GTypeInfo

This structure is used to provide the type system with the information required to initialize and destruct (finalize) a type's class and its instances.

The initialized structure is passed to the g_type_register_static() function (or is copied into the provided GTypeInfo structure in the g_type_plugin_complete_type_info()). The type system will perform a deep copy of this structure, so its memory does not need to be persistent across invocation of g_type_register_static().

Members

Variables

baseFinalize
GBaseFinalizeFunc baseFinalize;

Location of the base finalization function (optional)

baseInit
GBaseInitFunc baseInit;

Location of the base initialization function (optional)

classData
void* classData;

User-supplied data passed to the class init/finalize functions

classFinalize
GClassFinalizeFunc classFinalize;

Location of the class finalization function for classed and instantiatable types. Location of the default vtable finalization function for interface types. (optional)

classInit
GClassInitFunc classInit;

Location of the class initialization function for classed and instantiatable types. Location of the default vtable inititalization function for interface types. (optional) This function is used both to fill in virtual functions in the class or default vtable, and to do type-specific setup such as registering signals and object properties.

classSize
ushort classSize;

Size of the class structure (required for interface, classed and instantiatable types)

instanceInit
GInstanceInitFunc instanceInit;

Location of the instance initialization function (optional, for instantiatable types only)

instanceSize
ushort instanceSize;

Size of the instance (object) structure (required for instantiatable types only)

nPreallocs
ushort nPreallocs;

Prior to GLib 2.10, it specified the number of pre-allocated (cached) instances to reserve memory for (0 indicates no caching). Since GLib 2.10, it is ignored, since instances are allocated with the [slice allocator][glib-Memory-Slices] now.

valueTable
GTypeValueTable* valueTable;

A GTypeValueTable function table for generic handling of GValues of this type (usually only useful for fundamental types)