(C++) Fetch ISBN XML from isbndb.com and Parse

Demonstrates sending a query to isbndb.com and parsing the XML response.

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#include <CkHttp.h>
#include <CkXml.h>

void ChilkatSample(void)
    {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http;

    // The access_key in this URL is a valid access key, but limited to 100 queries per day.
    // If the key does not work, it may be that others were testing and exhausted the limit.
    const char *strXml = http.quickGetStr("http://isbndb.com/api/books.xml?access_key=OV8L2Y9I&results=details&index1=isbn&value1=0443074348");
    if (http.get_LastMethodSuccess() != true) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkXml xml;
    bool success = xml.LoadXml(strXml);

    // The XML returned for this URL is the following:

    // <?xml version="1.0" encoding="UTF-8" ?>

    // <ISBNdb server_time="2007-10-25T14:07:25Z">
    //     <BookList total_results="1" page_size="10" page_number="1" shown_results="1">
    //         <BookData book_id="diagnostic_histopathology_of_tumors_2_volume_set_with_cd_rom" isbn="0443074348">
    //             <Title>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs</Title>
    //             <TitleLong>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs (Diagnostic Histopathology of Tumors (Fletcher))</TitleLong>
    //             <AuthorsText>Christopher D. M. Fletcher (Editor)</AuthorsText>
    //             <PublisherText publisher_id="churchill_livingstone">Churchill Livingstone</PublisherText>
    //             <Details dewey_decimal="616" physical_description_text="2166 pages" language="" edition_info="Hardcover; 2007-03-13" dewey_decimal_normalized="616" lcc_number="" change_time="2006-12-13T14:53:42Z" price_time="2007-10-25T01:12:13Z" />
    //         </BookData>
    //     </BookList>
    // </ISBNdb>

    // First, navigate to the BookData node:
    success = xml.FirstChild2();
    success = xml.FirstChild2();

    // Show the Title and AuthorsText:
    std::cout << xml.getChildContent("Title") << "\r\n";
    std::cout << xml.getChildContent("AuthorsText") << "\r\n";

    // Show the publisher_id attribute of the PublisherText node:
    CkXml *xml2 = 0;
    xml2 = xml.FindChild("PublisherText");
    std::cout << xml2->getAttrValue("publisher_id") << "\r\n";

    delete xml2;

    // Save the XML to a file:
    success = xml.SaveXml("book.xml");
    }