[Mono-winforms-list] Bugzilla isn't working, so I'm posting this bug report for MWF

[Jackson Harper]

Using an ABNT-2 keyboard layout I am unable to duplicate this crash.
Also looking at the stack trace it looks like you are using an older
version of the keyboard code.  The layout code is lazy now and should
not load until you actually use the keyboard.  The stack you provided is
crashing in initialization.

Cheers,
Jackson

On Wed, 2006-06-28 at 12:03 -0300, Rafael Teixeira wrote:
> **Description of Problem:
> 
> When starting a WinForms application on a station with the ABNT2
> (Brazilian 105-Key Keyboard) layout, we have a "Array index is out of
> range." exception in <0x0043e>
> System.Windows.Forms.X11Keyboard:CreateConversionArray that kills the
> app.
> 
> **Steps to reproduce the problem:
> 1. Just run a SWF app, with that keyboard layout set on X11.
> 
> **Actual Results:
> 
> Unhandled Exception: System.TypeInitializationException: An exception
> was thrown by the type initializer for System.Windows.Forms.XplatUI --->
> System.IndexOutOfRangeException: Array index is out of range.
> in <0x0043e> System.Windows.Forms.X11Keyboard:CreateConversionArray
> (System.Windows.Forms.KeyboardLayouts layouts,
> System.Windows.Forms.KeyboardLayout layout)
> in <0x000d8> System.Windows.Forms.X11Keyboard:.ctor (IntPtr display,
> IntPtr window)
> in <0x003e9> System.Windows.Forms.XplatUIX11:SetDisplay (IntPtr
> display_handle)
> in <0x0008b> System.Windows.Forms.XplatUIX11:.ctor ()
> in <0x00040> System.Windows.Forms.XplatUIX11:GetInstance ()
> in <0x00061> System.Windows.Forms.XplatUI:.cctor ()--- End of inner
> exception stack trace ---
> 
> in <0x00000> <unknown method>
> in <0x00064> System.Windows.Forms.Form:get_CreateParams ()
> in <0x00273> System.Windows.Forms.Control:.ctor ()
> in <0x00011> System.Windows.Forms.ScrollableControl:.ctor ()
> in <0x00010> System.Windows.Forms.ContainerControl:.ctor ()
> in <0x00019> System.Windows.Forms.Form:.ctor ()
> in <0x00017> TestGUIWordCount.Form1:.ctor ()
> in (wrapper remoting-invoke-with-check) TestGUIWordCount.Form1:.ctor ()
> in <0x00018> TestGUIWordCount.Form1:Main ()
> 
> **Expected Results:
> Just showing the app form.
> 
> **How often does this happen?
> 
> Always for that keyboard layout.
> 
> **Additional Information:
> 
> This patch, deals with the exception so the app runs, and shows some
> debugging information that may lead to the correct fix:
> 
> Index: System.Windows.Forms/X11Keyboard.cs
> ===================================================================
> --- System.Windows.Forms/X11Keyboard.cs	(revision 61762)
> +++ System.Windows.Forms/X11Keyboard.cs	(working copy)
> @@ -497,14 +498,25 @@
>  							}
>  						}
>  						if (maxval >= 0) {
> -							scan = layouts.scan_table [(int) layout.ScanIndex][maxval];
> -							vkey = layouts.vkey_table [(int) layout.VKeyIndex][maxval];
> +							try {
> +								scan = layouts.scan_table [(int) layout.ScanIndex][maxval];
> +								vkey = layouts.vkey_table [(int) layout.VKeyIndex][maxval];
> +							} catch (Exception e) {
> +								Console.WriteLine("Ignoring invalid indexes '{0}' '{1}'
> '{2}'", (int) layout.ScanIndex, (int) layout.VKeyIndex, maxval);
> +							
> +								scan = 0;
> +								vkey = 0;
> +							}
>  						}
>  						
>  					}
>  				}
> -				keyc2vkey [e2.KeyEvent.keycode] = vkey;
> -				keyc2scan [e2.KeyEvent.keycode] = scan;
> +				if (e2.KeyEvent.keycode < 0 || e2.KeyEvent.keycode > 255)
> +					Console.WriteLine("Ignoring invalid keycode found '{0}'",
> e2.KeyEvent.keycode);
> +				else {
> +					keyc2vkey [e2.KeyEvent.keycode] = vkey;
> +					keyc2scan [e2.KeyEvent.keycode] = scan;
> +				}
>  			}
> 
>