[Mono-winforms-list] Winform exception while executing on settopbox, Please help

[Prashanth Mn]

> Hi,
>
> i'm using Mono to bring up sample form using Mono on settobbox (broadcom
> chipset) .  We could able to compile the sample code and also all the Mono
> dependent libraries including libgdiplus, cairo, X11, Pixman etc using
> cross toolchain provided by Broadcom.  After cross compiling all the
> required libraries, when we tried to bring up the sample form, we are
> getting an exception related to display not being set.  I've exported the
> DISPLAY=0.0  and even then i'm getting the error.  Any inputs to display
> this windows form on to the TV will be a great help.  Do we need to
> integrate any Broadcom driver to libgdiplus.so so that it can render on TV?
>
> On Ubuntu LINUX, i'm able to bring up this windows form without any
> issues.
>
> Below is few excerpt log of the exception.
>
> # echo $DISPLAY
>
>
> 0.0
>


>  Unhandled Exception:
>
>> System.TypeInitializationException: An exception was thrown by the type
>> initializer for System.Windows.Forms.WindowsFormsSynchronizationContext
>> ---> System.TypeInitializationException: An exception was thrown by the
>> type initializer for System.Windows.Forms.XplatUI --->
>> System.ArgumentNullException: Could not open display (X-Server required.
>> Check you DISPLAY environment variable)
>> Parameter name: Display
>>   at System.Windows.Forms.XplatUIX11.SetDisplay (IntPtr display_handle)
>> [0x00000] in <filename unknown>:0
>>   at System.Windows.Forms.XplatUIX11..ctor () [0x00000] in <filename
>> unknown>:0
>>   at System.Windows.Forms.XplatUIX11.GetInstance () [0x00000] in
>> <filename unknown>:0
>>   at System.Windows.Forms.XplatUI..cctor () [0x00000] in <filename
>> unknown>:0
>>   --- End of inner exception stack trace ---
>>   at System.Windows.Forms.Theme.get_MenuAccessKeysUnderlined () [0x00000]
>> in <filename unknown>:0
>>   at System.Windows.Forms.SystemInformation.get_MenuAccessKeysUnderlined
>> () [0x00000] in <filename unknown>:0
>>   at System.Windows.Forms.Control..ctor () [0x00000] in <filename
>> unknown>:0
>>   at (wrapper remoting-invoke-with-check)
>> System.Windows.Forms.Control:.ctor ()
>>   at System.Windows.Forms.WindowsFormsSynchronizationContext..cctor ()
>> [0x00000] in <filename unknown>:0
>>   --- End of inner exception stack trace ---
>>   at System.Windows.Forms.Control..ctor () [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 HelloWorld..ctor () [0x00000] in <filename unknown>:0
>>   at (wrapper remoting-invoke-with-check) HelloWorld:.ctor ()
>>   at HelloWorld.Main () [0x00000] in <filename unknown>:0
>> [ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: An
>> exception was thrown by the type initializer for
>> System.Windows.Forms.WindowsFormsSynchronizationContext --->
>> System.TypeInitializationException: An exception was thrown by the type
>> initializer for System.Windows.Forms.XplatUI --->
>> System.ArgumentNullException: Could not open display (X-Server required.
>> Check you DISPLAY environment variable)
>> Parameter name: Display
>>   at System.Windows.Forms.XplatUIX11.SetDisplay (IntPtr display_handle)
>> [0x00000] in <filename unknown>:0
>>   at System.Windows.Forms.XplatUIX11..ctor () [0x00000] in <filename
>> unknown>:0
>>   at System.Windows.Forms.XplatUIX11.GetInstance () [0x00000] in
>> <filename unknown>:0
>>   at System.Windows.Forms.XplatUI..cctor () [0x00000] in <filename
>> unknown>:0
>>   --- End of inner exception stack trace ---
>>   at System.Windows.Forms.Theme.get_MenuAccessKeysUnderlined () [0x00000]
>> in <filename unknown>:0
>>   at System.Windows.Forms.SystemInformation.get_MenuAccessKeysUnderlined
>> () [0x00000] in <filename unknown>:0
>>   at System.Windows.Forms.Control..ctor () [0x00000] in <filename
>> unknown>:0
>>   at (wrapper remoting-invoke-with-check)
>> System.Windows.Forms.Control:.ctor ()
>>   at System.Windows.Forms.WindowsFormsSynchronizationContext..cctor ()
>> [0x00000] in <filename unknown>:0
>>   --- End of inner exception stack trace ---
>>   at System.Windows.Forms.Control..ctor () [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 HelloWorld..ctor () [0x00000] in <filename unknown>:0
>>   at (wrapper remoting-invoke-with-check) HelloWorld:.ctor ()
>>   at HelloWorld.Main () [0x00000] in <filename unknown>:0
>> #
>>
>
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