|  |  |  | Pango Reference Manual |  | 
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| PangoEngineLangPangoEngineLang — Rendering-system independent script engines | 
            PangoEngineLang;
            PangoEngineLangClass;
#define     PANGO_ENGINE_TYPE_LANG
#define     PANGO_ENGINE_LANG_DEFINE_TYPE   (name, prefix, class_init, instance_init)
typedef struct _PangoEngineLang PangoEngineLang;
The PangoEngineLang class is implemented by engines that customize the rendering-system independent part of the Pango pipeline for a particular script or language. For instance, a custom PangoEngineLang could be provided for Thai to implement the dictionary-based word boundary lookups needed for that language.
typedef struct {
  void (*script_break) (PangoEngineLang *engine,
			const char    *text,
			int            len,
			PangoAnalysis *analysis,
			PangoLogAttr  *attrs,
                        int            attrs_len);
} PangoEngineLangClass;
Class structure for PangoEngineLang
| script_break () | Provides a custom implementation of pango_break(). if this is NULL, pango_default_break() will be used. | 
#define PANGO_ENGINE_TYPE_LANG "PangoEngineLang"
A string constant defining the engine type for language engines. These engines derive from PangoEngineLang.
#define PANGO_ENGINE_LANG_DEFINE_TYPE(name, prefix, class_init, instance_init)
Outputs the necessary code for GObject type registration for a PangoEngineLang class defined in a module. Two static symbols are defined.
static GType prefix_type; static void prefix_register_type (GTypeModule module);
The prefix, _register_type() function should be called in your script_engine_init() function for each type that your module implements, and then your script_engine_create() function can create instances of the object as follows:
PangoEngine *engine = g_object_new (prefix_type, NULL);
| name : | Name of the the type to register (for example:, ArabicEngineFc | 
| prefix : | Prefix for symbols that will be defined (for example:, arabic_engine_fc | 
| class_init : | Class initialization function for the new type, or NULL | 
| instance_init : | Instance initialization function for the new type, or NULL | 
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