The example program on this page may be used, distributed and modified
without limitation.
Make Picture
This example draws a car in a picture and writes it to a file. The
examples/showpic.cpp example can read and display this file.
//
// Qt Example Program: makepic
//
// This program demonstrates how to create a picture and save it to a file.
// We didn't win any design prize for this car drawing!
//
#include <qpicture.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <qapp.h>
void paintCar( QPainter *p ) // paint a car
{
QPointArray a;
QBrush brush( yellow, SolidPattern );
p->setBrush( brush ); // use solid, yellow brush
a.setPoints( 5, 50,50, 350,50, 450,120, 450,250, 50,250 );
p->drawPolygon( a ); // draw car body
QFont f( "courier", 14, QFont::Bold );
p->setFont( f );
QColor windowColor( 120, 120, 255 ); // a light blue color
brush.setColor( windowColor ); // set this brush color
p->setBrush( brush ); // set brush
p->drawRect( 80, 80, 250, 70 ); // car window
p->drawText( 180, 80, 150, 70, AlignCenter, "-- Qt --\nTroll Tech AS" );
QPixmap pixmap;
if ( pixmap.load("flag.bmp") ) // load and draw image
p->drawPixmap( 100, 90, pixmap );
p->setBackgroundMode( OpaqueMode ); // set opaque mode
p->setBrush( DiagCrossPattern ); // black diagonal cross pattern
p->drawEllipse( 90, 210, 80, 80 ); // back wheel
p->setBrush( CrossPattern ); // black cross fill pattern
p->drawEllipse( 310, 210, 80, 80 ); // front wheel
}
int main( int argc, char **argv )
{
QApplication a( argc, argv ); // QApplication required!
QPicture pict; // our picture
QPainter paint; // our painter
paint.begin( &pict ); // begin painting onto picture
paintCar( &paint ); // paint!
paint.end(); // painting done
char *fileName = "car.pic"; // default picture file name
if ( argc == 2 ) // use argument as file name
fileName = argv[1];
pict.save( fileName ); // save picture
return 0;
}
Generated at 23:50, 1998/03/16 for Qt version 1.33 by the webmaster at Troll Tech