#include <qapplication.h>
#include <qwidget.h>
#include <qpainter.h>
#include <qbrush.h>
class DrawDemo:public QWidget
{
public:
DrawDemo( QWidget *parent=0, const char *name=0 );
void paintEvent( QPaintEvent *);
private:
void drawPrimitives( QPainter *p);
};
DrawDemo::DrawDemo( QWidget *parent, const char *name):QWidget(parent, name)
{
setBackgroundColor(white);
}
void DrawDemo::drawPrimitives(QPainter *p)
{
QBrush b1( Qt::blue );
QBrush b2( Qt::green, Qt::Dense6Pattern );
QBrush b3( Qt::NoBrush );
QBrush b4( Qt::CrossPattern );
p->setPen( Qt::red );
p->setBrush( b1 );
p->drawRect( 20, 20, 120, 90 );
p->setBrush( b2 );
p->drawRoundRect( 180, 20, 120, 90, 20, 20 );
p->setBrush( b3 );
p->drawEllipse( 20, 140, 120, 60 );
p->setBrush( b4 );
p->drawPie( 180, 140, 120, 120, 45*16, 90*16 );
p->setBrush( b1 );
p->drawLine( 20, 220, 300, 220 );
}
void DrawDemo::paintEvent( QPaintEvent *)
{
QPainter paint(this);
drawPrimitives(&paint);
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
DrawDemo drawdemo;
drawdemo.resize( 320, 240 );
drawdemo.setCaption( "QT DRAW DEMO");
app.setMainWidget(&drawdemo);
drawdemo.show();
return app.exec();
}
