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glibmm 2.78.1
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A convenience class for named custom types. More...
#include <glibmm/extraclassinit.h>

Protected Member Functions | |
| ExtraClassInit (GClassInitFunc class_init_func, void * class_data=nullptr, GInstanceInitFunc instance_init_func=nullptr) | |
| Constructor. More... | |
Protected Member Functions inherited from Glib::ObjectBase | |
| ObjectBase () | |
| This default constructor is called implicitly from the constructor of user-derived classes, even if, for instance, Gtk::Button calls a different ObjectBase constructor. More... | |
| ObjectBase (const char * custom_type_name) | |
| A derived constructor always overrides this choice. More... | |
| ObjectBase (const std::type_info & custom_type_info) | |
| This constructor is a special feature to allow creation of derived types on the fly, without having to use g_object_new() manually. More... | |
| ObjectBase (ObjectBase && src) noexcept | |
| ObjectBase & | operator= (ObjectBase && src) noexcept |
| virtual | ~ObjectBase () noexcept=0 |
| void | initialize (GObject * castitem) |
| void | initialize_move (GObject * castitem, Glib::ObjectBase * previous_wrapper) |
Additional Inherited Members | |
Public Types inherited from sigc::trackable | |
| typedef internal::func_destroy_notify | func_destroy_notify |
Public Types inherited from sigc::notifiable | |
| typedef internal::func_destroy_notify | func_destroy_notify |
Public Member Functions inherited from Glib::ObjectBase | |
| ObjectBase (const ObjectBase &)=delete | |
| ObjectBase & | operator= (const ObjectBase &)=delete |
| void | set_property_value (const Glib::ustring & property_name, const Glib::ValueBase & value) |
| You probably want to use a specific property_*() accessor method instead. More... | |
| void | get_property_value (const Glib::ustring & property_name, Glib::ValueBase & value) const |
| You probably want to use a specific property_*() accessor method instead. More... | |
| template<class PropertyType > | |
| void | set_property (const Glib::ustring & property_name, const PropertyType & value) |
| You probably want to use a specific property_*() accessor method instead. More... | |
| template<class PropertyType > | |
| void | get_property (const Glib::ustring & property_name, PropertyType & value) const |
| You probably want to use a specific property_*() accessor method instead. More... | |
| template<class PropertyType > | |
| PropertyType | get_property (const Glib::ustring & property_name) const |
| You probably want to use a specific property_*() accessor method instead. More... | |
| sigc::connection | connect_property_changed (const Glib::ustring & property_name, const sigc::slot< void()> & slot) |
| You can use the signal_changed() signal of the property proxy instead. More... | |
| sigc::connection | connect_property_changed (const Glib::ustring & property_name, sigc::slot< void()> && slot) |
| You can use the signal_changed() signal of the property proxy instead. More... | |
| void | freeze_notify () |
| Increases the freeze count on object. More... | |
| void | thaw_notify () |
| Reverts the effect of a previous call to freeze_notify(). More... | |
| virtual void | reference () const |
| Increment the reference count for this object. More... | |
| virtual void | unreference () const |
| Decrement the reference count for this object. More... | |
| GObject * | gobj () |
| Provides access to the underlying C GObject. More... | |
| const GObject * | gobj () const |
| Provides access to the underlying C GObject. More... | |
| GObject * | gobj_copy () const |
| Give a ref-ed copy to someone. Use for direct struct access. More... | |
Public Member Functions inherited from sigc::trackable | |
| trackable () noexcept | |
| trackable (const trackable &src) noexcept | |
| trackable (trackable &&src) noexcept | |
| ~trackable () | |
| void | add_destroy_notify_callback (notifiable *data, func_destroy_notify func) const |
| void | notify_callbacks () |
| trackable & | operator= (const trackable &src) |
| trackable & | operator= (trackable &&src) noexcept |
| void | remove_destroy_notify_callback (notifiable *data) const |
A convenience class for named custom types.
Use it if you need to add code to GType's class init function and/or need an instance init function. Example:
The callback functions (my_extra_class_init_function() and my_instance_init_function() in the example) are called from GLib (a C library). They shall have C linkage. (Many compilers accept callback functions with C++ linkage, but such a program has undefined behavior.)
If you want the functions with C linkage to have internal linkage, they must be declared 'static', even if they are defined in an anonymous namespace. The compiler respects namespace declarations of functions with C linkage, but the linker does not.
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explicitprotected |
Constructor.
| class_init_func | Pointer to an extra class init function. nullptr, if no extra class init function is needed. |
| class_data | Class data pointer, passed to the class init function. Can be nullptr, if the class init function does not need it. |
| instance_init_func | Pointer to an instance init function. nullptr, if no instance init function is needed. |