EO.Wpf can extend theme support to non-EO controls. There are two ways to extend theme support to controls not provided by EO.Wpf:

• Register the control with EO.Wpf.ThemeManager; - OR -
• Monitor EO.Wpf theme/skin changes, then apply styles based on the current theme or skin of an EO.Wpf control;

This topic covers the first method. The second method is covered here.

In order for a control to support themes, you must first declare and register theme styles following steps described here, then register the control with EO.Wpf ThemeManager with the following code:

//Register a control with EO.Wpf.ThemeManager
ThemeManager.Register(control);

'Register a control with EO.Wpf.ThemeManager
ThemeManager.Register(control)

It is recommended that you call this code either inside the FrameworkElement's Initialized event handler, or overrides its OnInitialized method. For example:

public class CustomControl: BaseControl
{
    ....
    
    protected override void OnInitialized(EventArgs e)
    {
        //Register this control with EO.Wpf ThemeManager
        ThemeManager.Register(this);
        
        base.OnInitialized(e);
    }
    
    ....
}

Public Class CustomControl
    Inherits BaseControl    
    ....
    
    Protected Overrides Sub OnInitialized(e As EventArgs)
        'Register this control with EO.Wpf theme manager
        ThemeManager.Register(Me)

        MyBase.OnInitialized(e)
    End Sub
    
    ....
End Class

Once the control is registered with the ThemeManager, the ThemeManager will automatically switches style for the control based on the value of ThemeManager.ThemeName or ThemeManager.SkinName attached property.