A generic error occurred in GDI+

Question

Using .NET 1.1

The following API Graphics::DrawLine Method (Pen, Point, Point) throws a System.Runtime.InteropServices.ExternalException with message "A generic error occurred in GDI+".

This occurs inside a loop and it happens on the 6th iteration of the loop. The input parameter is point1.x=422 and point1.y=5103, point2.x=442 and point2.y = 5103.

This is the first time this error has occured in this application. The application had been running for 3 days when it happend (if that matters).

The process in question is using roughly 800 handles, so I do not think that is the problem.

I assume a problem occurs within the GDI+ but how I am unsure howto continue debugging this problem?

I have included a call stack and exception output from windbg;
0012ee64 792f0d05 mscorwks!JIT_Throw+0x4d, calling mscorwks!RaiseTheException
0012eea4 792f0cce mscorwks!JIT_Throw+0x16, calling mscorwks!LazyMachState::captureState
0012eed0 7b518150 (MethodDesc 0x7b59de60 +0x90 System.Drawing.Graphics.CheckErrorStatus), calling mscorwks!JIT_Throw
0012eee8 7b5904b8  (stub for System.Drawing.SafeNativeMethods.GetLastError), calling 0732a0f8
0012eef0 7b518117 (MethodDesc 0x7b59de60 +0x57 System.Drawing.Graphics.CheckErrorStatus), calling ntdll!RtlGetLastWin32Error
0012eef4 7b594810  (stub for System.Drawing.SafeNativeMethods.GdipDrawLineI), calling 01fc286c
0012eef8 7b51960d (MethodDesc 0x7b59e9e0 +0x7d System.Drawing.Graphics.DrawLine), calling 7b59480b (MethodDesc 0x7b594810 System.Drawing.SafeNativeMethods.GdipDrawLineI)
0012ef10 7b519617 (MethodDesc 0x7b59e9e0 +0x87 System.Drawing.Graphics.DrawLine), calling 7b59de5b (MethodDesc 0x7b59de60 System.Drawing.Graphics.CheckErrorStatus)
0012ef3c 7b537576 (MethodDesc 0x7b59e9f0 +0x16 System.Drawing.Graphics.DrawLine), calling 7b59e9db (MethodDesc 0x7b59e9e0 System.Drawing.Graphics.DrawLine)
0012ef50 0ef1d63c (MethodDesc 0x1f55650 +0x6d4 MS.View.ViewAxis.DrawVerticalAxisTicks), calling 7b59e9eb (MethodDesc 0x7b59e9f0 System.Drawing.Graphics.DrawLine)
0012ef8c 4ec9e417 GdiPlus!GdipDrawLine+0xc1, calling GdiPlus!GpGraphics::DrawLine
0012f0b8 0ef1b2f5 (MethodDesc 0x1f563d8 +0x1cd MS.View.ViewGraph.Draw), calling (MethodDesc 0x1f55650 MS.View.ViewAxis.DrawVerticalAxisTicks)
0012f10c 09b861d1 (MethodDesc 0x1f5c100 +0x19 MS.View.ViewCurve.set_CurveColor), calling mscorwks!JIT_UP_ByRefWriteBarrier
0012f11c 0ef1b074 (MethodDesc 0x1f57050 +0x184 MS.View.Graph.Draw), calling (MethodDesc 0x1f563d8 MS.View.ViewGraph.Draw)
0012f18c 0ef19316 (MethodDesc 0xe29f0a8 +0x4c6 MS.View.View.Draw)


0:014> !dumpobj 07692190
Name: System.Runtime.InteropServices.ExternalException
MethodTable 0x79bc806c
EEClass 0x79bc80ec
Size 64(0x40) bytes
mdToken: 020002d3  (c:\windows\microsoft.net\framework\v1.1.4322\mscorlib.dll)
FieldDesc*: 00000000
      MT    Field   Offset                 Type       Attr    Value Name
79b947ac  400001d        4                CLASS   instance 00000000 _className
79b947ac  400001e        8                CLASS   instance 00000000 _exceptionMethod
79b947ac  400001f        c                CLASS   instance 00000000 _exceptionMethodString
79b947ac  4000020       10                CLASS   instance 076927d4 _message
79b947ac  4000021       14                CLASS   instance 00000000 _innerException
79b947ac  4000022       18                CLASS   instance 00000000 _helpURL
79b947ac  4000023       1c                CLASS   instance 07692828 _stackTrace
79b947ac  4000024       20                CLASS   instance 00000000 _stackTraceString
79b947ac  4000025       24                CLASS   instance 00000000 _remoteStackTraceString
79b947ac  4000026       2c         System.Int32   instance        0 _remoteStackIndex
79b947ac  4000027       30         System.Int32   instance -2147467259 _HResult
79b947ac  4000028       28                CLASS   instance 00000000 _source
79b947ac  4000029       34         System.Int32   instance        0 _xptrs
79b947ac  400002a       38         System.Int32   instance -532459699 _xcode

Answer 1

Just wanted to add some more information.

While researching this issue I have seen similar problems and they mostly refer to using bitmaps and metafile.

The graphical object in this situation is based on CDC and is created using MFC.

void View.Draw()
{
    CDC* pDC = new CDC();   
    System::Drawing::Graphics* pGraphics = System::Drawing::Graphics::FromHdc(pDC.GetSafeHdc());
    graph->Print(pGraphics);
}

The only property change to the pGraphics object is that TextRenderingHint is set to AntiAlias.