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tqt3/doc/html/t8-cannon-cpp.html

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<pre>/****************************************************************
**
** Implementation CannonField class, TQt tutorial 8
**
****************************************************************/
#include "cannon.h"
#include &lt;<a href="qpainter-h.html">qpainter.h</a>&gt;
<a name="f34"></a>CannonField::CannonField( <a href="qwidget.html">TQWidget</a> *parent, const char *name )
: <a href="qwidget.html">TQWidget</a>( parent, name )
{
ang = 45;
<a href="qwidget.html#setPalette">setPalette</a>( TQPalette( TQColor( 250, 250, 200) ) );
}
void <a name="f35"></a>CannonField::setAngle( int degrees )
{
if ( degrees &lt; 5 )
degrees = 5;
if ( degrees &gt; 70 )
degrees = 70;
if ( ang == degrees )
return;
ang = degrees;
<a href="qwidget.html#repaint">repaint</a>();
emit angleChanged( ang );
}
void CannonField::<a href="qwidget.html#paintEvent">paintEvent</a>( <a href="qpaintevent.html">TQPaintEvent</a> * )
{
<a href="qstring.html">TQString</a> s = "Angle = " + TQString::number( ang );
<a href="qpainter.html">TQPainter</a> p( this );
p.<a href="qpainter.html#drawText">drawText</a>( 200, 200, s );
}
TQSizePolicy CannonField::<a href="qwidget.html#sizePolicy">sizePolicy</a>() const
{
return TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Expanding );
}
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