Returns whether a new marker can be added.
Original signature is '- (BOOL)rulerView:(NSRulerView *)aRulerView shouldAddMarker:(NSRulerMarker *)aMarker'
Available in Mac OS X v10.0 and later.

C# | Visual Basic | Visual C++ |
public virtual bool RulerViewShouldAddMarker( NSRulerView aRulerView, NSRulerMarker aMarker )
Public Overridable Function RulerViewShouldAddMarker ( _ aRulerView As NSRulerView, _ aMarker As NSRulerMarker _ ) As Boolean
public: virtual bool RulerViewShouldAddMarker( NSRulerView^ aRulerView, NSRulerMarker^ aMarker )

- aRulerView (NSRulerView)
- The ruler view sending the message.
- aMarker (NSRulerMarker)
- The marker to be added.

YES if aMarker can be added, NO otherwise.

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