很感谢，刚学QT编程，很多都不懂。我能把代码贴上来你帮我看下吗。参数我不知道怎么设置。#ifndef CLOCK_H
#define CLOCK_H
#include <qvariant.h>
#include <qwidget.h>
#include<qpainter.h>
class QVBoxLayout;
class QHBoxLayout;
class QGridLayout;
class Clock;
class Clock : public QWidget
{
Q_OBJECT
public:
Clock( QWidget* parent = 0, const char* name = 0, WFlags fl = 0 );
void PaintEvent(QPaintEvent*);
~Clock();
};
#endif // CLOCK_H
#include <qlayout.h>
#include <qvariant.h>
#include <qtooltip.h>
#include <qwhatsthis.h>
/*
* Constructs a Clock which is a child of 'parent', with the
* name 'name' and widget flags set to 'f'
*/
Clock::Clock( QWidget* parent, const char* name, WFlags WType_TopLevel )
: QWidget( parent, name, WType_TopLevel )
{
if ( !name )
setName( "Clock" );
resize( 588, 480 );
setMaximumSize( QSize( 640, 480 ) );
setBaseSize( QSize( 640, 480 ) );
setCaption( tr( "Welcome to my university!" ) );
setBackgroundOrigin( QWidget::ParentOrigin );
}
void Clock::PaintEvent(QPaintEvent*)
{
QPainter painter;
painter.setPen(red);
painter.drawLine(0,0,50,50);
}
/*
* Destroys the object and frees any allocated resources
*/
Clock::~Clock()
{
// no need to delete child widgets, Qt does it all for us
}
#include"Clock.h"
#include<qapplication.h>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Clock pt;
pt.resize(400, 150);
pt.show();
return app.exec();
}
