Article View: borland.public.cppbuilder.nativeapi
Article #2589Re: dynamic_cast does not work in packages
From: Remy Lebeau (TeamB)
Date: Thu, 01 Feb 2007 18:36
Date: Thu, 01 Feb 2007 18:36
22 lines
1688 bytes
1688 bytes
"Dmitry" <dmitry@pikalevo.com> wrote in message news:45c1f643@newsgroups.borland.com... > I've move some working code from exe to bpl, and now > dynamic_cast does not work in bpl. Yes, it does. Just not the way you think it does. > meaning it always return NULL > what can be a problem You are not taking into account that the RTTI inside a package is different than the RTTI inside the application or other packages. You can't allocate an object in a package, pass it to the application (or another package), and then test the type of the object using a type that is declared in a different module. In order for dynamic_cast to work, it has to be called in the same module that declares and allocates the object type being tested. Gambit
Technical Details
Message-ID:
<45c2330e$1@newsgroups.borland.com>Path:
arc1-ca.pugleaf.net!g2news2.google.com!news3.google.com!news1.google.com!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mailReferences:
<45c1f643@newsgroups.borland.com>Show Full Headers
Complete Article Headers
X-Google-Thread: 10cc67,eea25a98edb328b5 X-Google-Attributes: gid10cc67,public X-Google-Language: ENGLISH,ASCII-7-bit From: "Remy Lebeau \(TeamB\)" <no.spam@no.spam.com> Newsgroups: borland.public.cppbuilder.nativeapi References: <45c1f643@newsgroups.borland.com> Subject: Re: dynamic_cast does not work in packages Date: Thu, 1 Feb 2007 10:36:28 -0800 Lines: 24 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 NNTP-Posting-Host: 75.83.34.171 Message-ID: <45c2330e$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1170354958 75.83.34.171 (1 Feb 2007 10:35:58 -0800) Path: arc1-ca.pugleaf.net!g2news2.google.com!news3.google.com!news1.google.com!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail