(Unicode C++) Insert XML into existing XML by calling InsertChildTreeAfter

Demonstrates how to insert an XML tree or subtree into another XML document using the InsertChildTreeAfter method.

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#include <CkXmlW.h>

void ChilkatSample(void)
    {
    // Build the 1st XML document:
    // <x1>
    //     <a1>1</a1>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>

    CkXmlW xml;
    xml.put_Tag(L"x1");
    xml.UpdateChildContent(L"a1",L"1");
    xml.UpdateChildContent(L"a2",L"2");
    xml.UpdateChildContent(L"a3",L"3");

    // Build a 2nd XML document:

    // <x2>
    //   <b1>11</b1>
    //   <b2>22</b2>
    //   <b3>33</b3>
    // </x2>

    CkXmlW xml2;
    xml2.put_Tag(L"x2");
    xml2.UpdateChildContent(L"b1",L"11");
    xml2.UpdateChildContent(L"b2",L"22");
    xml2.UpdateChildContent(L"b3",L"33");

    // We want to insert xml2 into xml to get this:

    // <x1>
    //     <a1>1</a1>
    //     <x2>
    //         <b1>11</b1>
    //         <b2>22</b2>
    //         <b3>33</b3>
    //     </x2>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>

    // Insert xml2 after "a1"

    int index = xml.TagIndex(L"a1");
    if (index < 0) {
        wprintf(L"a1 not found.\n");
        return;
    }

    xml.InsertChildTreeAfter(index,xml2);

    wprintf(L"%s\n",xml.getXml());

    // The result is:

    // <x1>
    //     <a1>1</a1>
    //     <x2>
    //         <b1>11</b1>
    //         <b2>22</b2>
    //         <b3>33</b3>
    //     </x2>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>

    // Note: xml2 now points to the subtree within xml.
    // For example, update "b3" and then see how it's updated within the merged document:
    xml2.UpdateChildContent(L"b3",L"33333333");

    wprintf(L"%s\n",xml.getXml());

    // The result:

    // <x1>
    //     <a1>1</a1>
    //     <x2>
    //         <b1>11</b1>
    //         <b2>22</b2>
    //         <b3>33333333</b3>
    //     </x2>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>
    }