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libqt3-devel-3.0.2-2mdk.i586.rpm

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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Simple HTML Help Browser</h1>

   
<p> 
This example implements a simple HTML help browser using
Qt's richtext capabilities.
<p> <hr>
<p> Header file:
<p> <pre>/****************************************************************************
** $Id:  qt/helpwindow.h   3.0.2   edited Oct 12 12:18 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#ifndef HELPWINDOW_H
#define HELPWINDOW_H

#include &lt;<a href="qmainwindow-h.html">qmainwindow.h</a>&gt;
#include &lt;<a href="qtextbrowser-h.html">qtextbrowser.h</a>&gt;
#include &lt;<a href="qstringlist-h.html">qstringlist.h</a>&gt;
#include &lt;<a href="qmap-h.html">qmap.h</a>&gt;
#include &lt;<a href="qdir-h.html">qdir.h</a>&gt;

class QComboBox;
class QPopupMenu;

class HelpWindow : public <a href="qmainwindow.html">QMainWindow</a>
{
    <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
public:
    HelpWindow( const <a href="qstring.html">QString</a>&amp; home_,  const <a href="qstring.html">QString</a>&amp; path, QWidget* parent = 0, const char *name=0 );
    ~HelpWindow();

private slots:
    void setBackwardAvailable( bool );
    void setForwardAvailable( bool );

    void textChanged();
    void about();
    void aboutQt();
    void openFile();
    void newWindow();
    void print();

    void pathSelected( const <a href="qstring.html">QString</a> &amp; );
    void histChosen( int );
    void bookmChosen( int );
    void addBookmark();

private:
    void readHistory();
    void readBookmarks();

    <a href="qtextbrowser.html">QTextBrowser</a>* browser;
    <a href="qcombobox.html">QComboBox</a> *pathCombo;
    int backwardId, forwardId;
    <a href="qstring.html">QString</a> selectedURL;
    <a href="qstringlist.html">QStringList</a> history, bookmarks;
    <a href="qmap.html">QMap</a>&lt;int, QString&gt; mHistory, mBookmarks;
    <a href="qpopupmenu.html">QPopupMenu</a> *hist, *bookm;

};





#endif

</pre>

<p> <hr>
<p> Implementation:
<p> <pre>/****************************************************************************
** $Id:  qt/helpwindow.cpp   3.0.2   edited Jan 31 12:34 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "helpwindow.h"
#include &lt;<a href="qstatusbar-h.html">qstatusbar.h</a>&gt;
#include &lt;<a href="qpixmap-h.html">qpixmap.h</a>&gt;
#include &lt;<a href="qpopupmenu-h.html">qpopupmenu.h</a>&gt;
#include &lt;<a href="qmenubar-h.html">qmenubar.h</a>&gt;
#include &lt;<a href="qtoolbar-h.html">qtoolbar.h</a>&gt;
#include &lt;<a href="qtoolbutton-h.html">qtoolbutton.h</a>&gt;
#include &lt;<a href="qiconset-h.html">qiconset.h</a>&gt;
#include &lt;<a href="qfile-h.html">qfile.h</a>&gt;
#include &lt;<a href="qtextstream-h.html">qtextstream.h</a>&gt;
#include &lt;<a href="qstylesheet-h.html">qstylesheet.h</a>&gt;
#include &lt;<a href="qmessagebox-h.html">qmessagebox.h</a>&gt;
#include &lt;<a href="qfiledialog-h.html">qfiledialog.h</a>&gt;
#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qcombobox-h.html">qcombobox.h</a>&gt;
#include &lt;<a href="qevent-h.html">qevent.h</a>&gt;
#include &lt;<a href="qlineedit-h.html">qlineedit.h</a>&gt;
#include &lt;qobjectlist.h&gt;
#include &lt;<a href="qfileinfo-h.html">qfileinfo.h</a>&gt;
#include &lt;<a href="qfile-h.html">qfile.h</a>&gt;
#include &lt;<a href="qdatastream-h.html">qdatastream.h</a>&gt;
#include &lt;<a href="qprinter-h.html">qprinter.h</a>&gt;
#include &lt;<a href="qsimplerichtext-h.html">qsimplerichtext.h</a>&gt;
#include &lt;<a href="qpainter-h.html">qpainter.h</a>&gt;
#include &lt;<a href="qpaintdevicemetrics-h.html">qpaintdevicemetrics.h</a>&gt;

#include &lt;ctype.h&gt;

<a name="f408"></a>HelpWindow::HelpWindow( const <a href="qstring.html">QString</a>&amp; home_, const <a href="qstring.html">QString</a>&amp; _path,
                        <a href="qwidget.html">QWidget</a>* parent, const char *name )
    : <a href="qmainwindow.html">QMainWindow</a>( parent, name, WDestructiveClose ),
      pathCombo( 0 ), selectedURL()
{
    readHistory();
    readBookmarks();

    browser = new <a href="qtextbrowser.html">QTextBrowser</a>( this );

<a name="x1437"></a>    browser-&gt;<a href="qtextedit.html#mimeSourceFactory">mimeSourceFactory</a>()-&gt;setFilePath( _path );
    browser-&gt;<a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::Panel | QFrame::Sunken );
<a name="x1439"></a>    <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextedit.html#textChanged">textChanged</a>() ),
             this, SLOT( textChanged() ) );

    <a href="qmainwindow.html#setCentralWidget">setCentralWidget</a>( browser );

<a name="x1425"></a>    if ( !home_.<a href="qstring.html#isEmpty">isEmpty</a>() )
<a name="x1433"></a>        browser-&gt;<a href="qtextbrowser.html#setSource">setSource</a>( home_ );

<a name="x1431"></a>    <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextbrowser.html#highlighted">highlighted</a>( const <a href="qstring.html">QString</a>&amp;) ),
             <a href="qmainwindow.html#statusBar">statusBar</a>(), SLOT( message( const <a href="qstring.html">QString</a>&amp;)) );

    <a href="qwidget.html#resize">resize</a>( 640,700 );

    <a href="qpopupmenu.html">QPopupMenu</a>* file = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&amp;New Window"), this, SLOT( newWindow() ), CTRL+Key_N );
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&amp;Open File"), this, SLOT( openFile() ), CTRL+Key_O );
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&amp;Print"), this, SLOT( print() ), CTRL+Key_P );
    file-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&amp;Close"), this, SLOT( <a href="qwidget.html#close">close</a>() ), CTRL+Key_Q );
<a name="x1386"></a>    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("E&amp;xit"), qApp, SLOT( <a href="qapplication.html#closeAllWindows">closeAllWindows</a>() ), CTRL+Key_X );

    // The same three icons are used twice each.
    <a href="qiconset.html">QIconSet</a> icon_back( QPixmap("back.xpm") );
    <a href="qiconset.html">QIconSet</a> icon_forward( QPixmap("forward.xpm") );
    <a href="qiconset.html">QIconSet</a> icon_home( QPixmap("home.xpm") );

    <a href="qpopupmenu.html">QPopupMenu</a>* go = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    backwardId = go-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( icon_back,
<a name="x1427"></a>                                 <a href="qobject.html#tr">tr</a>("&amp;Backward"), browser, SLOT( <a href="qtextbrowser.html#backward">backward</a>() ),
                                 CTRL+Key_Left );
    forwardId = go-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( icon_forward,
<a name="x1429"></a>                                <a href="qobject.html#tr">tr</a>("&amp;Forward"), browser, SLOT( <a href="qtextbrowser.html#forward">forward</a>() ),
                                CTRL+Key_Right );
<a name="x1432"></a>    go-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( icon_home, tr("&amp;Home"), browser, SLOT( <a href="qtextbrowser.html#home">home</a>() ) );

    <a href="qpopupmenu.html">QPopupMenu</a>* help = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    help-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&amp;About ..."), this, SLOT( about() ) );
    help-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("About &amp;Qt ..."), this, SLOT( aboutQt() ) );

    hist = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    QStringList::Iterator it = history.begin();
    for ( ; it != history.end(); ++it )
        mHistory[ hist-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( *it ) ] = *it;
<a name="x1411"></a>    <a href="qobject.html#connect">connect</a>( hist, SIGNAL( <a href="qpopupmenu.html#activated">activated</a>( int ) ),
             this, SLOT( histChosen( int ) ) );

    bookm = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    bookm-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>( "Add Bookmark" ), this, SLOT( addBookmark() ) );
    bookm-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();

    QStringList::Iterator it2 = bookmarks.begin();
    for ( ; it2 != bookmarks.end(); ++it2 )
        mBookmarks[ bookm-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( *it2 ) ] = *it2;
    <a href="qobject.html#connect">connect</a>( bookm, SIGNAL( <a href="qpopupmenu.html#activated">activated</a>( int ) ),
             this, SLOT( bookmChosen( int ) ) );

    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( <a href="qobject.html#tr">tr</a>("&amp;File"), file );
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( <a href="qobject.html#tr">tr</a>("&amp;Go"), go );
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( <a href="qobject.html#tr">tr</a>( "History" ), hist );
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( <a href="qobject.html#tr">tr</a>( "Bookmarks" ), bookm );
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertSeparator();
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem( <a href="qobject.html#tr">tr</a>("&amp;Help"), help );

    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;setItemEnabled( forwardId, FALSE);
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;setItemEnabled( backwardId, FALSE);
<a name="x1428"></a>    <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextbrowser.html#backwardAvailable">backwardAvailable</a>( bool ) ),
             this, SLOT( setBackwardAvailable( bool ) ) );
<a name="x1430"></a>    <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextbrowser.html#forwardAvailable">forwardAvailable</a>( bool ) ),
             this, SLOT( setForwardAvailable( bool ) ) );


    <a href="qtoolbar.html">QToolBar</a>* toolbar = new <a href="qtoolbar.html">QToolBar</a>( this );
    <a href="qmainwindow.html#addToolBar">addToolBar</a>( toolbar, "Toolbar");
    <a href="qtoolbutton.html">QToolButton</a>* button;

    button = new <a href="qtoolbutton.html">QToolButton</a>( icon_back, tr("Backward"), "", browser, SLOT(<a href="qtextbrowser.html#backward">backward</a>()), toolbar );
    <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextbrowser.html#backwardAvailable">backwardAvailable</a>(bool) ), button, SLOT( <a href="qwidget.html#setEnabled">setEnabled</a>(bool) ) );
    button-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );
    button = new <a href="qtoolbutton.html">QToolButton</a>( icon_forward, tr("Forward"), "", browser, SLOT(<a href="qtextbrowser.html#forward">forward</a>()), toolbar );
    <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextbrowser.html#forwardAvailable">forwardAvailable</a>(bool) ), button, SLOT( <a href="qwidget.html#setEnabled">setEnabled</a>(bool) ) );
    button-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );
    button = new <a href="qtoolbutton.html">QToolButton</a>( icon_home, tr("Home"), "", browser, SLOT(<a href="qtextbrowser.html#home">home</a>()), toolbar );

<a name="x1441"></a>    toolbar-&gt;<a href="qtoolbar.html#addSeparator">addSeparator</a>();

    pathCombo = new <a href="qcombobox.html">QComboBox</a>( TRUE, toolbar );
<a name="x1387"></a>    <a href="qobject.html#connect">connect</a>( pathCombo, SIGNAL( <a href="qcombobox.html#activated">activated</a>( const <a href="qstring.html">QString</a> &amp; ) ),
             this, SLOT( pathSelected( const <a href="qstring.html">QString</a> &amp; ) ) );
<a name="x1442"></a>    toolbar-&gt;<a href="qtoolbar.html#setStretchableWidget">setStretchableWidget</a>( pathCombo );
    <a href="qmainwindow.html#setRightJustification">setRightJustification</a>( TRUE );
    <a href="qmainwindow.html#setDockEnabled">setDockEnabled</a>( DockLeft, FALSE );
    <a href="qmainwindow.html#setDockEnabled">setDockEnabled</a>( DockRight, FALSE );

<a name="x1389"></a>    pathCombo-&gt;<a href="qcombobox.html#insertItem">insertItem</a>( home_ );
    browser-&gt;<a href="qwidget.html#setFocus">setFocus</a>();

}


void <a name="f409"></a>HelpWindow::setBackwardAvailable( bool b)
{
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;setItemEnabled( backwardId, b);
}

void <a name="f410"></a>HelpWindow::setForwardAvailable( bool b)
{
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;setItemEnabled( forwardId, b);
}


void <a name="f411"></a>HelpWindow::textChanged()
{
<a name="x1436"></a>    if ( browser-&gt;<a href="qtextedit.html#documentTitle">documentTitle</a>().isNull() )
<a name="x1435"></a>        <a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Helpviewer - " + browser-&gt;<a href="qtextedit.html#context">context</a>() );
    else
        <a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Helpviewer - " + browser-&gt;<a href="qtextedit.html#documentTitle">documentTitle</a>() ) ;

    selectedURL = browser-&gt;<a href="qtextedit.html#context">context</a>();

    if ( !selectedURL.isEmpty() &amp;&amp; pathCombo ) {
        bool exists = FALSE;
        int i;
<a name="x1388"></a>        for ( i = 0; i &lt; pathCombo-&gt;<a href="qcombobox.html#count">count</a>(); ++i ) {
<a name="x1391"></a>            if ( pathCombo-&gt;<a href="qcombobox.html#text">text</a>( i ) == selectedURL ) {
                exists = TRUE;
                break;
            }
        }
        if ( !exists ) {
            pathCombo-&gt;<a href="qcombobox.html#insertItem">insertItem</a>( selectedURL, 0 );
<a name="x1390"></a>            pathCombo-&gt;<a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( 0 );
            mHistory[ hist-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( selectedURL ) ] = selectedURL;
        } else
            pathCombo-&gt;<a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( i );
        selectedURL = <a href="qstring.html#QString-null">QString::null</a>;
    }
}

HelpWindow::~HelpWindow()
{
    history.clear();
    QMap&lt;int, QString&gt;::Iterator it = mHistory.begin();
    for ( ; it != mHistory.end(); ++it )
        history.append( *it );

<a name="x1392"></a>    <a href="qfile.html">QFile</a> f( QDir::<a href="qdir.html#currentDirPath">currentDirPath</a>() + "/.history" );
<a name="x1395"></a>    f.<a href="qfile.html#open">open</a>( <a href="qfile.html#open">IO_WriteOnly</a> );
    <a href="qdatastream.html">QDataStream</a> s( &amp;f );
    s &lt;&lt; history;
<a name="x1393"></a>    f.<a href="qfile.html#close">close</a>();

    bookmarks.clear();
    QMap&lt;int, QString&gt;::Iterator it2 = mBookmarks.begin();
    for ( ; it2 != mBookmarks.end(); ++it2 )
        bookmarks.append( *it2 );

    <a href="qfile.html">QFile</a> f2( QDir::<a href="qdir.html#currentDirPath">currentDirPath</a>() + "/.bookmarks" );
    f2.<a href="qfile.html#open">open</a>( IO_WriteOnly );
    <a href="qdatastream.html">QDataStream</a> s2( &amp;f2 );
    s2 &lt;&lt; bookmarks;
    f2.<a href="qfile.html#close">close</a>();
}

void <a name="f412"></a>HelpWindow::about()
{
<a name="x1400"></a>    QMessageBox::<a href="qmessagebox.html#about">about</a>( this, "HelpViewer Example",
                        "&lt;p&gt;This example implements a simple HTML help viewer "
                        "using Qt's rich text capabilities&lt;/p&gt;"
                        "&lt;p&gt;It's just about 100 lines of C++ code, so don't expect too much :-)&lt;/p&gt;"
                        );
}


void <a name="f413"></a>HelpWindow::aboutQt()
{
<a name="x1401"></a>    QMessageBox::<a href="qmessagebox.html#aboutQt">aboutQt</a>( this, "QBrowser" );
}

void <a name="f414"></a>HelpWindow::openFile()
{
#ifndef QT_NO_FILEDIALOG
<a name="x1396"></a>    <a href="qstring.html">QString</a> fn = QFileDialog::<a href="qfiledialog.html#getOpenFileName">getOpenFileName</a>( QString::null, QString::null, this );
    if ( !fn.<a href="qstring.html#isEmpty">isEmpty</a>() )
        browser-&gt;<a href="qtextbrowser.html#setSource">setSource</a>( fn );
#endif
}

void <a name="f415"></a>HelpWindow::newWindow()
{
<a name="x1434"></a>    ( new HelpWindow(browser-&gt;<a href="qtextbrowser.html#source">source</a>(), "qbrowser") )-&gt;show();
}

void <a name="f416"></a>HelpWindow::print()
{
#ifndef QT_NO_PRINTER
    <a href="qprinter.html">QPrinter</a> printer;//(QPrinter::HighResolution );
<a name="x1413"></a>    printer.<a href="qprinter.html#setFullPage">setFullPage</a>(TRUE);
<a name="x1414"></a>    if ( printer.<a href="qprinter.html#setup">setup</a>( this ) ) {
        <a href="qpainter.html">QPainter</a> p( &amp;printer );
<a name="x1406"></a>        <a href="qpaintdevicemetrics.html">QPaintDeviceMetrics</a> metrics(p.<a href="qpainter.html#device">device</a>());
<a name="x1403"></a>        int dpix = metrics.<a href="qpaintdevicemetrics.html#logicalDpiX">logicalDpiX</a>();
<a name="x1404"></a>        int dpiy = metrics.<a href="qpaintdevicemetrics.html#logicalDpiY">logicalDpiY</a>();
        const int margin = 72; // pt
        <a href="qrect.html">QRect</a> body(margin*dpix/72, margin*dpiy/72,
<a name="x1405"></a>                   metrics.<a href="qpaintdevicemetrics.html#width">width</a>()-margin*dpix/72*2,
<a name="x1402"></a>                   metrics.<a href="qpaintdevicemetrics.html#height">height</a>()-margin*dpiy/72*2 );
        <a href="qfont.html">QFont</a> font("times", 10);
        <a href="qstringlist.html">QStringList</a> filePaths = browser-&gt;<a href="qtextedit.html#mimeSourceFactory">mimeSourceFactory</a>()-&gt;filePath();
        <a href="qstring.html">QString</a> file;
        QStringList::Iterator it = filePaths.<a href="qvaluelist.html#begin">begin</a>();
        for ( ; it != filePaths.<a href="qvaluelist.html#end">end</a>(); ++it ) {
            file = QUrl( *it, QUrl( browser-&gt;<a href="qtextbrowser.html#source">source</a>() ).path() ).path();
<a name="x1394"></a>            if ( QFile::<a href="qfile.html#exists">exists</a>( file ) )
                break;
            else
                file = QString::null;
        }
        if ( file.<a href="qstring.html#isEmpty">isEmpty</a>() )
            return;
        <a href="qfile.html">QFile</a> f( file );
        if ( !f.<a href="qfile.html#open">open</a>( <a href="qfile.html#open">IO_ReadOnly</a> ) )
            return;
        <a href="qtextstream.html">QTextStream</a> ts( &amp;f );
<a name="x1440"></a><a name="x1438"></a>        <a href="qsimplerichtext.html">QSimpleRichText</a> richText( ts.<a href="qtextstream.html#read">read</a>(), font, browser-&gt;<a href="qtextedit.html#context">context</a>(), browser-&gt;<a href="qtextedit.html#styleSheet">styleSheet</a>(),
                                  browser-&gt;<a href="qtextedit.html#mimeSourceFactory">mimeSourceFactory</a>(), body.<a href="qrect.html#height">height</a>() );
<a name="x1424"></a>        richText.<a href="qsimplerichtext.html#setWidth">setWidth</a>( &amp;p, body.<a href="qrect.html#width">width</a>() );
        <a href="qrect.html">QRect</a> view( body );
        int page = 1;
        do {
<a name="x1422"></a><a name="x1420"></a>            richText.<a href="qsimplerichtext.html#draw">draw</a>( &amp;p, body.<a href="qrect.html#left">left</a>(), body.<a href="qrect.html#top">top</a>(), view, colorGroup() );
<a name="x1418"></a>            view.<a href="qrect.html#moveBy">moveBy</a>( 0, body.<a href="qrect.html#height">height</a>() );
<a name="x1410"></a>            p.<a href="qpainter.html#translate">translate</a>( 0 , -body.<a href="qrect.html#height">height</a>() );
            p.<a href="qpainter.html#setFont">setFont</a>( font );
<a name="x1426"></a><a name="x1419"></a><a name="x1408"></a>            p.<a href="qpainter.html#drawText">drawText</a>( view.<a href="qrect.html#right">right</a>() - p.<a href="qpainter.html#fontMetrics">fontMetrics</a>().width( QString::<a href="qstring.html#number">number</a>(page) ),
<a name="x1415"></a>                        view.<a href="qrect.html#bottom">bottom</a>() + p.<a href="qpainter.html#fontMetrics">fontMetrics</a>().ascent() + 5, QString::number(page) );
<a name="x1423"></a>            if ( view.<a href="qrect.html#top">top</a>()  &gt;= richText.<a href="qsimplerichtext.html#height">height</a>() )
                break;
<a name="x1412"></a>            printer.<a href="qprinter.html#newPage">newPage</a>();
            page++;
        } while (TRUE);
    }
#endif
}

void <a name="f417"></a>HelpWindow::pathSelected( const <a href="qstring.html">QString</a> &amp;_path )
{
    browser-&gt;<a href="qtextbrowser.html#setSource">setSource</a>( _path );
    QMap&lt;int, QString&gt;::Iterator it = mHistory.begin();
    bool exists = FALSE;
    for ( ; it != mHistory.end(); ++it ) {
        if ( *it == _path ) {
            exists = TRUE;
            break;
        }
    }
    if ( !exists )
        mHistory[ hist-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( _path ) ] = _path;
}

void <a name="f418"></a>HelpWindow::readHistory()
{
    if ( QFile::<a href="qfile.html#exists">exists</a>( QDir::<a href="qdir.html#currentDirPath">currentDirPath</a>() + "/.history" ) ) {
        <a href="qfile.html">QFile</a> f( QDir::<a href="qdir.html#currentDirPath">currentDirPath</a>() + "/.history" );
        f.<a href="qfile.html#open">open</a>( IO_ReadOnly );
        <a href="qdatastream.html">QDataStream</a> s( &amp;f );
        s &gt;&gt; history;
        f.<a href="qfile.html#close">close</a>();
        while ( history.count() &gt; 20 )
            history.remove( history.begin() );
    }
}

void <a name="f419"></a>HelpWindow::readBookmarks()
{
    if ( QFile::<a href="qfile.html#exists">exists</a>( QDir::<a href="qdir.html#currentDirPath">currentDirPath</a>() + "/.bookmarks" ) ) {
        <a href="qfile.html">QFile</a> f( QDir::<a href="qdir.html#currentDirPath">currentDirPath</a>() + "/.bookmarks" );
        f.<a href="qfile.html#open">open</a>( IO_ReadOnly );
        <a href="qdatastream.html">QDataStream</a> s( &amp;f );
        s &gt;&gt; bookmarks;
        f.<a href="qfile.html#close">close</a>();
    }
}

void <a name="f420"></a>HelpWindow::histChosen( int i )
{
    if ( mHistory.contains( i ) )
        browser-&gt;<a href="qtextbrowser.html#setSource">setSource</a>( mHistory[ i ] );
}

void <a name="f421"></a>HelpWindow::bookmChosen( int i )
{
    if ( mBookmarks.contains( i ) )
        browser-&gt;<a href="qtextbrowser.html#setSource">setSource</a>( mBookmarks[ i ] );
}

void <a name="f422"></a>HelpWindow::addBookmark()
{
    mBookmarks[ bookm-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( <a href="qwidget.html#caption">caption</a>() ) ] = browser-&gt;<a href="qtextedit.html#context">context</a>();
}
</pre>

<p> <hr>
<p> Main:
<p> <pre>/****************************************************************************
** $Id:  qt/main.cpp   3.0.2   edited Oct 12 12:18 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "helpwindow.h"
#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qwindowsstyle-h.html">qwindowsstyle.h</a>&gt;
#include &lt;<a href="qstylesheet-h.html">qstylesheet.h</a>&gt;
#include &lt;stdlib.h&gt;


int main( int argc, char ** argv )
{
<a name="x1451"></a>    QApplication::<a href="qapplication.html#setColorSpec">setColorSpec</a>( QApplication::ManyColor );
    <a href="qapplication.html">QApplication</a> a(argc, argv);

    <a href="qstring.html">QString</a> home;
    if (argc &gt; 1)
        home = argv[1];
    else
        home = QString(getenv("QTDIR")) + "/doc/html/index.html";


    HelpWindow *help = new HelpWindow(home, ".", 0, "help viewer");
    help-&gt;<a href="qwidget.html#setCaption">setCaption</a>("Qt Example - Helpviewer");
<a name="x1447"></a>    if ( QApplication::<a href="qapplication.html#desktop">desktop</a>()-&gt;width() &gt; 400
         &amp;&amp; QApplication::<a href="qapplication.html#desktop">desktop</a>()-&gt;height() &gt; 500 )
        help-&gt;<a href="qwidget.html#show">show</a>();
    else
<a name="x1455"></a>        help-&gt;<a href="qwidget.html#showMaximized">showMaximized</a>();

<a name="x1449"></a>    QObject::<a href="qobject.html#connect">connect</a>( &amp;a, SIGNAL(<a href="qapplication.html#lastWindowClosed">lastWindowClosed</a>()),
<a name="x1450"></a>                      &amp;a, SLOT(<a href="qapplication.html#quit">quit</a>()) );

    return a.<a href="qapplication.html#exec">exec</a>();
}
</pre>

<p>See also <a href="examples.html">Examples</a>.

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<a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt version 3.0.2</div>
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