我用了qt的一个程序结果出错了
请指教!
aclock.h:
#ifndef ACLOCK_H
#define ACLOCK_H
#include <qwidget.h>
#include <qdatetime.h>
class AnalogClock : public QWidget // analog clock widget
{
Q_OBJECT
public:
AnalogClock( QWidget *parent=0, const char *name=0 );
void setAutoMask(bool b);
protected:
void updateMask();
void paintEvent( QPaintEvent *);
private slots:
void drawClock( QPainter * );
void timeout();
private:
QTime time;
};
#endif // ACLOCK_H
aclock.cpp:
#include "aclock.h"
#include <qtimer.h>
#include <qpainter.h>
#include <qbitmap.h>
AnalogClock::AnalogClock( QWidget *parent, const char *name )
: QWidget( parent, name )
{
time = QTime::currentTime(); // get current time
QTimer *internalTimer = new QTimer( this ); // create internal timer
connect( internalTimer, SIGNAL(timeout()), SLOT(timeout()) );
internalTimer->start( 5000 ); // emit signal every 5 seconds
}
void AnalogClock::timeout()
{
QTime new_time = QTime::currentTime(); // get the current time
if ( new_time.minute() != time.minute() ) { // minute has changed
if (autoMask())
updateMask();
else
update();
}
}
void AnalogClock::paintEvent( QPaintEvent * )
{
if ( autoMask() )
return;
QPainter paint( this );
paint.setBrush( colorGroup().foreground() );
drawClock( &paint );
}
void AnalogClock::updateMask() // paint clock mask
{
QBitmap bm( size() );
bm.fill( color0 ); //transparent
QPainter paint;
paint.begin( &bm, this );
paint.setBrush( color1 );
paint.setPen( color1 );
drawClock( &paint );
paint.end();
setMask( bm );
}
void AnalogClock::drawClock( QPainter *paint )
{
paint->save();
paint->setWindow( -500,-500, 1000,1000 );
QRect v = paint->viewport();
int d = QMIN( v.width(), v.height() );
paint->setViewport( v.left() + (v.width()-d)/2,
v.top() + (v.height()-d)/2, d, d );
time = QTime::currentTime();
QPointArray pts;
paint->save();
paint->rotate( 30*(time.hour()%12-3) + time.minute()/2 );
pts.setPoints( 4, -20,0, 0,-20, 300,0, 0,20 );
paint->drawPolygon( pts );
paint->restore();
paint->save();
paint->rotate( (time.minute()-15)*6 );
pts.setPoints( 4, -10,0, 0,-10, 400,0, 0,10 );
paint->drawPolygon( pts );
paint->restore();
for ( int i=0; i<12; i++ ) {
paint->drawLine( 440,0, 460,0 );
paint->rotate( 30 );
}
paint->restore();
}
void AnalogClock::setAutoMask(bool b)
{
if (b)
setBackgroundMode( PaletteForeground );
else
setBackgroundMode( PaletteBackground );
QWidget::setAutoMask(b);
}
main.cpp
#include "aclock.h"
#include <qapplication.h>
int main( int argc, char **argv )
{
QApplication a( argc, argv );
AnalogClock *clock = new AnalogClock;
if ( argc == 2 && strcmp( argv[1], "-transparent" ) == 0 )
clock->setAutoMask( TRUE );
clock->resize( 100, 100 );
a.setMainWidget( clock );
clock->setCaption("Qt Example - Analog Clock");
clock->show();
int result = a.exec();
delete clock;
return result;
}
结果错误信息是:
aclock.cpp: In member function `void AnalogClock::drawClock(QPainter*)':
aclock.cpp:71: no matching function for call to `QPainter::setWindow(int, int,
int, int)'
aclock.cpp:73: no matching function for call to `QPainter::viewport()'
aclock.cpp:76: no matching function for call to `QPainter::setViewport(int,
int, int&, int&)'
aclock.cpp:82: no matching function for call to `QPainter::rotate(int)'
aclock.cpp:88: no matching function for call to `QPainter::rotate(int)'
aclock.cpp:95: no matching function for call to `QPainter::rotate(int)'
make: *** [aclock.o] Error 1
可是我已经包涵了qpainter.h 文件,里面也有上面的函数
请指教!
