Returns YES if the receiver’s splitter is a bar that goes across the split view. Returns NO if the splitter is a thumb on the regular background pattern. (Deprecated in Mac OS X v10.6. This functionality is no longer relevant and there is no alternative method.)
Original signature is '- (BOOL)isPaneSplitter'
Available in Mac OS X v10.0 and later.

C# | Visual Basic | Visual C++ |
[ObsoleteAttribute("Deprecated in Mac OS X v10.6. This functionality is no longer relevant and there is no alternative method.")] public virtual bool IsPaneSplitter { get; set; }
<ObsoleteAttribute("Deprecated in Mac OS X v10.6. This functionality is no longer relevant and there is no alternative method.")> _ Public Overridable Property IsPaneSplitter As Boolean Get Set
[ObsoleteAttribute(L"Deprecated in Mac OS X v10.6. This functionality is no longer relevant and there is no alternative method.")] public: virtual property bool IsPaneSplitter { bool get (); void set (bool value); }

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)