Dnia 22-06-2005, śro o godzinie 18:25 -0400, Tristan Van Berkom napisał(a): > Uzytkownik wrote: > > Hi, > You should start off by reading: > > http://www.le-hacker.org/papers/gobject/ > > > 1. In g_param_spec_enum I must have GType of this enum. > > a) Why this function need it? > > Its needed to register metadata about the enum type > to the type system, furthermore the object will refuse > invalid values for the said enum. > > > b) How create for enum GType? > > Copy paste from my code: > > =========== header file =========== > enum GtkTtScrollTypeEnum { > GTKTT_SCROLL_JUMPY, > GTKTT_SCROLL_CATCH > }; > > > #define MY_PACKAGE_ENUM_TYPE (my_package_enum_type ()) > > GType gtktt_scroll_type (void); > > ============= source file ============== > GType > gtktt_scroll_type (void) > { > static GType etype = 0; > if (etype == 0) { > static const GEnumValue values[] = { > { GTKTT_SCROLL_JUMPY, "GTKTT_SCROLL_JUMPY", "jumpy" }, > { GTKTT_SCROLL_CATCH, "GTKTT_SCROLL_CATCH", "catch" }, > { 0, NULL, NULL } > }; > etype = g_enum_register_static ("GtkTtScrollType", values); > } > return etype; > } >
Thanks > > 2. I should register GType in package_name_get_type or > > package_class_init: > > You must register the GType in the _get_type(). > (if the type is not registered, then the type system didnt > get your GTypeInfo struct holding the pointer to the > _class_init function). > > So, g_object_new (my_package_get_type()) > will construct the object using the information stored > in the type system which was registered in my_package_get_type() > the first time it was called. > > Cheers, > -Tristan > I know. I thinking about something else (don't checking in runtime if it is initialised, but in _init() function caller at begining). Regards, -- Linux user: #376500 (patrz http://counter.li.org/)
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