IVsCodeDefView::IsVisible Method ()
Visual Studio 2015
Indicates whether the Code Definition tool window is visible or hidden.
Assembly: Microsoft.VisualStudio.Shell.Interop.8.0 (in Microsoft.VisualStudio.Shell.Interop.8.0.dll)
From vsshell80.idl:
HRESULT IVsCodeDefView::IsVisible();
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