Increases the reference count on cr by one. This prevents cr from being destroyed until a matching call to cairo_destroy() is made. The number of references to a cairo_t can be get using cairo_get_reference_count(). Since 1.0
the referenced cairo_t.
See Implementation
Increases the reference count on cr by one. This prevents cr from being destroyed until a matching call to cairo_destroy() is made. The number of references to a cairo_t can be get using cairo_get_reference_count(). Since 1.0