yang686526

when are dwginfields/dwgoutfields called?
when are dwginfields/dwgoutfields called?
hi,
we maitain a set of custom entities and database objects. i don't know whether is a problem but noone calls our overriden functions dwginfields and dwgoutfields. is there something special whcih must be implemented. i think in previous dwgdirect releases they were executed. i open the objects both for read and for write and the spelling and parameters are exactly as they should be...
thanks in advance for any help.
regards
chudomir
best regards
chudomir

dwgin/outfields() are called during dwg file loading/save, in default implementation of copying objects, during saving undo information and performing undo etc.
do you mean that your objects dwgin/outfields are not called during dwg file load/save?
if you open object for read or write dwginfields may be called only if you use partial loading and the object was not loaded yet.
if you open object for write and saving undo info is turned on dwgoutfields will be called at first modification of object as a result of assertwriteenabled() call. this is the reason why every object transformer method must call assertwriteenabled() before modifying data.
sergey slezkin

well, i think it's me wrong because i only use dwg database in memory and no disk i/o comes here.
actually i create a database object and then append a set of objects to it. they are opened and closed for write sometimes and i thought that then it's the time for the overridables to be called. at last the database is destroyed (without saving). may be by default undo and redo are turned off? if so, i'll keep the serialization code in these routines for future use...
thanks.
regards
chudomir
best regards
chudomir