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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 3.3.8 edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA. 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 sourceChanged( const <a href="qstring.html">QString</a>& );
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="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 3.3.8 edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA. 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 <<a href="qobjectlist-h.html">qobjectlist.h</a>>
#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="f350"></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 )
{
readHistory();
readBookmarks();
browser = new <a href="qtextbrowser.html">QTextBrowser</a>( this );
<a name="x1030"></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="x1027"></a> <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextbrowser.html#sourceChanged">sourceChanged</a>(const <a href="qstring.html">QString</a>& ) ),
this, SLOT( sourceChanged( const <a href="qstring.html">QString</a>&) ) );
<a href="qmainwindow.html#setCentralWidget">setCentralWidget</a>( browser );
if ( !home_.<a href="qstring.html#isEmpty">isEmpty</a>() )
<a name="x1025"></a> browser-><a href="qtextbrowser.html#setSource">setSource</a>( home_ );
<a name="x1023"></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="x980"></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="x1019"></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="x1021"></a> <a href="qobject.html#tr">tr</a>("&Forward"), browser, SLOT( <a href="qtextbrowser.html#forward">forward</a>() ),
CTRL+Key_Right );
<a name="x1024"></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="x1004"></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="x1020"></a> <a href="qobject.html#connect">connect</a>( browser, SIGNAL( <a href="qtextbrowser.html#backwardAvailable">backwardAvailable</a>( bool ) ),
this, SLOT( setBackwardAvailable( bool ) ) );
<a name="x1022"></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 name="x1035"></a> <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="x1033"></a> toolbar-><a href="qtoolbar.html#addSeparator">addSeparator</a>();
pathCombo = new <a href="qcombobox.html">QComboBox</a>( TRUE, toolbar );
<a name="x981"></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="x1034"></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="x983"></a> pathCombo-><a href="qcombobox.html#insertItem">insertItem</a>( home_ );
browser-><a href="qwidget.html#setFocus">setFocus</a>();
}
void <a name="f351"></a>HelpWindow::setBackwardAvailable( bool b)
{
<a href="qmainwindow.html#menuBar">menuBar</a>()->setItemEnabled( backwardId, b);
}
void <a name="f352"></a>HelpWindow::setForwardAvailable( bool b)
{
<a href="qmainwindow.html#menuBar">menuBar</a>()->setItemEnabled( forwardId, b);
}
void <a name="f353"></a>HelpWindow::sourceChanged( const <a href="qstring.html">QString</a>& url )
{
<a name="x1029"></a> if ( browser-><a href="qtextedit.html#documentTitle">documentTitle</a>().isNull() )
<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Helpviewer - " + url );
else
<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Helpviewer - " + browser-><a href="qtextedit.html#documentTitle">documentTitle</a>() ) ;
if ( !url.<a href="qstring.html#isEmpty">isEmpty</a>() && pathCombo ) {
bool exists = FALSE;
int i;
<a name="x982"></a> for ( i = 0; i < pathCombo-><a href="qcombobox.html#count">count</a>(); ++i ) {
<a name="x985"></a> if ( pathCombo-><a href="qcombobox.html#text">text</a>( i ) == url ) {
exists = TRUE;
break;
}
}
if ( !exists ) {
pathCombo-><a href="qcombobox.html#insertItem">insertItem</a>( url, 0 );
<a name="x984"></a> pathCombo-><a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( 0 );
mHistory[ hist-><a href="qmenudata.html#insertItem">insertItem</a>( url ) ] = url;
} else
pathCombo-><a href="qcombobox.html#setCurrentItem">setCurrentItem</a>( i );
}
}
HelpWindow::~HelpWindow()
{
history = mHistory.values();
<a name="x986"></a> <a href="qfile.html">QFile</a> f( QDir::<a href="qdir.html#currentDirPath">currentDirPath</a>() + "/.history" );
<a name="x989"></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="x987"></a> f.<a href="qfile.html#close">close</a>();
bookmarks = mBookmarks.values();
<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="f354"></a>HelpWindow::about()
{
<a name="x994"></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 400 lines of C++ code, so don't expect too much :-)</p>"
);
}
void <a name="f355"></a>HelpWindow::aboutQt()
{
<a name="x995"></a> QMessageBox::<a href="qmessagebox.html#aboutQt">aboutQt</a>( this, "QBrowser" );
}
void <a name="f356"></a>HelpWindow::openFile()
{
#ifndef QT_NO_FILEDIALOG
<a href="qstring.html">QString</a> fn = QFileDialog::<a href="qfiledialog.html#getOpenFileName">getOpenFileName</a>( <a href="qstring.html#QString-null">QString::null</a>, 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="f357"></a>HelpWindow::newWindow()
{
<a name="x1026"></a> ( new HelpWindow(browser-><a href="qtextbrowser.html#source">source</a>(), "qbrowser") )->show();
}
void <a name="f358"></a>HelpWindow::print()
{
#ifndef QT_NO_PRINTER
<a href="qprinter.html">QPrinter</a> printer( QPrinter::HighResolution );
<a name="x1006"></a> printer.<a href="qprinter.html#setFullPage">setFullPage</a>(TRUE);
<a name="x1007"></a> if ( printer.<a href="qprinter.html#setup">setup</a>( this ) ) {
<a href="qpainter.html">QPainter</a> p( &printer );
<a name="x1002"></a> if( !p.<a href="qpainter.html#isActive">isActive</a>() ) // starting printing failed
return;
<a name="x999"></a> <a href="qpaintdevicemetrics.html">QPaintDeviceMetrics</a> metrics(p.<a href="qpainter.html#device">device</a>());
<a name="x997"></a> int dpiy = metrics.<a href="qpaintdevicemetrics.html#logicalDpiY">logicalDpiY</a>();
int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
<a name="x998"></a><a name="x996"></a> <a href="qrect.html">QRect</a> view( margin, margin, metrics.<a href="qpaintdevicemetrics.html#width">width</a>() - 2*margin, metrics.<a href="qpaintdevicemetrics.html#height">height</a>() - 2*margin );
<a name="x1032"></a> <a href="qsimplerichtext.html">QSimpleRichText</a> richText( browser-><a href="qtextedit.html#text">text</a>(),
QFont(),
<a name="x1028"></a> browser-><a href="qtextedit.html#context">context</a>(),
<a name="x1031"></a> browser-><a href="qtextedit.html#styleSheet">styleSheet</a>(),
browser-><a href="qtextedit.html#mimeSourceFactory">mimeSourceFactory</a>(),
view.<a href="qrect.html#height">height</a>() );
<a name="x1016"></a> richText.<a href="qsimplerichtext.html#setWidth">setWidth</a>( &p, view.<a href="qrect.html#width">width</a>() );
int page = 1;
do {
<a name="x1014"></a> richText.<a href="qsimplerichtext.html#draw">draw</a>( &p, margin, margin, view, colorGroup() );
<a name="x1010"></a> view.<a href="qrect.html#moveBy">moveBy</a>( 0, view.<a href="qrect.html#height">height</a>() );
p.<a href="qpainter.html#translate">translate</a>( 0 , -view.<a href="qrect.html#height">height</a>() );
<a name="x1018"></a><a name="x1001"></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="x1008"></a> view.<a href="qrect.html#bottom">bottom</a>() + p.<a href="qpainter.html#fontMetrics">fontMetrics</a>().ascent() + 5, QString::number(page) );
<a name="x1015"></a> if ( view.<a href="qrect.html#top">top</a>() - margin >= richText.<a href="qsimplerichtext.html#height">height</a>() )
break;
<a name="x1005"></a> printer.<a href="qprinter.html#newPage">newPage</a>();
page++;
} while (TRUE);
}
#endif
}
void <a name="f359"></a>HelpWindow::pathSelected( const <a href="qstring.html">QString</a> &_path )
{
browser-><a href="qtextbrowser.html#setSource">setSource</a>( _path );
if ( mHistory.values().contains(_path) )
mHistory[ hist-><a href="qmenudata.html#insertItem">insertItem</a>( _path ) ] = _path;
}
void <a name="f360"></a>HelpWindow::readHistory()
{
<a name="x988"></a> 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>( <a href="qfile.html#open">IO_ReadOnly</a> );
<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="f361"></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="f362"></a>HelpWindow::histChosen( int i )
{
if ( mHistory.contains( i ) )
browser-><a href="qtextbrowser.html#setSource">setSource</a>( mHistory[ i ] );
}
void <a name="f363"></a>HelpWindow::bookmChosen( int i )
{
if ( mBookmarks.contains( i ) )
browser-><a href="qtextbrowser.html#setSource">setSource</a>( mBookmarks[ i ] );
}
void <a name="f364"></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 3.3.8 edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA. 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="qdir-h.html">qdir.h</a>>
#include <stdlib.h>
int main( int argc, char ** argv )
{
<a name="x1041"></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 {
// Use a hard coded path. It is only an example.
home = QDir( "../../doc/html/index.html" ).absPath();
}
HelpWindow *help = new HelpWindow(home, ".", 0, "help viewer");
help-><a href="qwidget.html#setCaption">setCaption</a>("Qt Example - Helpviewer");
<a name="x1037"></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="x1045"></a> help-><a href="qwidget.html#showMaximized">showMaximized</a>();
<a name="x1039"></a> QObject::<a href="qobject.html#connect">connect</a>( &a, SIGNAL(<a href="qapplication.html#lastWindowClosed">lastWindowClosed</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>.
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<td align=right><div align=right>Qt 3.3.8</div>
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