Problem with stripping white spaces and references!?

Hi All,

I have the following problem:
I read lines from DXF file ( AutoCAD format file ). Then I need to
remove white spaces from lines to continue working on data i.e.
converting from string to int and so on. My StripWhiteSpace function
works in test program:

#include <iostream>
#include <string>
#include <fstream>

using namespace std;

void StripWhiteSpace( string& Destination )
    {
        for( int i = 0, j = Destination.length()-1; i<j; i++) {
            if( Destination[i] == ' ' || Destination[i] == '\t' ) {
                Destination.erase( i, 1 );
                j--;
            }
        }
    }

bool StringToInt( string& Source, int *Dest )
    {
        cout<<"Calling StringToInt with:"<<Source<<endl;

        unsigned int i = 0;
        bool isNegative = false;

        *Dest = 0;

        if( Source[0] == '-' ) {
            isNegative = true;
            i = 1;
        }

        for( ; i<Source.length(); i++ ) {
            if( Source[i] >= '0' && Source[i] <= '9' ) {
                if( ( i == 0 && isNegative == false ) || ( i == 1 && isNegative ==
true ) ){
                    *Dest = Source[i] - '0';
                }else{
                    *Dest = (*Dest)*10 + Source[i] - '0';
                }
            }else{
                return false;
            }
        }

        if( isNegative )
            *Dest = (*Dest)*-1;

        cout<<"(StringToInt): Source:"<<Source<<" Dest: "<<*Dest<<endl;
        return true;
    }

    int main()
    {
        ifstream fin("test.dxf");
        string a;
        while( !fin.eof() ) {
            fin>>a;
            StripWhiteSpace( a );
            cout<<a<<endl;
        }

        return 0;
    }

but doesn't work in my real program ( part of it below )

#ifndef DXFFILEREADER_HPP_
#define DXFFILEREADER_HPP_

#include <string>
#include <fstream>
#include <iostream>
#include "DXFToken.hpp"

using namespace std;

class DXFFileReader
{
private:
    ifstream dxfFileStream;
private:
    void StripWhiteSpace( string& Destination );
    bool StringToInt( string& Source, int *Dest );
    bool GetDXFLine( string& Destination );
public:
    DXFFileReader( string dxfFileToRead );
    bool IsOpened();
    bool GetDXFToken( DXFToken *dxfToken );
};

#endif /*DXFFILEREADER_HPP_*/

void DXFFileReader::StripWhiteSpace( string& Destination )
{
        int j = Destination.length();
        for( int i = 0; i<j; i++) {
            if( Destination[i] == ' ' || Destination[i] == '\t' ) {
                Destination.erase( i, 1 );
                j--;
            }
        }
        cout<<"StripWhiteSpace:"<<Destination<<endl;
}

bool DXFFileReader::StringToInt( string& Source, int *Dest )
{
        cout<<"Calling StringToInt with: "<<Source<<endl;
        unsigned int i = 0;
        bool isNegative = false;

        *Dest = 0;

        if( Source[0] == '-' ) {
            isNegative = true;
            i = 1;
        }

        for( ; i<Source.length(); i++ ) {
            if( Source[i] >= '0' && Source[i] <= '9' ) {
                if( ( i == 0 && isNegative == false ) || ( i == 1 && isNegative ==
true ) ){
                    *Dest = Source[i] - '0';
                }else{
                    *Dest = (*Dest)*10 + Source[i] - '0';
                }
            }else{
                cout<<"return false: "<<Source[i]<<" string legth:
"<<Source.length()<<endl;
                cout<<"last char: "<<Source[1]<<endl;
                return false;
            }
        }

        if( isNegative )
            *Dest = (*Dest)*-1;

        cout<<"(StringToInt): Source:"<<Source<<" Dest: "<<*Dest<<endl;
        return true;
    }

bool DXFFileReader::GetDXFLine( string& Destination )
{
    if( !dxfFileStream.is_open() || dxfFileStream.eof() )
        return false;

    getline( dxfFileStream, Destination, '\n');
    StripWhiteSpace( Destination );
    cout<<"GetDXFLine: "<<Destination<<endl;

    return true;
}

bool DXFFileReader::GetDXFToken( DXFToken *dxfToken )
{
    string CodeLine, ValueLine;
    int Code = 0;

    if( GetDXFLine( CodeLine ) && GetDXFLine( ValueLine ) ) {
        if( !StringToInt( CodeLine, &Code ) ) {
            return false;
        }else{
            if( Code == 999 ) {
                //This is comment :)
            } else if( (Code >=0 && Code <= 9) ||
                (Code >=300 && Code <= 309) ||
                (Code >=1000 && Code <= 1009) ||
                 Code == 100 ||
                 Code == 102 ) {
                dxfToken->AssignToken( Code, ValueLine );
            }else if( (Code >=60 && Code <= 79) ||
                      (Code >=90 && Code <= 99) ||
                      (Code >=170 && Code <= 175) ||
                      (Code >=1060 && Code <= 1071) ||
                      (Code >=280 && Code <= 289) ) {

                int Value = 0;
                if( !StringToInt( ValueLine, &Value ) )
                    return false;

                dxfToken->AssignToken( Code, Value );
            }else{
                return false;
            }
        }
    }else{
        return false;
    }
    return true;
}

the output is as follows:

C:\Documents and Settings\nestorovd\workspace\DXFReader\Debug>"C:
\Documents and Settings\nestorovd\workspace\DXFReader\Debug
\DXFReader.exe"
success openning file
StripWhiteSpace: 0
GetDXFLine: 0
StripWhiteSpace:SECTION
GetDXFLine: SECTION
Calling StringToInt with: 0
return false: string legth: 2
last char: 0

What I am doing wrong? Please help!