cairoSetUserData: cairoSetUserData
Description
Attach user data to cr
. To remove user data from a surface,
call this function with the key that was used to set it and NULL
for data
.Usage
cairoSetUserData(cr, key, user.data)
Arguments
user.data
[R object] the user data to attach to the Cairo
Value
- [
CairoStatus
] CAIRO_STATUS_SUCCESS
or CAIRO_STATUS_NO_MEMORY
if a
slot could not be allocated for the user data.