net40 
namespace System.Windows.Automation.Peers
{
    public class TabItemWrapperAutomationPeer : FrameworkElementAutomationPeer
    {
        protected override bool IsOffscreenCore();
    }
}
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Reference this API
.NET Framework
4.0
Information specific to net40
Assembly

PresentationFramework , Version=4.0.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs to set <UseWPF>True</UseWPF>.

Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API