ArcGIS Pro 2.6 API Reference Guide
ProApp Class
Members 

ArcGIS.Desktop.Core Namespace : ProApp Class
Encapsulates the ArcGISPro application.
Syntax
public sealed class ProApp : ProBasedApp, System.Windows.Markup.IQueryAmbient  
Public NotInheritable Class ProApp 
   Inherits ProBasedApp
   Implements System.Windows.Markup.IQueryAmbient 
Inheritance Hierarchy

System.Object
   System.Windows.Threading.DispatcherObject
      System.Windows.Application
         ArcGIS.Desktop.Framework.FrameworkApplication
            ArcGIS.Desktop.Core.Licensing.LicensedApplication
               ArcGIS.Desktop.Core.ProBasedApp
                  ArcGIS.Desktop.Core.ProApp

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

ProApp Members
ArcGIS.Desktop.Core Namespace