[Mono-dev] windows.form regression with mono 2.8.1

[Ralph Leckett]

I tried this on my version of Mono with all my fixes to version 2.8
and it worked fine. My fixes were submitted to the Mono team on Oct 30
but none of it has made it to version 2.8.1 which is more my fault
than theirs. To be honest, I have forgotten all the bugs that I fixed.
I do remember that there were a lot of them.

Ralph


On 11/18/10, matteo tesser <matteo.tesser at gmail.com> wrote:
> Hello,
> I tried to run this simple program on osx 10.6 and mono 2.8.1
>
> //*****************
> using System;
> using System.Windows.Forms;
> class myform:Form
> {
>  static void Main(string[] args) {
>    Application.Run( new myform());
>  }
> }
> //**************************
>
> mono crashes showing the stack trace reported below. I think it is
> quite severe, so I posted a bug
>
> https://bugzilla.novell.com/show_bug.cgi?id=654561
>
> note that when  MONO_MWF_MAC_FORCE_X11 is set to one, it works.
>
> Thanks
> Matteo
>
> Stack Trace:
>
> Unhandled Exception: System.NullReferenceException: Object reference
> not set to an instance of an object
>  at System.Drawing.Graphics.Dispose () [0x00000] in <filename unknown>:0
>  at (wrapper remoting-invoke-with-check) System.Drawing.Graphics:Dispose ()
>  at System.Drawing.Bitmap..ctor (System.Drawing.Image original, Int32
> width, Int32 height) [0x00000] in <filename unknown>:0
>  at System.Drawing.Bitmap..ctor (System.Drawing.Image original)
> [0x00000] in <filename unknown>:0
>  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap:.ctor
> (System.Drawing.Image)
>  at System.Windows.Forms.Cursor.ToBitmap (Boolean xor, Boolean
> transparent) [0x00000] in <filename unknown>:0
>  at System.Windows.Forms.Cursor.CreateCursor (System.IO.Stream
> stream) [0x00000] in <filename unknown>:0
>  at System.Windows.Forms.Cursor..ctor (System.Type type,
> System.String resource) [0x00000] in <filename unknown>:0
>  at System.Windows.Forms.Cursors.get_SizeNWSE () [0x00000] in
> <filename unknown>:0
>  at System.Windows.Forms.SizeGrip..ctor (System.Windows.Forms.Control
> CapturedControl) [0x00000] in <filename unknown>:0
>  at (wrapper remoting-invoke-with-check)
> System.Windows.Forms.SizeGrip:.ctor (System.Windows.Forms.Control)
>  at System.Windows.Forms.ScrollableControl.CreateScrollbars ()
> [0x00000] in <filename unknown>:0
>  at System.Windows.Forms.ScrollableControl..ctor () [0x00000] in
> <filename unknown>:0
>  at System.Windows.Forms.ContainerControl..ctor () [0x00000] in
> <filename unknown>:0
>  at System.Windows.Forms.Form..ctor () [0x00000] in <filename unknown>:0
>  at myform..ctor () [0x00000] in <filename unknown>:0
>  at (wrapper remoting-invoke-with-check) myform:.ctor ()
>  at myform.Main (System.String[] args) [0x00000] in <filename unknown>:0
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