[Gtk-sharp-list] Medsphere Graph Crashes When Clicked

Adam Tauno Williams awilliam at whitemice.org
Fri Nov 21 11:02:12 EST 2008

On Thu, 2008-11-20 at 20:03 -0500, Adam Tauno Williams wrote:
> I have an app creating a graph using Medsphere.  The graph appears, at
> least the axes do, but no plot appears (although the vertical range
> appears to be what I expected.)  And it crashes if I click on the graph:
> Exception in Gtk# callback delegate
>   Note: Applications can use GLib.ExceptionManager.UnhandledException to
> handle the exception.
> System.NullReferenceException: Object reference not set to an instance
> of an object
>   at Medsphere.Widgets.HistogramPlot.GetPlotPoint (TreeIter iter,
> System.Int32& x, System.Int32& y) [0x00000] 
>   at Medsphere.Widgets.HistogramPlot.GetGrabFo

I've cured this one; not certain how,  but I suspect it was in how I was
assigning the Axes to the model.

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