Source code for tutorial 8: cannon.cpp
/****************************************************************
**
** Implementation CannonField class, Qt tutorial 8
**
****************************************************************/
#include "cannon.h"
CannonField::CannonField( QWidget *parent, const char *name )
: QWidget( parent, name )
{
ang = 45;
}
void CannonField::setAngle( int degrees )
{
if ( degrees < 5 )
degrees = 5;
if ( degrees > 70 )
degrees = 70;
if ( ang == degrees )
return;
ang = degrees;
repaint();
emit angleChanged( ang );
}
void CannonField::paintEvent( QPaintEvent * )
{
QString s;
s.sprintf( "Angle = %i", ang );
drawText( 200, 100, s );
}
Generated at 17:29, 1997/04/07 for Qt version 1.2 by the webmaster at Troll Tech