Hello, I apologize, I explained what I wanted to say in a bad way the etext example given in the tutorial does not show a write_file example. I tried to implement write_file in my application by giving a look at Turtle art example, adapting it for a custom MIME type. I believe it is quite simple to do this, but unfortunately, i must have done a mistake in my application : <ul><li>when I give a look at the journal, the screen capture of my save is ok. But when I try to open it with my application, the picture as been erased and I have lost all my data (Instead of really opening my save, it starts from sratch and erase old saves). So I think I misunderstood the developpment of interaction with the journal. My MIME type is *.gph and stands for application/x-graph </li><li>when I copy an entry from the journal to the USB key, it has the gph extension, but it appears as empty : screen capture is a green background (the standard background of my application). However, when i open it with a text editor from my linux host, it has text data. So i really think i have misunderstood the development of interaction with the journal</li> </ul>I apologize for what i've said in my recent post. Regards <div class="gmail_quote">2011/6/21 James Simmons <<a href="mailto:nicestep@gmail.com">nicestep@gmail.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Laurent, I thought I had covered what you need to know in MYOSA, but if it wasn't clear all you need to do to load a drawing that you created in your Activity is implement the def read_file(self, file_path): method. That gets executed when your Activity gets loaded, and file_path will contain the data from your Journal entry. You can also read metadata from the Journal entry here. When you close your Activity then the def write_file(self, filename): will save your drawing file as a Journal entry. The write_file() method is also the place where you can set up metadata for your Journal entry. write_file() is also invoked when you switch the focus away from your Activity. That is all most Activities will ever need to do, but if you want to do more the chapter "Fun With The Journal" will give you the details. If there are features you need to know about that I didn't cover could you let me know what they are? James Simmons <div><div></div><div class="h5"> On Tue, Jun 21, 2011 at 12:59 PM, laurent bernabe <<a href="mailto:laurent.bernabe@gmail.com">laurent.bernabe@gmail.com</a>> wrote: > Hello everyone, > > I just would like to know where is the best place to learn interaction with > Sugar OLPC journal ? > Because I think that I've not yet well understand the concept, for my > project LearningWriting. > > I've read the tutorial > <a href="http://en.flossmanuals.net/make-your-own-sugar-activities/" target="_blank">http://en.flossmanuals.net/make-your-own-sugar-activities/</a>, but it does not > seem to cover all features. > (I need to save my drawings and put them back in my application) > > Regards > </div></div>> _______________________________________________ > Sugar-devel mailing list > <a href="mailto:Sugar-devel@lists.sugarlabs.org">Sugar-devel@lists.sugarlabs.org</a> > <a href="http://lists.sugarlabs.org/listinfo/sugar-devel" target="_blank">http://lists.sugarlabs.org/listinfo/sugar-devel</a> > > </blockquote></div>