請問 COM 可以 free 內部產生而被外界參考的物件嗎? 雖然 COM可以在參考為0時自行Destroy,但是在有些地方我還是喜歡自行控制物件的生死,就如VCL物件般的在Destroy時將子物件free,不過使用COM物件我卻無法自行控制,我試過用_RefRelease,CoDisconnectObject()等等的方法,可是都吃鱉,有那位高人可以給一些指點 ex. ObjectB產生在ObjectA中 refC:=ObjectB(被外部或其他的object參考) objectA:=nil;(雖然ObjectA Free了,但是ObjectB還存在) refC:=nil;(此時ObjectB 才真正的Free);

You can... by using the object's Free method. But it would probably raise exception when your reference (to its interface) is being set to nil later.

引言: You can... by using the object's Free method. But it would probably raise exception when your reference (to its interface) is being set to nil later.

我有試著在ObjectA.Destroya時將TObjectB.Free,而ObjectB確實已Free 但是在程式結束時如你所說會出現錯誤,我想是最後程式將所有 參考設為nil可是ObjactB己Destroy了,難道要改寫_Addref及_Release或是原本就不可以這樣子. 因為ObjectB為ObjectA的子物件若ObjectA destroy而ObjectB因為尚有參考而存在,其ObjectB不可使用且佔據資源,故希望可以找出像VCL的物件生命週期控制模式 用這兩Class可行嗎? TContainedObject TAggregatedObject 發表人 - suda 於 2004/01/05 11:52:50 發表人 - suda 於 2004/01/05 11:54:01 發表人 - suda 於 2004/01/05 12:26:00

I think you should better have the reference counting done the destruction of the objects for you...

引言: I think you should better have the reference counting done the destruction of the objects for you...

我打算改寫_addref,_release

引言: 我打算改寫_addref,_release

Any particular reason

Yes! 因為我想控制子物件,與父層同一個Lifetime是為了避免無效的物件佔據資源,我公司的會計系統使用鼎新三層架構,常會有資源釋放不完全,造成一陣子就要重開機,所以研究一下