I am willing to make a 2D game with SDL and I am following a Shaun Mitchell's book. But I faced serious difficulties with this user-defined type conversion error when trying to compile my project...
Also, I am unfamiliar with this topic. I've watched some tutorials and searched the web for a solution.
Do I need to add
operator std::string&() const { return ???;}
to the tinyxmlstr.h in TiXmlString class? If so, how to implement it? What should I return?
If I don't define the STL (which I use) in tinyxml.h, the compiler then returns a linkage error.
Error 19 error LNK2019: unresolved external symbol "public: virtual __cdecl TiXmlNode::~TiXmlNode(void)" (??1TiXmlNode@@UEAA@XZ) referenced in function "public: virtual __cdecl TiXmlDocument::~TiXmlDocument(void)" (??1TiXmlDocument@@UEAA@XZ)
StateParser class and implementation is the same as the one in the book.
Finally, if I have a mistake somewhere, how to debug it properly and where to look for it? Thank you, in advance!
The error is clear: non conversion available from const TiXmlString
to const std::string &
.
According to this page , if I'm not wrong, there isn't even a direct conversion from TiXmlString
to a std::string
I suppose you can write a method like this (exactly like the value()
that return a const char *
)
std::string valueStr () cont
{ return value.c_str(); }
but in this way you return a copy of value
(so return a const std::string
, instead a plain std::string
, is useless), not a reference. I don't know if this it's OK for you.
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