<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /tmp/qt-3.0-reggie-28534/qt-x11-free-3.0.2/examples/helpviewer/helpviewer.doc:4 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Simple HTML Help Browser</title> <style type="text/css"><!-- h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <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 <<a href="qmainwindow-h.html">qmainwindow.h</a>> #include <<a href="qtextbrowser-h.html">qtextbrowser.h</a>> #include <<a href="qstringlist-h.html">qstringlist.h</a>> #include <<a href="qmap-h.html">qmap.h</a>> #include <<a href="qdir-h.html">qdir.h</a>> 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>& home_, const <a href="qstring.html">QString</a>& 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> & ); 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><int, QString> 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 <<a href="qstatusbar-h.html">qstatusbar.h</a>> #include <<a href="qpixmap-h.html">qpixmap.h</a>> #include <<a href="qpopupmenu-h.html">qpopupmenu.h</a>> #include <<a href="qmenubar-h.html">qmenubar.h</a>> #include <<a href="qtoolbar-h.html">qtoolbar.h</a>> #include <<a href="qtoolbutton-h.html">qtoolbutton.h</a>> #include <<a href="qiconset-h.html">qiconset.h</a>> #include <<a href="qfile-h.html">qfile.h</a>> #include <<a href="qtextstream-h.html">qtextstream.h</a>> #include <<a href="qstylesheet-h.html">qstylesheet.h</a>> #include <<a href="qmessagebox-h.html">qmessagebox.h</a>> #include <<a href="qfiledialog-h.html">qfiledialog.h</a>> #include <<a href="qapplication-h.html">qapplication.h</a>> #include <<a href="qcombobox-h.html">qcombobox.h</a>> #include <<a href="qevent-h.html">qevent.h</a>> #include <<a href="qlineedit-h.html">qlineedit.h</a>> #include <qobjectlist.h> #include <<a href="qfileinfo-h.html">qfileinfo.h</a>> #include <<a href="qfile-h.html">qfile.h</a>> #include <<a href="qdatastream-h.html">qdatastream.h</a>> #include <<a href="qprinter-h.html">qprinter.h</a>> #include <<a href="qsimplerichtext-h.html">qsimplerichtext.h</a>> #include <<a href="qpainter-h.html">qpainter.h</a>> #include <<a href="qpaintdevicemetrics-h.html">qpaintdevicemetrics.h</a>> #include <ctype.h> <a name="f408"></a>HelpWindow::HelpWindow( const <a href="qstring.html">QString</a>& home_, const <a href="qstring.html">QString</a>& _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-><a href="qtextedit.html#mimeSourceFactory">mimeSourceFactory</a>()->setFilePath( _path ); browser-><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-><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>&) ), <a href="qmainwindow.html#statusBar">statusBar</a>(), SLOT( message( const <a href="qstring.html">QString</a>&)) ); <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-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&New Window"), this, SLOT( newWindow() ), CTRL+Key_N ); file-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&Open File"), this, SLOT( openFile() ), CTRL+Key_O ); file-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&Print"), this, SLOT( print() ), CTRL+Key_P ); file-><a href="qmenudata.html#insertSeparator">insertSeparator</a>(); file-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&Close"), this, SLOT( <a href="qwidget.html#close">close</a>() ), CTRL+Key_Q ); <a name="x1386"></a> file-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("E&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-><a href="qmenudata.html#insertItem">insertItem</a>( icon_back, <a name="x1427"></a> <a href="qobject.html#tr">tr</a>("&Backward"), browser, SLOT( <a href="qtextbrowser.html#backward">backward</a>() ), CTRL+Key_Left ); forwardId = go-><a href="qmenudata.html#insertItem">insertItem</a>( icon_forward, <a name="x1429"></a> <a href="qobject.html#tr">tr</a>("&Forward"), browser, SLOT( <a href="qtextbrowser.html#forward">forward</a>() ), CTRL+Key_Right ); <a name="x1432"></a> go-><a href="qmenudata.html#insertItem">insertItem</a>( icon_home, tr("&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-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("&About ..."), this, SLOT( about() ) ); help-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("About &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-><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-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>( "Add Bookmark" ), this, SLOT( addBookmark() ) ); bookm-><a href="qmenudata.html#insertSeparator">insertSeparator</a>(); QStringList::Iterator it2 = bookmarks.begin(); for ( ; it2 != bookmarks.end(); ++it2 ) mBookmarks[ bookm-><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>()->insertItem( <a href="qobject.html#tr">tr</a>("&File"), file ); <a href="qmainwindow.html#menuBar">menuBar</a>()->insertItem( <a href="qobject.html#tr">tr</a>("&Go"), go ); <a href="qmainwindow.html#menuBar">menuBar</a>()->insertItem( <a href="qobject.html#tr">tr</a>( "History" ), hist ); <a href="qmainwindow.html#menuBar">menuBar</a>()->insertItem( <a href="qobject.html#tr">tr</a>( "Bookmarks" ), bookm ); <a href="qmainwindow.html#menuBar">menuBar</a>()->insertSeparator(); <a href="qmainwindow.html#menuBar">menuBar</a>()->insertItem( <a href="qobject.html#tr">tr</a>("&Help"), help ); <a href="qmainwindow.html#menuBar">menuBar</a>()->setItemEnabled( forwardId, FALSE); <a href="qmainwindow.html#menuBar">menuBar</a>()->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-><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-><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-><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> & ) ), this, SLOT( pathSelected( const <a href="qstring.html">QString</a> & ) ) ); <a name="x1442"></a> toolbar-><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-><a href="qcombobox.html#insertItem">insertItem</a>( home_ ); browser-><a href="qwidget.html#setFocus">setFocus</a>(); } void <a name="f409"></a>HelpWindow::setBackwardAvailable( bool b) { <a href="qmainwindow.html#menuBar">menuBar</a>()->setItemEnabled( backwardId, b); } void <a name="f410"></a>HelpWindow::setForwardAvailable( bool b) { <a href="qmainwindow.html#menuBar">menuBar</a>()->setItemEnabled( forwardId, b); } void <a name="f411"></a>HelpWindow::textChanged() { <a name="x1436"></a> if ( browser-><a href="qtextedit.html#documentTitle">documentTitle</a>().isNull() ) <a name="x1435"></a> <a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Helpviewer - " + browser-><a href="qtextedit.html#context">context</a>() ); else <a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Helpviewer - " + browser-><a href="qtextedit.html#documentTitle">documentTitle</a>() ) ; selectedURL = browser-><a href="qtextedit.html#context">context</a>(); if ( !selectedURL.isEmpty() && pathCombo ) { bool exists = FALSE; int i; <a name="x1388"></a> for ( i = 0; i < pathCombo-><a href="qcombobox.html#count">count</a>(); ++i ) { <a name="x1391"></a> if ( pathCombo-><a href="qcombobox.html#text">text</a>( i ) == selectedURL ) { exists = TRUE; break; } } if ( !exists ) { pathCombo-><a href="qcombobox.html#insertItem">insertItem</a>( selectedURL, 0 ); <a name="x1390"></a> pathCombo-><a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( 0 ); mHistory[ hist-><a href="qmenudata.html#insertItem">insertItem</a>( selectedURL ) ] = selectedURL; } else pathCombo-><a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( i ); selectedURL = <a href="qstring.html#QString-null">QString::null</a>; } } HelpWindow::~HelpWindow() { history.clear(); QMap<int, QString>::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( &f ); s << history; <a name="x1393"></a> f.<a href="qfile.html#close">close</a>(); bookmarks.clear(); QMap<int, QString>::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( &f2 ); s2 << 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", "<p>This example implements a simple HTML help viewer " "using Qt's rich text capabilities</p>" "<p>It's just about 100 lines of C++ code, so don't expect too much :-)</p>" ); } 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-><a href="qtextbrowser.html#setSource">setSource</a>( fn ); #endif } void <a name="f415"></a>HelpWindow::newWindow() { <a name="x1434"></a> ( new HelpWindow(browser-><a href="qtextbrowser.html#source">source</a>(), "qbrowser") )->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( &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-><a href="qtextedit.html#mimeSourceFactory">mimeSourceFactory</a>()->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-><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( &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-><a href="qtextedit.html#context">context</a>(), browser-><a href="qtextedit.html#styleSheet">styleSheet</a>(), browser-><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>( &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>( &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>() >= 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> &_path ) { browser-><a href="qtextbrowser.html#setSource">setSource</a>( _path ); QMap<int, QString>::Iterator it = mHistory.begin(); bool exists = FALSE; for ( ; it != mHistory.end(); ++it ) { if ( *it == _path ) { exists = TRUE; break; } } if ( !exists ) mHistory[ hist-><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( &f ); s >> history; f.<a href="qfile.html#close">close</a>(); while ( history.count() > 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( &f ); s >> bookmarks; f.<a href="qfile.html#close">close</a>(); } } void <a name="f420"></a>HelpWindow::histChosen( int i ) { if ( mHistory.contains( i ) ) browser-><a href="qtextbrowser.html#setSource">setSource</a>( mHistory[ i ] ); } void <a name="f421"></a>HelpWindow::bookmChosen( int i ) { if ( mBookmarks.contains( i ) ) browser-><a href="qtextbrowser.html#setSource">setSource</a>( mBookmarks[ i ] ); } void <a name="f422"></a>HelpWindow::addBookmark() { mBookmarks[ bookm-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qwidget.html#caption">caption</a>() ) ] = browser-><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 <<a href="qapplication-h.html">qapplication.h</a>> #include <<a href="qwindowsstyle-h.html">qwindowsstyle.h</a>> #include <<a href="qstylesheet-h.html">qstylesheet.h</a>> #include <stdlib.h> 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 > 1) home = argv[1]; else home = QString(getenv("QTDIR")) + "/doc/html/index.html"; HelpWindow *help = new HelpWindow(home, ".", 0, "help viewer"); help-><a href="qwidget.html#setCaption">setCaption</a>("Qt Example - Helpviewer"); <a name="x1447"></a> if ( QApplication::<a href="qapplication.html#desktop">desktop</a>()->width() > 400 && QApplication::<a href="qapplication.html#desktop">desktop</a>()->height() > 500 ) help-><a href="qwidget.html#show">show</a>(); else <a name="x1455"></a> help-><a href="qwidget.html#showMaximized">showMaximized</a>(); <a name="x1449"></a> QObject::<a href="qobject.html#connect">connect</a>( &a, SIGNAL(<a href="qapplication.html#lastWindowClosed">lastWindowClosed</a>()), <a name="x1450"></a> &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>. <!-- eof --> <p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2001 <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> </table></div></address></body> </html>