[osg-users] Issue Subclassing GraphicsWindowX11

[Voerman, L.]

Hi Karl,
Did you find the GraphicsContext->setSwapCallback() call? It seems to me
you are taking a very difficult route to get a custom
swapBuffersImplementation.
Regards, Laurens.

On Thu, May 28, 2015 at 9:56 AM, Robert Osfield <robert.osfield at gmail.com>
wrote:

> Hi Karl,
>
> I haven't heard of this specific problem before, but then most users won't
> be subclassing from GraphicsWindowX11.  In principle I can't see any reason
> why it wouldn't work.  Without code in front of me that fails to compile I
> can only provides guesses as to what is amiss - my best guess is that
> either a X11 header needs to be added, or the ordering needs to be adjusted.
>
> I can't be any more specific without seeing the problem first hand and
> attempting to resolve it.
>
> Robert.
>
>
> On 27 May 2015 at 15:32, Cary, Karl A. <KARL.A.CARY at leidos.com> wrote:
>
>> I need to subclass the GraphicsWindowX11 class in order to provide a
>> custom swapBuffersImplementation. However, when I do this I then get a
>> really random error in the middle of one of my enumerations (expected
>> identifier before numeric constant). It happens when I include
>> osgViewer/api/X11/GraphicsWindowX11, which I have to include in order to
>> subclass GraphicsWindowX11. If not I am told 'expected class name before
>> {'. As for the enumeration, it happens on the definition of an enumeration
>> value called 'None' (NOTE: the value is called None, not the enumeration).
>> It is a 3rd party header/library so it cannot be changed. Any idea what is
>> going on? Or is there a different way I need to be
>> including/subclassing/declaring GraphicsWindowX11? Thank you.
>>
>> #include <osgViewer/GraphicsWindow>
>> #include <osgViewer/api/X11/GraphicsWindowX11>
>>
>> class MyWindow : public osgViewer::GraphicsWindowX11
>> {
>>         public:
>>                 MyWindow(osg::GraphicsContext::Traits* traits):
>>                         osgViewer::GraphicsWindowX11(traits) {}
>>
>>                 virtual void swapBuffersImplementation();
>> };
>>
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>
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