menu-example.html

来自「QT 下载资料仅供参考」· HTML 代码 · 共 427 行 · 第 1/2 页

<a name="f500"></a>MenuExample::MenuExample( <a href="qwidget.html">QWidget</a> *parent, const char *name )
    : <a href="qwidget.html">QWidget</a>( parent, name )
{
    <a href="qpixmap.html">QPixmap</a> p1( p1_xpm );
    <a href="qpixmap.html">QPixmap</a> p2( p2_xpm );
    <a href="qpixmap.html">QPixmap</a> p3( p3_xpm );

    <a href="qpopupmenu.html">QPopupMenu</a> *print = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    <a href="qapplication.html#Q_CHECK_PTR">Q_CHECK_PTR</a>( print );
<a name="x1869"></a>    print-&gt;<a href="qpopupmenu.html#insertTearOffHandle">insertTearOffHandle</a>();
<a name="x1860"></a>    print-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Print to printer", this, SLOT(printer()) );
    print-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "Print to &amp;file", this, SLOT(file()) );
    print-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "Print to fa&amp;x", this, SLOT(fax()) );
<a name="x1861"></a>    print-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
    print-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "Printer &amp;Setup", this, SLOT(printerSetup()) );

    <a href="qpopupmenu.html">QPopupMenu</a> *file = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    <a href="qapplication.html#Q_CHECK_PTR">Q_CHECK_PTR</a>( file );
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( p1, "&amp;Open",  this, SLOT(open()), CTRL+Key_O );
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( p2, "&amp;New", this, SLOT(news()), CTRL+Key_N );
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( p3, "&amp;Save", this, SLOT(save()), CTRL+Key_S );
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Close", this, SLOT(closeDoc()), CTRL+Key_W );
    file-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Print", print, CTRL+Key_P );
    file-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "E&amp;xit",  qApp, SLOT(<a href="qapplication.html#quit">quit</a>()), CTRL+Key_Q );

    <a href="qpopupmenu.html">QPopupMenu</a> *edit = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    <a href="qapplication.html#Q_CHECK_PTR">Q_CHECK_PTR</a>( edit );
    int undoID = edit-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Undo", this, SLOT(undo()) );
    int redoID = edit-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Redo", this, SLOT(redo()) );
<a name="x1864"></a>    edit-&gt;<a href="qmenudata.html#setItemEnabled">setItemEnabled</a>( undoID, FALSE );
    edit-&gt;<a href="qmenudata.html#setItemEnabled">setItemEnabled</a>( redoID, FALSE );

    <a href="qpopupmenu.html">QPopupMenu</a>* options = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
    <a href="qapplication.html#Q_CHECK_PTR">Q_CHECK_PTR</a>( options );
    options-&gt;<a href="qpopupmenu.html#insertTearOffHandle">insertTearOffHandle</a>();
    options-&gt;<a href="qwidget.html#setCaption">setCaption</a>("Options");
    options-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Normal Font", this, SLOT(normal()) );
    options-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();

<a name="x1872"></a>    options-&gt;<a href="qwidget.html#polish">polish</a>(); // adjust system settings
<a name="x1871"></a>    <a href="qfont.html">QFont</a> f = options-&gt;<a href="qwidget.html#font">font</a>();
<a name="x1852"></a>    f.<a href="qfont.html#setBold">setBold</a>( TRUE );
    boldID = options-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( new MyMenuItem( "Bold", f ) );
<a name="x1862"></a>    options-&gt;<a href="qmenudata.html#setAccel">setAccel</a>( CTRL+Key_B, boldID );
<a name="x1859"></a>    options-&gt;<a href="qmenudata.html#connectItem">connectItem</a>( boldID, this, SLOT(bold()) );
    f = <a href="qwidget.html#font">font</a>();
<a name="x1853"></a>    f.<a href="qfont.html#setUnderline">setUnderline</a>( TRUE );
    underlineID = options-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( new MyMenuItem( "Underline", f ) );
    options-&gt;<a href="qmenudata.html#setAccel">setAccel</a>( CTRL+Key_U, underlineID );
    options-&gt;<a href="qmenudata.html#connectItem">connectItem</a>( underlineID, this, SLOT(underline()) );

    isBold = FALSE;
    isUnderline = FALSE;
<a name="x1870"></a>    options-&gt;<a href="qpopupmenu.html#setCheckable">setCheckable</a>( TRUE );


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

    menu = new <a href="qmenubar.html">QMenuBar</a>( this );
    <a href="qapplication.html#Q_CHECK_PTR">Q_CHECK_PTR</a>( menu );
    menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;File", file );
    menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Edit", edit );
    menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Options", options );
    menu-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
    menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>( "&amp;Help", help );
<a name="x1858"></a>    menu-&gt;<a href="qmenubar.html#setSeparator">setSeparator</a>( QMenuBar::InWindowsStyle );

    label = new <a href="qlabel.html">QLabel</a>( this );
    <a href="qapplication.html#Q_CHECK_PTR">Q_CHECK_PTR</a>( label );
<a name="x1875"></a>    label-&gt;<a href="qwidget.html#setGeometry">setGeometry</a>( 20, rect().center().y()-20, width()-40, 40 );
    label-&gt;<a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::Box | QFrame::Raised );
<a name="x1855"></a>    label-&gt;<a href="qframe.html#setLineWidth">setLineWidth</a>( 1 );
    label-&gt;<a href="qlabel.html#setAlignment">setAlignment</a>( AlignCenter );

    <a href="qobject.html#connect">connect</a>( this,  SIGNAL(explain(const <a href="qstring.html">QString</a>&amp;)),
             label, SLOT(<a href="qlabel.html#setText">setText</a>(const <a href="qstring.html">QString</a>&amp;)) );

    <a href="qwidget.html#setMinimumSize">setMinimumSize</a>( 100, 80 );
}


void <a name="f501"></a>MenuExample::open()
{
    emit explain( "File/Open selected" );
}


void <a name="f502"></a>MenuExample::news()
{
    emit explain( "File/New selected" );
}

void <a name="f503"></a>MenuExample::save()
{
    emit explain( "File/Save selected" );
}


void <a name="f504"></a>MenuExample::closeDoc()
{
    emit explain( "File/Close selected" );
}


void <a name="f505"></a>MenuExample::undo()
{
    emit explain( "Edit/Undo selected" );
}


void <a name="f506"></a>MenuExample::redo()
{
    emit explain( "Edit/Redo selected" );
}


void <a name="f507"></a>MenuExample::normal()
{
    isBold = FALSE;
    isUnderline = FALSE;
<a name="x1863"></a>    menu-&gt;<a href="qmenudata.html#setItemChecked">setItemChecked</a>( boldID, isBold );
    menu-&gt;<a href="qmenudata.html#setItemChecked">setItemChecked</a>( underlineID, isUnderline );
    emit explain( "Options/Normal selected" );
}


void <a name="f508"></a>MenuExample::bold()
{
    isBold = !isBold;
    menu-&gt;<a href="qmenudata.html#setItemChecked">setItemChecked</a>( boldID, isBold );
    emit explain( "Options/Bold selected" );
}


void <a name="f509"></a>MenuExample::underline()
{
    isUnderline = !isUnderline;
    menu-&gt;<a href="qmenudata.html#setItemChecked">setItemChecked</a>( underlineID, isUnderline );
    emit explain( "Options/Underline selected" );
}


void <a name="f510"></a>MenuExample::about()
{
<a name="x1865"></a>    QMessageBox::<a href="qmessagebox.html#about">about</a>( this, "Qt Menu Example",
                        "This example demonstrates simple use of Qt menus.\n"
                        "You can cut and paste lines from it to your own\n"
                        "programs." );
}


void <a name="f511"></a>MenuExample::aboutQt()
{
<a name="x1866"></a>    QMessageBox::<a href="qmessagebox.html#aboutQt">aboutQt</a>( this, "Qt Menu Example" );
}


void <a name="f512"></a>MenuExample::printer()
{
    emit explain( "File/Printer/Print selected" );
}

void <a name="f513"></a>MenuExample::file()
{
    emit explain( "File/Printer/Print To File selected" );
}

void <a name="f514"></a>MenuExample::fax()
{
    emit explain( "File/Printer/Print To Fax selected" );
}

void <a name="f515"></a>MenuExample::printerSetup()
{
    emit explain( "File/Printer/Printer Setup selected" );
}


<a name="x1873"></a>void MenuExample::<a href="qwidget.html#resizeEvent">resizeEvent</a>( <a href="qresizeevent.html">QResizeEvent</a> * )
{
    label-&gt;<a href="qwidget.html#setGeometry">setGeometry</a>( 20, rect().center().y()-20, width()-40, 40 );
}


int main( int argc, char ** argv )
{
    <a href="qapplication.html">QApplication</a> a( argc, argv );
    MenuExample m;
    m.<a href="qwidget.html#setCaption">setCaption</a>("Qt Examples - Menus");
    a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &amp;m );
    m.<a href="qwidget.html#show">show</a>();
    return a.<a href="qapplication.html#exec">exec</a>();
}
</pre>

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

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