Re: Can't seem to get abstract to work in unmanaged class
"Alex Blekhman" <firstname.lastname@example.org> skrev i meddelandet
"nickdu" <email@example.com> wrote in message
I want to define something like an interface, however I want one of
methods to make use of a variable number of arguments and since an
won't let me do that I figured an abstract class would be the next
thing. After reading
I assumed I would be able to define this unmanaged C++ abstract
VS.NET 2003. However when I compile with the class defined as:
class ILogger abstract
virtual void Log(short type, long severityLevel, const char
*format, ...) =
virtual void LogArg(short type, long severityLevel, const char
va_list argList) = 0;
I get the following error:
c:\data\development\interface\logger.h(6) : error C2470: 'abstract'
a function definition, but there is no formal parameter list;
If I remove 'abstract' it compiles fine.
What am I doing wrong?
`abstract' keyword is VS2005 feature (C++/CLI, to be exact). I'm not
sure it's available in VS2003.NET.
It's is not needed in ISO C++ ("real C++"). Just define your pure
virtual functions, and the class is abstract.
On the other hand, variable number of arguments looks so very C. How
many variants do you expect? Could it be handled in a type safe manner
with a few overloads, or a template?
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