[Paraview] Please help!! How to force Render() from a reader

[Fabian Wein]

Dear Kitware experts and users, :)

I'm still fighting with my live data reader and my deadline is
approaching :(

In my vtkMultiBlockDataSetAlgorithm derived reader
I implement

RequestInformation()
RequestData()
and
RequestUpdateExtent()

and call Modfied() and Update() from a thread.
Sofar all works, I trigger RequestUpdateExtent() for a valid
time-value not
read up to now. This time value is request by RequestData() and I return
the new data - there is just no rendering.

I have no idea about how to force it.

Thank you very much!

Fabian Wein