow.RoundCorners = True
    End Sub
End Class

You can use the RoundCorners and ThemedWindow.UseNativeWindow properties to specify whether corners of your application’s windows are rounded.

The following table describes whether your application’s corners are rounded depending on your Windows version, applied DevExpress Theme, and the UseNativeWindow and RoundCorners property values:

Windows Version	Applied DevExpress Theme	UseNativeWindow		RoundCorners
		true	false	true	false
Windows 11	Win11Light/Win11Dark
	non-Win11Light/Win11Dark
Windows 10 and earlier	Win11Light/Win11Dark	[1]
	non-Win11Light/Win11Dark

Limitation

The RoundCorners property has no effect when the EnableAcrylic property is true.

Footnotes

1. Your application’s appearance will be broken.