On Sat, 2017-09-09 at 21:46 +0000, Emmanuele Bassi wrote: > Boxed types use g_boxed_free() to release resources, and > g_boxed_copy() to copy them: > https://developer.gnome.org/gobject/stable/gobject-Boxed-Types.html > > Ciao, > Emmanuele. Yes I know :-) But from https://developer.gnome.org/pango/stable/pango-Fonts.html#pango-font-description-new PangoFontDescription is a boxed type (from Object Hierarchy), and we shall use pango_font_description_free() for freeing. Do you suggest just using g_boxed_free() instead? I don't think that is right? What I found out in the last few hours at least: Pango data types which needs a ...destroy() function for freeing seems to be mostly marked with introspectable="0". So my current impression is, that for all the data types which I "see" from gobject introspection with transfer- ownership="full", I have to use ...free() for freeing. For other data types, which needs ...destroy() I have to manually create the glue code, when they should be needed at all. But there are also data types like PangoFontMetrics which may need an unref instead -- maybe that ones are used internally only. But pango is really hard to understand. For example https://developer.gnome.org/pango/stable/pango-Layout-Objects.html#pango-layout-get-line For that we have transfer == none, but we can modify the result, and we can ref and unref the result. To make it even more complicated there is also pango_layout_get_line_readonly() _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list
