請問如果動態建立Tquery 最後下FreeOnRelease,記憶體會釋放嗎?? 以下兩者在記憶體釋放有何差別 1. qry.free; qry:=nil; 2 qry.FreeOnRelease

Extracted from Delphi help:    Frees the interface reference for components that were created from COM classes. Delphi syntax: procedure FreeOnRelease; C syntax: void __fastcall FreeOnRelease(void); Description FreeOnRelease is called when an interface implemented by the component is released. FreeOnRelease is used internally and calls the corresponding interface method. It should not be necessary to call FreeOnRelease directly. So you should always use qry.Free in your case. BTW, FreeAndNil(qry) is same as qry.Free; and then qry := nil;