Requests permission for aRulerView to add aMarker, an NSRulerMarker being dragged onto the ruler by the user.
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 delegate bool RulerViewShouldAddMarkerEventHandler( NSRulerView aRulerView, NSRulerMarker aMarker )
Public Delegate Function RulerViewShouldAddMarkerEventHandler ( _ aRulerView As NSRulerView, _ aMarker As NSRulerMarker _ ) As Boolean
public delegate bool RulerViewShouldAddMarkerEventHandler( NSRulerView^ aRulerView, NSRulerMarker^ aMarker )

- aRulerView (NSRulerView)
- MISSING
- aMarker (NSRulerMarker)
- MISSING


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