Re: [vrjuggler-devel] Determining the context from a mouse event

[Doug M. <mc...@ia...>]

On Sep 14, 2009, at 10:44 AM, Patrick Hartling wrote:

> Doug McCorkle wrote:
>> Patrick Hartling wrote:
>>> Doug McCorkle wrote:
>>>
>>>> Patrick Hartling wrote:
>>>>
>>>>> Doug McCorkle wrote:
>>>>>
>>>>>
>>>>>> Hello Patrick,
>>>>>>
>>>>>> On Aug 9, 2009, at 8:35 PM, Doug McCorkle wrote:
>>>>>>
>>>>>> [snip]
>>>>>>
>>>>>>
>>>>>>
>>>>>>>>> Try r21120. It ended up being pretty easy to add.
>>>>>>>>>
>>>>>>>>>
>>>>>>>> Thanks Patrick! You beat me to the punch. We will give this a  
>>>>>>>> try
>>>>>>>> with
>>>>>>>> what we are trying to do and report back. We should have  
>>>>>>>> results from
>>>>>>>> our testing on various hardware platforms by the end of next  
>>>>>>>> week.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>> This is working for our various hardware configurations.  
>>>>>>> Thanks for
>>>>>>> adding this support.
>>>>>>>
>>>>>>>
>>>>>> I am using this code and am trying to determine if a window  
>>>>>> that is
>>>>>> receiving input is an InputWindow or a display Window and I am  
>>>>>> unable
>>>>>> to use a dynamic cast to do this. I am getting this compile  
>>>>>> error on
>>>>>> Mac OS 10.5:
>>>>>>
>>>>>> error: cannot dynamic_cast ‘inputArea’ (of type ‘class
>>>>>> gadget::InputArea*’) to type ‘class  
>>>>>> gadget::InputWindowCocoa*’ (source
>>>>>> type is not polymorphic)
>>>>>> error: cannot dynamic_cast ‘inputAreaCocoa’ (of type ‘class
>>>>>> gadget::InputAreaCocoa*’) to type ‘class
>>>>>> vrj::opengl::WindowCocoa*’ (source type is not polymor
>>>>>>
>>>>>> Do you know why this would be the case? I am not understanding  
>>>>>> why I
>>>>>> cannot dynamic cast to different Input Areas. Thanks for the  
>>>>>> help.
>>>>>>
>>>>>>
>>>>> vrj::opengl::WindowCocoa and gadget::InputWindowCocoa do not  
>>>>> have a
>>>>> derived/base relationship; they are sibling types. Both derive  
>>>>> from
>>>>> gadget::InputAreaCocoa, which in turn derives from  
>>>>> gadget::InputArea.
>>>>>
>>>>>
>>>>>
>>>> Right, so it seems I should be able to dynamic cast an InputArea  
>>>> to an
>>>> InputAreaCocoa and/or an InputWindowCocoa correct?
>>>>
>>> If you have included gadget/Devices/KeyboardMouseDevice/ 
>>> InputAreaCocoa.h
>>> and/or gadget/Devices/KeyboardMouseDevice/InputWindowCocoa.h, then  
>>> yes.
>>>
>> I have but I still get the above error.
>
> Update to r21121. gadget::InputArea had no virtual methods and thus  
> was not
> a polymorphic base type. That was a pretty serious oversight.

Ahh. Things are working now.

Doug