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<title>t12/main.cpp Example File</title>
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<pre>/****************************************************************
**
** Qt tutorial 12
**
****************************************************************/
#include <<a href="qapplication-h.html">qapplication.h</a>>
#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>
#include <<a href="qlcdnumber-h.html">qlcdnumber.h</a>>
#include <<a href="qfont-h.html">qfont.h</a>>
#include <<a href="qlayout-h.html">qlayout.h</a>>
#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="f86"></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-><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( "ANGLE", this, "angle" );
angle->setRange( 5, 70 );
LCDRange *force = new LCDRange( "FORCE", this, "force" );
force->setRange( 10, 50 );
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)) );
<a href="qobject.html#connect">connect</a>( force, SIGNAL(valueChanged(int)),
cannonField, SLOT(setForce(int)) );
<a href="qobject.html#connect">connect</a>( cannonField, SIGNAL(forceChanged(int)),
force, SLOT(setValue(int)) );
<a href="qpushbutton.html">QPushButton</a> *shoot = new <a href="qpushbutton.html">QPushButton</a>( "&Shoot", this, "shoot" );
shoot-><a href="qwidget.html#setFont">setFont</a>( QFont( "Times", 18, QFont::Bold ) );
<a href="qobject.html#connect">connect</a>( shoot, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), cannonField, SLOT(shoot()) );
<a href="qgridlayout.html">QGridLayout</a> *grid = new <a href="qgridlayout.html">QGridLayout</a>( this, 2, 2, 10 );
grid-><a href="qgridlayout.html#addWidget">addWidget</a>( quit, 0, 0 );
grid-><a href="qgridlayout.html#addWidget">addWidget</a>( cannonField, 1, 1 );
grid-><a href="qgridlayout.html#setColStretch">setColStretch</a>( 1, 10 );
<a href="qvboxlayout.html">QVBoxLayout</a> *leftBox = new <a href="qvboxlayout.html">QVBoxLayout</a>;
grid-><a href="qgridlayout.html#addLayout">addLayout</a>( leftBox, 1, 0 );
leftBox-><a href="qboxlayout.html#addWidget">addWidget</a>( angle );
leftBox-><a href="qboxlayout.html#addWidget">addWidget</a>( force );
<a href="qhboxlayout.html">QHBoxLayout</a> *topBox = new <a href="qhboxlayout.html">QHBoxLayout</a>;
grid-><a href="qgridlayout.html#addLayout">addLayout</a>( topBox, 0, 1 );
topBox-><a href="qboxlayout.html#addWidget">addWidget</a>( shoot );
topBox-><a href="qboxlayout.html#addStretch">addStretch</a>( 1 );
angle->setValue( 60 );
force->setValue( 25 );
angle-><a href="qwidget.html#setFocus">setFocus</a>();
}
int main( int argc, char **argv )
{
QApplication::<a href="qapplication.html#setColorSpec">setColorSpec</a>( QApplication::CustomColor );
<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>( &w );
w.<a href="qwidget.html#show">show</a>();
return a.<a href="qapplication.html#exec">exec</a>();
}
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