class Cairo::UserDataKey

• Cairo::UserDataKey
• Reference
• Object

Overview

UserDataKey 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 address of a UserDataKey object is used. Typically, you would just use the address of a static UserDataKey object.

Defined in:

cairo/user_data_key.cr

Constructors

• .new(unused : Int32)
• .new(key : LibCairo::UserDataKeyT)
• .new

Instance Method Summary

• #to_unsafe : LibCairo::PUserDataKeyT

  Returns the pointer of the underlieing structure.

• #unused : Int32

  Not used.

• #unused=(unused : Int32)
• #user_data_key : LibCairo::UserDataKeyT

  Returns the underlieing structure.

Constructor Detail

Instance Method Detail