Initializes attr's klass to klass, it's start_index to PANGO_ATTR_INDEX_FROM_TEXT_BEGINNING and end_index to PANGO_ATTR_INDEX_TO_TEXT_END such that the attribute applies to the entire text by default. Since 1.20
a PangoAttributeClass
See Implementation
Initializes attr's klass to klass, it's start_index to PANGO_ATTR_INDEX_FROM_TEXT_BEGINNING and end_index to PANGO_ATTR_INDEX_TO_TEXT_END such that the attribute applies to the entire text by default. Since 1.20