Allows the delegate to modify the rectangle in which mouse clicks initiate divider dragging.
Original signature is '- (NSRect)splitView:(NSSplitView *)splitView effectiveRect:(NSRect)proposedEffectiveRect forDrawnRect:(NSRect)drawnRect ofDividerAtIndex:(NSInteger)dividerIndex'
Available in Mac OS X v10.5 and later.

C# | Visual Basic | Visual C++ |
public event NSSplitView..::..SplitViewEffectiveRectForDrawnRectOfDividerAtIndexEventHandler SplitViewEffectiveRectForDrawnRectOfDividerAtIndex
Public Event SplitViewEffectiveRectForDrawnRectOfDividerAtIndex As NSSplitView..::..SplitViewEffectiveRectForDrawnRectOfDividerAtIndexEventHandler
public: event NSSplitView..::..SplitViewEffectiveRectForDrawnRectOfDividerAtIndexEventHandler^ SplitViewEffectiveRectForDrawnRectOfDividerAtIndex { void add (NSSplitView..::..SplitViewEffectiveRectForDrawnRectOfDividerAtIndexEventHandler^ value); void remove (NSSplitView..::..SplitViewEffectiveRectForDrawnRectOfDividerAtIndexEventHandler^ value); }

The rectangle in which mouse clicks should initiate divider dragging. The rectangle should be expressed in the coordinate system defined by splitView.

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