doc/html/t8-main-cpp.html


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<pre>/****************************************************************
**
** Qt tutorial 8
**
****************************************************************/

#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qpushbutton-h.html">qpushbutton.h</a>&gt;
#include &lt;<a href="qlcdnumber-h.html">qlcdnumber.h</a>&gt;
#include &lt;<a href="qfont-h.html">qfont.h</a>&gt;
#include &lt;<a href="qlayout-h.html">qlayout.h</a>&gt;

#include "lcdrange.h"
#include "cannon.h"


class MyWidget: public <a href="qwidget.html">QWidget</a>
{
public:
    MyWidget( <a href="qwidget.html">QWidget</a> *parent=0, const char *name=0 );
};


<a name="f36"></a>MyWidget::MyWidget( <a href="qwidget.html">QWidget</a> *parent, const char *name )
        : <a href="qwidget.html">QWidget</a>( parent, name )
{
    <a href="qpushbutton.html">QPushButton</a> *quit = new <a href="qpushbutton.html">QPushButton</a>( "Quit", this, "quit" );
    quit-&gt;<a href="qwidget.html#setFont">setFont</a>( QFont( "Times", 18, QFont::Bold ) );

    <a href="qobject.html#connect">connect</a>( quit, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), qApp, SLOT(<a href="qapplication.html#quit">quit</a>()) );

    LCDRange *angle = new LCDRange( this, "angle" );
    angle-&gt;setRange( 5, 70 );

    CannonField *cannonField
        = new CannonField( this, "cannonField" );

    <a href="qobject.html#connect">connect</a>( angle, SIGNAL(valueChanged(int)),
             cannonField, SLOT(setAngle(int)) );
    <a href="qobject.html#connect">connect</a>( cannonField, SIGNAL(angleChanged(int)),
             angle, SLOT(setValue(int)) );

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    //2x2, 10 pixel border

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    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( angle, 1, 0, Qt::AlignTop );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( cannonField, 1, 1 );
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    angle-&gt;setValue( 60 );
    angle-&gt;<a href="qwidget.html#setFocus">setFocus</a>();
}


int main( int argc, char **argv )
{
    <a href="qapplication.html">QApplication</a> a( argc, argv );

    MyWidget w;
    w.<a href="qwidget.html#setGeometry">setGeometry</a>( 100, 100, 500, 355 );
    a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &amp;w );
    w.<a href="qwidget.html#show">show</a>();
    return a.<a href="qapplication.html#exec">exec</a>();
}
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