Unable to get POCO_DECLARE_EXCEPTION to work

[hixxy]

Hello,

I've just started experimenting with Poco for the first time and I am unable to get the POCO_DECLARE_EXCEPTION macro to work.

Even trying to compile the following in a file of its own fails:

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#include <Poco/Exception.h>

POCO_DECLARE_EXCEPTION(Test_API, TestException, Poco::RuntimeException);


hixxy@dev:~/test/src{}$ g++ test.cpp
test.cpp:3: error: expected initializer before ‘:’ token
hixxy@dev:~/test/src{}$

I am using the latest Poco version compiled on Debian Squeeze only yesterday.

Thanks

[lihui7115]

I think you need to use "POCO_IMPLEMENT_EXCEPTION" to implement the declaration.
See the "Exception.cpp", you will get it

[guenter]

Have you declared the Test_API macro? This is needed on Windows to add DLL export keywords to class declarations. On other platforms, or if you don't write a DLL, just define it as empty, e.g.:

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#define Test_API

[hixxy]

I had not declared the Test_API. I actually had no idea what it was, but it fixes that error, but now when I add in the implementation macro, I get an error because typeid is used without the typeinfo header being included.

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test.cpp: In member function ‘virtual const char* TestException::className() const’:
test.cpp:6: error: must #include <typeinfo> before using typeid

If the macros in Poco/Exception.h use typeid in their generated code, shouldn't the header be included in Poco/Exception.h?