[Paraview-developers] PVSM state file reader

[Chiranjib Sur]

Hi Utkarsh,
Still something I am missing, but I can't figure out what is it.

Following is my intention:


1. (From my C++ application) Load an external .pvsm file --> Scan through
all the objects in the pipeline (this part works in PV GUI extension).

2. instead of using the pqLoadStateReaction can I directly load the file
like this :

   std::string pvsm_file = "myOwn.pvsm";
   QString qstr = QString::fromStdString(pvsm_file); // converts
std:;string to QString

      pqApplicationCore*    core =  pqApplicationCore::instance();
   pqServer* server;
   vtkSMStateLoader* loader;
   core->loadState( pvsm_file.c_str(), server, loader);


If I do that, the program operated normally (no seg fault), but I can't
build the servermanager model using the pqApplicationcore, the program give
me a seg fault if  I do

pqServerManagerModel* sm = core->getServerManagerModel();

3. I need this pqServerManagerModel to use it later for scanning through
the pipeline of objects as I see them in PV.

Any help?

Thanks,
Chiranjib

On Mon, Jun 20, 2016 at 7:22 PM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> > The code compiles (all the necessary headers are taken care of) but I
> get a
> > seg fault during run time.
>
> Hard to say why. Debugger is really your friend. If you haven't
> already, I'd suggesting doing a debug build of ParaView and seeing
> what's going on.
>
> > Is there any place where I can see some examples on that.
> pqLoadStateReaction is the example of how to load a state. That's the
> code ParaView uses when you click "Load State" from the File menu.
>
> > I am familiar with step 2 by which I can scan the paraview pipeline and
> get
> > the information all object proxies. At this stage I am not able to figure
> > out how to link between step 1 and step 2.
>
> Just step through the code in pqLoadStateReaction.
>
> pqLoadStateReaction::loadState() --> pqApplicationCore::loadState()
> --> vtkSMSessionProxyManager::LoadXMLState() --> vtkSMStateLoader.
>
> Utkarsh
>
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