BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  BDS2006: #define-Conflict due to winspool.h          BorlandTalk.com Forum Index -> C++ Builder (VCL Components Usage) View previous topic :: View next topic   Author Message Udo Weik Guest Posted: Mon May 14, 2007 11:54 pm    Post subject: BDS2006: #define-Conflict due to winspool.h Hello, I'm using a 3rd Party component which has a method "AddForm". When I use that method, I get the following linker error: Unresolved external '__fastcall NAMESPACE::COMPONENT::AddFormA( ... *)' referenced from ... XYZ_UNIT1.OBJ In winspool.h is a #define which is the reason for that problem: #ifdef UNICODE #define AddForm AddFormW #else #define AddForm AddFormA #endif // !UNICODE Does anybody know a solution (apart from renaming the method...)? Thanks and greetings Udo Back to top Craig Farrell Guest Posted: Tue May 15, 2007 12:37 am    Post subject: Re: BDS2006: #define-Conflict due to winspool.h Hi, Quote: In winspool.h is a #define which is the reason for that problem: #ifdef UNICODE #define AddForm AddFormW #else #define AddForm AddFormA #endif // !UNICODE Does an undef help,e.g. #include <winspool.h? #undef AddForm Or does that just move the problem somewhere else? --Craig Back to top Remy Lebeau (TeamB) Guest Posted: Tue May 15, 2007 3:30 am    Post subject: Re: BDS2006: #define-Conflict due to winspool.h "Udo Weik" <WeikEngOff (AT) aol (DOT) com> wrote in message news:4648b013 (AT) newsgroups (DOT) borland.com... Quote: In winspool.h is a #define which is the reason for that problem: Winspool has other defines that interfer with various VCL methods (such as SetPort()). This is documented on Borland's website (go to http://search.borland.com). Microsoft's whole approach to using macros for function overloading causes all kinds of havoc on the VCL. Gambit Back to top Udo Weik Guest Posted: Tue May 15, 2007 11:37 pm    Post subject: Re: BDS2006: #define-Conflict due to winspool.h Hello Craig, Quote: Does an undef help,e.g. #include <winspool.h? #undef AddForm yep, works, inserted in the *.cpp-file: include <vcl.h> #pragma hdrstop #include <winspool.h> #undef AddForm #include "XYZ_UNIT1.h" Many thanks you both. 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