Automatically assign an object declared in the class template XML to be set to a location on a freshly built instance’s private data, or alternatively accessible via get_template_child.
The struct can point either into the public instance, then you should use G_STRUCT_OFFSET(WidgetType, member) for struct_offset
, or in the private struct, then you should use G_PRIVATE_OFFSET(WidgetType, member).
An explicit strong reference will be held automatically for the duration of your instance’s life cycle, it will be released
automatically when dispose runs on your instance and if a struct_offset
that is != 0 is
specified, then the automatic location in your instance public or private data will be set to null. You
can however access an automated child pointer the first time your classes dispose runs, or
alternatively in destroy.
If internal_child
is specified, get_internal_child
will be automatically implemented by the Widget class so there is no need to implement it
manually.
The wrapper macros gtk_widget_class_bind_template_child
, gtk_widget_class_bind_template_child_internal
,
gtk_widget_class_bind_template_child_private
and gtk_widget_class_bind_template_child_internal_private
might be more
convenient to use.
Note that this must be called from a composite widget classes class initializer after calling set_template.
this |
A Widget |
name |
The “id” of the child defined in the template XML |
internal_child |
Whether the child should be accessible as an “internal-child” when this class is used in GtkBuilder XML |
struct_offset |
The structure offset into the composite widget’s instance public or private structure where the automated child pointer should be set, or 0 to not assign the pointer. |