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//! [0]
#include <QtHelp>
//! [0]


//! [1]
CONFIG += help
//! [1]


//! [2]
qhelpgenerator doc.qhp -o doc.qch
//! [2]


//! [3]
<?xml version="1.0" encoding="utf-8" ?> 
<QHelpCollectionProject version="1.0">
    <docFiles>
        <register>
            <file>doc.qch</file>
        </register>
    </docFiles>
</QHelpCollectionProject>
//! [3]


//! [4]
qcollectiongenerator mycollection.qhcp -o mycollection.qhc
//! [4]


//! [5]
...
<docFiles>
    <generate>
        <file>
            <input>doc.qhp</input>
            <output>doc.qch</output>
        </file>
    </generate>
    <register>
        <file>doc.qch</file>
    </register>
</docFiles>
...
//! [5]


//! [6]
QHelpEngineCore helpEngine("mycollection.qhc");
...

// get all file references for the identifier
QMap<QString, QUrl> links = 
    helpEngine.linksForIdentifier(QLatin1String("MyDialog::ChangeButton"));    

// If help is available for this keyword, get the help data
// of the first file reference.
if (links.count()) {
    QByteArray helpData = helpEngine->fileData(links.constBegin().value());        
    // show the documentation to the user
    if (!helpData.isEmpty())
        displayHelp(helpData);
}
//! [6]


//! [7]
<?xml version="1.0" encoding="UTF-8"?>
<QtHelpProject version="1.0">
    <namespace>mycompany.com.myapplication.1.0</namespace>
    <virtualFolder>doc</virtualFolder>	    
    <customFilter name="My Application 1.0">
        <filterAttribute>myapp</filterAttribute>
        <filterAttribute>1.0</filterAttribute>
    </customFilter>
    <filterSection>
        <filterAttribute>myapp</filterAttribute>
        <filterAttribute>1.0</filterAttribute>
        <toc>
            <section title="My Application Manual" ref="index.html">
                <section title="Chapter 1" ref="doc.html#chapter1"/>
                <section title="Chapter 2" ref="doc.html#chapter2"/>
                <section title="Chapter 3" ref="doc.html#chapter3"/>
            </section>
        </toc>
        <keywords>
            <keyword name="foo" id="MyApplication::foo" ref="doc.html#foo"/>
            <keyword name="bar" ref="doc.html#bar"/>
            <keyword id="MyApplication::foobar" ref="doc.html#foobar"/>
        </keywords>
        <files>
            <file>classic.css</file>
            <file>*.html</file>
        </files>
    </filterSection>
</QtHelpProject>
//! [7]


//! [8]
...
<virtualFolder>doc</virtualFolder>
...
//! [8]


//! [9]
...
<customFilter name="My Application 1.0">
    <filterAttribute>myapp</filterAttribute>
    <filterAttribute>1.0</filterAttribute>
</customFilter>
...
//! [9]


//! [10]
...
<filterSection>
    <filterAttribute>myapp</filterAttribute>
    <filterAttribute>1.0</filterAttribute>
...
//! [10]


//! [11]
...
<toc>
    <section title="My Application Manual" ref="index.html">
        <section title="Chapter 1" ref="doc.html#chapter1"/>
        <section title="Chapter 2" ref="doc.html#chapter2"/>
        <section title="Chapter 3" ref="doc.html#chapter3"/>
    </section>
</toc>
...
//! [11]


//! [12]
...
<keywords>
   <keyword name="foo" id="MyApplication::foo" ref="doc.html#foo"/>
   <keyword name="bar" ref="doc.html#bar"/>
   <keyword id="MyApplication::foobar" ref="doc.html#foobar"/>
</keywords>
...
//! [12]


//! [13]
...
<files>
    <file>classic.css</file>
    <file>*.html</file>
</files>
...
//! [13]