urgent: exception in onpaint:

[*joachim*]

I use a Fastline Series to display data. The chart is updated about every second. It all works fine, but occasionally, typically after zooming in or panning in the chart or moving the window on the desktop, I get the following error message:
object reference not set to an instance of an object.
It seems to me like a bug in TChart since it comes from the core and seems to have to do something with repainting the chart properly. Please help, since I am supposed to release my program soon!


StackTrace: " at Steema.TeeChart.Styles.Series.DrawMarksSeries(Series s, Boolean& ActiveRegion)
at Steema.TeeChart.Styles.Series.DrawSeries()
at Steema.TeeChart.Chart.InternalDraw(Graphics g)
at Steema.TeeChart.TChart.Draw(Graphics g)
at Steema.TeeChart.TChart.OnPaint(PaintEventArgs pe)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
at System.Windows.Forms.Control.WmPaint(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods+IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at ToolVision.MainForm.Main() in c:\\develop\\toolvision\\mainform.cs:line 364" string

[Narcís]

Hi *joachim*,

I haven't been able to reproduce this problem here using latest TeeChart version available at our customer download area. Could you please send us an example we can run "as-is" to reproduce the problem here? You can post your files at [url]news://www.steema.net/steema.public.attachments[/url] newsgroup.

Thanks in advance.