Re: Client side usage of PersistStream

[Jean Bréfort <jbrefort wanadoo fr>]

Martin Kretzschmar wrote:

> Hi Christian,
>
> Am Die, 2003-06-17 um 00.13 schrieb Christian Glodt:
>  
>
> > I've been looking for an example of client side
> > usage of the PersistStream interface. Specifically,
> > I want to feed a local file to a Control in the easiest
> > possible way. I've tried PersistFile, which works fine,
> > but not all Controls support PersistFile anymore as its
> > deprecated.
> >    
>
> No, the PersistFile interface is not deprecated. Only the use of
> BonoboPersistFile for implementing PersistFile in a component is
> discouraged. Same for BonoboPersistStream.
>
>  
>
> > I'm currently blocked on the part where I need to
> > instantiate a Bonobo_Stream which I can pass to
> > Bonobo_PersistStream_load(). I've read somewhere that
> > GnomeVFS can create such a stream, but I didn't find
> > out how.
> >    
>
> To get a (read-only) Stream, do 
> stream = bonobo_get_object (moniker, "IDL:Bonobo/Stream:1.0", &ev);
>
> where moniker is "file:<<path to your file>>" for local files, or
> "vfs:<<vfs-uri>>" for gnome-vfs, or some other fancy moniker.
>
> But you really want:
>
> control = bonobo_get_object (moniker, "IDL:Bonobo/Control:1.0", &ev);
>
> which will return a control with the file loaded. It will use whatever
> PersistFoo the control implements.
>
>  
>
> > I'd be very grateful for any explanations or pointers
> > to sources I can study to see how this can be done.
> >    
>
> Nautilus can use PersistStream:
> nautilus/components/adapter/nautilus-adapter-stream-load-strategy.c
> in nautilus_adapter_stream_load_strategy_load_location
>
> And in gpdf a test uses PersistStream:
> gpdf/xpdf/tests/test-pdf-loading.cc, in load_via_bonobo_stream.
>
>  
Hi,

I have written some very simple tests for the Bonobo Controls in 
gchemutils (http://www.nongnu.org/gchemutils (only in cvs)), gchempaint 
(http://www.nongnu.org/gchempaint)and gcrystal 
(http://www.nongnu.org/gcrystal) which use the PersistStream interface. 
The files are test/bonobo-control-test.c and all three are very similar, 
just the control (and the file loaded) are different.

Best regards,

Jean