THPDFHeadlessTextAppearance.ObjectCount

The number of indirect objects held by a built text appearance

property ObjectCount: Integer read GetObjectCount;

The unit is HPDFHeadlessAppearance; valid object indexes run from 0 to ObjectCount minus one

Enumerate the objects with GetObject, take ownership of one with DetachObject, and read back an object number with GetObjectNumber

The number of the first object is reported separately by the FirstObjectNumber property