Comments for Interface It!

Interface It!

2002-07-20T23:41:50-07:00

Hi, JimmyI notice you state that "TComponent (in Delphi 6) does not implement reference counting, so this code will cause a memory leak." for the following codes:--------------------------------------------------var VI: IVersionInfo;begin VI := TVersionComponent.Create(Self); Caption := IntToStr(VI.MajorVersion) + '.' + IntToStr(VI.MinorVersion) + '.' + IntToStr(VI.Build);end;--------------------------------------------------However, I think VI will be eventually free because you pass "Self" to the TVersionComponent's constructor,when Self(the owner) is detroyed, it will destroy VI, right?Looking forward for your kindly response.Thanks in advance.

Interface It!

2002-01-16T08:02:59-08:00

Hello Jimmy!Congratulations for the article!Some questions:1) to create a new interface should I create a new conventional Unit?2) to implement an interface should I always create a new Component?I'm a begginer in Interface's world, sorry for the basic questions.Thank YouAnderson - from Brazil

re: By the way (about WebSnap Pack)...

2001-11-21T15:50:43-08:00

Hey - that would be cool! As long as you follow the license agreement, I'm fine with it. E-mail me privatly if you need any more info: jimmy@used-disks.com.Testing HTML:Email

By the way (about WebSnap Pack)...

2001-11-21T12:32:04-08:00

I'm finishing a book about Delphi, with the focus on databases and Internet (no OOP, no VCL), but... is a book in Spanish, to be published in Spain and Latin America. It's not a large market, of course. I was wondering, are you interested about including the Web Snap Pack, or part of it, or publicity (free, of course!) in the book's CD? I would send you the post card you're asking for, and the book...About ComObject... yep, I read that in the help. Moreover, I know TComponent delegates explicitly the implementation of some of its COM related methods to ComObject, whenever possible. But didn't see any use for this at that moment. Thanks anyway.

re: Jimmy, do you know what's the use for TComponent.ComObject?

2001-11-21T09:11:58-08:00

Remember that interfaces are *not* COM. This article has nothing to do with COM. To answer your question: The ComObject property is for components that are wrappers for COM components. It is used to assign a COM interface to a component which implements that interface.If you don't want to use the source - use the help file ;).

Jimmy, do you know what's the use for TComponent.ComObject?

2001-11-21T03:38:08-08:00

Has it something to do with streaming interface references?[Yeah, Luke, I know I should use the Source, but ...]Thanks in advance (and nice article, btw!).