Surface.setUserData

Attach user data to surface. To remove user data from a surface, call this function with the key that was used to set it and NULL for data.

class Surface

setUserData

(

cairo_user_data_key_t* key

,

,

cairo_destroy_func_t destroy

)

Parameters

key cairo_user_data_key_t*: the address of a cairo_user_data_key_t to attach the user data to
userData void*: the user data to attach to the surface
destroy cairo_destroy_func_t: a cairo_destroy_func_t which will be called when the surface is destroyed or when new user data is attached using the same key.

Return Value

Type: cairo_status_t

CAIRO_STATUS_SUCCESS or CAIRO_STATUS_NO_MEMORY if a slot could not be allocated for the user data.

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Source

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