Hi,
On 19 Nov, 2012, at 23:05, Johannes <jbru...@datasolid.de> wrote:
> Hi,
>
> I have done some further debugging and have gained a little insight, but
> have not yet solved the problem entirely.
>
> What is happening goes as follows:
>
> After creation of my scene manager and the embedded ShadowStage object,
> my composite viewer (managing the viewports and the RenderAction) calls
> redraw which comes around in the ShadowStage::renderEnter method. This
> method then calls this->setData(pData, ..., ract), with a just created
> ShadowStageData object. Inside of this call a connection between the
> RenderAction and this StageData instance is established.
>
> Now on destruction of my composite viewer the render action is
> destroyed. This leads, by the established connection, to the destruction
> of the ShadowStageData instance.
>
> But, the setData(...) call also establish a change handler between the
> ShadowStage and the ShadowStageData instances.
>
> Now on destruction of my scene manager instance the embedded ShadowStage
> object is destroyed. This, however, yields to a change message to the
> already destroyed ShadowStageData instance.
>
> I think that this is not a destruction order problem since the my scene
> manager does have an idependent lifetime from the composite viewer.
>
> What is missing, IMHO, is a disconneting operation from the StageData
> destructor to the Stage instance.
plausible, let me check, in theory the connection should have been deregistered
if either part
(data or action) is destroyed.
kind regards
gerrit
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