A window in NOV UI for .NET is a painting surface, that can receive native user input and that has a peer, which is native for the specific integration platform.
Windows Gallery
Top Level Window
A top level window is associated with a native for the integration platform top-level window and as such, helps you popup NOV content in a native for the integration platform way.
Top Level Window Control
A top level window is associated with a native for the integration platform top-level window and as such, helps you popup NOV content in a native for the integration platform way.