Hi, I think the subjet of message' subject is pointing wrong.
To have several types of rows in the treeview: - define another column in the model (not in the treeview). - at model load time, just fill in this column with the type of row. - now when defining the treeview, define first of all a filter on the model then the treeview on such filter. - define a modify function for the filter. - in the code of this modify function (which is called for every cell in every row using the filter, an iter to such filter and the column number) do: - obtain the model and the model iter from the filter and filter iter - obtain the row type - make the necessary to set a value to the cell. In the case of text, you can reformat the lines (for example using \n) or leave this job to the text cell renderer: - define the cell renderer as text or as markup. - play with several properties for column sizing and for wrapping. Hope you get success, regards. JLF Sent from TypeMail On Oct 14, 2015, 07:36, at 07:36, ternaryd <terna...@gmail.com> wrote: >Hi, > >Sorry for this long message, but I spend hours >trying to do this, and wanted to be sure to >have done my "homework". These three questions >are about a debian system with gtk+3 at version >3.16.6-1, the documentation I used mainly is >that on developer.gnome.org/gtk3/stable. > >The initial idea was a tree of a depth of up to >5 levels, each node representing 2 or 3 aspects >of a hierarchical concept, where each node, no >matter what level, can have a longer >description (up to maybe 10 lines of text). I >thought the tree view to be specially >attractive, because it is possible navigate >nicely collapsing and expanding single items, >all set to be editable, including the >descriptions, feeding each change back to >sqlite3. > >The first problem I couldn't solve was, when I >realized that I actually have two different >types of rows: the set of the 2 or 3 aspects >(adding at most some 100 to 150 characters >of text) would be one, the descriptive paragraph >the other. Is there any way to insert something >between rows? > >As I couldn't find a solution for that, >I conformed thinking of a rather wide window >and limiting the width of that column, such >that the text would be displayed in more than >one line. This lead to the second problem, as I >couldn't find out how to have the top line of >that paragraph be aligned with the rest of the >row. Also, each additional line increased the >vertical separation between the rows. On a 27 >inch monitor, a 10 line paragraph would insert >several screen pages full of white space. >Setting the row height explicitly to not >fixed wouldn't help. Then I found reports of >similar problems in Internet, but the solution, >setting property "yadj" or "yalign", would lead >to a program crash and didn't even promise to >solve the problem of the separation. What is the >correct way to do this? > >When looking through the properties of >GtkTreeView, GtkTreeViewColumn and >GtkCellRenderer/Text, I also found the >properties "language" and "language-set", but >again, when setting these properties, the >program would crash. I must do something right >setting properties, as others (e.g. "editable") >would work just fine. As the text in fact can >be from different languages, I thought this >possibility interesting. How are they used >correctly? > >Thanks, > >-- >Cris >_______________________________________________ >gtk-list mailing list >gtk-list@gnome.org >https://mail.gnome.org/mailman/listinfo/gtk-list
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