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Allow Hit Test on Controls in the Header
Updated on Sep 15, 2025
By default RadWindow handles the mouse events for the elements defined in its header, which excludes them from the hit testing.
This means that placing input controls like TextBox or Button won't react to the mouse events. To change this behavior, set the WindowHost.HitTestable attached property on the corresponding element to true.
Set the WindowHost.HitTestable property
XAML
<telerik:RadWindow.Header>
<TextBox Text="{Binding Text}" telerik:WindowHost.HitTestable="True" />
<telerik:RadWindow.Header>