Beginner Help

[Anonymous]

Hey,
I've been trying to get TinyXML to work in my project. Unfortunately I cannot get even a simple test app to run. Rather, it likes to crash any program I put it in. Please, could somebody tell me what is wrong with the simple program below?

The XML file looks like this:

<?xml version="1.0" encoding="utf-8"?>
<config>
    <!--This is a config file-->
    <Input keys="WASD"/>
</config>

My C++ source looks like this:

#include "tinyXML/tinyxml.cpp"
#include "tinyXML/tinyxmlerror.cpp"
#include "tinyXML/tinyxmlparser.cpp"
#include "tinyXML/tinystr.cpp"
#include <string>
#include <windows.h>
std::string readXML(const char* tag, const char* label,const char* fname="config.xml") {
    TiXmlDocument doc(fname);
    std::string answer;
    if(doc.LoadFile()) {
        TiXmlElement* root = doc.RootElement();
        TiXmlNode* node = root->FirstChild( tag );
        answer=node->ToElement()->Attribute( label );
    }
    return answer;
}
int WINAPI WinMain(HINSTANCE,HINSTANCE,LPSTR,int) {
    MessageBox(NULL,readXML("Input","Keys").c_str(),"Alert",MB_OK);
    return 0;
}

What I get is this:

The application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

And then this:

A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available.

I'm using the latest version of MinGW, and everything compiles+links without warning or error.

Thanks everyone!

[Anonymous]

TiXmlNode* node = root->FirstChild( tag );
answer=node->ToElement()->Attribute( label );

are those pointer variables instantiated and valid?

[Preston]

i know this might be a little obvious but did you try just loading a simple xml document using tinyxml and not involving the windows api? maybe something at the console like:

#include "tinystr.cpp"
#include "tinyxml.cpp"
#include "tinyxmlerror.cpp"
#include "tinyxmlparser.cpp"
#include <iostream>
using namespace std;
int main()
{
        TiXmlDocument doc("testfile.xml");
        
        if(!doc.LoadFile())
           return 1;
        doc.Print();
}

you shouldn't have any problems with this if your tinyxml files are correct.

[ela]

Thanks a lot, that resolved my C source =))

[ela]

Hello everyone !!
I'm a beginner and I've just download tinyxml.
How can I get one information between the tags in order to put it in my structure please ?
thank you

[Anonymous]

Hey all,

Thanks for your suggestions. After playing around with it for ages I got the code below to work. It's very similar to the first one and I can't figure out why this one is better, but it is, so hopefully it will help somebody. I'm using the same code as above but with this replacement:

std::string readXML(const char* tag, const char* label,const char* fname="config.xml") {
    TiXmlDocument doc(fname);
    doc.LoadFile();
    if(!doc.LoadFile()) return label;
    TiXmlElement* root = doc.RootElement();
    TiXmlNode* node = root->FirstChild( tag );
    return (std::string)node->ToElement()->Attribute( label );
}