cairo-types {RGtk2} | R Documentation |
Generic data types
Generic data types used in the cairo API
CairoUserDataKey
CairoUserDataKey
is used for attaching user data to cairo
data structures. The actual contents of the struct is never used,
and there is no need to initialize the object; only the unique
a
cairo_data_key_tobject is used. Typically, you would just use the a static
cairo_data_key_tobject.
unused
[integer] not used; ignore.
cairo_destroy_func_t(data)
cairo_destroy_func_tthe type of function which is called when a data element is destroyed. It is passed the pointer to the data element and should free any memory and resources allocated for it.
data
[R object] The data element being destroyed.
Derived by RGtkGen from GTK+ documentation
http://www.cairographics.org/manual/cairo-types.html