TRefObjectField
Less than 1 minute
TRefObjectField field type
MemTableEh unit have code to register new type of field - TRefObjectField. TRefObjectField is intended to keep the pointer to TObject type object and have Value property of TObject type.
At design-time choose ‘RefObjectField’ type in form of creating new field to create TRefObjectField field.
At run-time in the program you can create a field of this type by assign ftUnknown value to DataType property of FieldDef object.