Quelle Optional.idl Sprache: C

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module com {  module sun {  module star {  module beans {

/**
   An optional value of a given type.

   <p>This structure is used as the type of interface attributes corresponding
   to instances of com::sun::star::beans::Property that
   have the com::sun::star::beans::PropertyAttribute::MAYBEVOID.  It might
   also be useful in other situations, for example as the return type of an
   interface method.</p>
*/
struct Optional<T> {
    /**
       Marks this structure instance as having an actual value.
     */
    boolean IsPresent;

    /**
       The actual value of this structure instance.

       <p>If no actual value is present, a producer of such a structure instance
       should leave this member defaulted, and a consumer of such a structure
       instance should ignore the specific value stored in this member.</p>
     */
    T Value;
};

}; }; }; };

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