基于Qt5的闹钟实现代码

本程序基于QWidget实现，可以动态显示钟表，并且可以添加铃声

头文件widget.h代码如下：

#ifndef WIDGET_H

#define WIDGET_H

#include

#include

#include

#include

#include

#include

#include

#include

#include

#include

#include

#include

#include

#include

#include

#include

namespace Ui {

class Widget;

}

class Widget : public QWidget

{

Q_OBJECT

public:

explicit Widget(QWidget *parent = 0);

~Widget();

signals:

void isCurrentTime();

private:

Ui::Widget *ui;

void init();

void layout();

void con();

QLCDNumber *lcdNumber;

QLabel *label;

QTimeEdit *timeEdit;

QPushButton *button;

QTimer *timer;

QTimer *uptimer;

QTimer *dtimer;

QTimer *itimer;

QRect rect;

int x;

int y;

double du;

QSystemTrayIcon *trayIcon;

QAction *restoreAct;

QAction *quitAct;

QMenu *trayIconMenu;

private slots:

void clockChange();

void dialogUp();

void mini();

void down();

void comToCur();

protected:

void closeEvent(QCloseEvent *e); };

#endif // WIDGET_H

源文件widget.cpp代码如下：

#include "widget.h"

#include "ui_widget.h"

#include

#include

#include

Widget::Widget(QWidget *parent) :

QWidget(parent),

ui(new Ui::Widget)

{

ui->setupUi(this);

init();

layout();

con();

void Widget::init()

{

setWindowTitle("我的闹钟");

setFixedSize(300,80);

timer=new QTimer;

uptimer=new QTimer;

dtimer=new QTimer;

itimer=new QTimer;

lcdNumber=new QLCDNumber;

lcdNumber->setFixedSize(150,50);

lcdNumber->setDigitCount(12);

lcdNumber->setSegmentStyle(QLCDNumber::Flat);

lcdNumber->display(QTime::currentTime().toString("hh:mm:ss:zzz"));

label=new QLabel("闹钟");

timeEdit=new QTimeEdit;

timeEdit->setDisplayFormat("hh:mm:ss");

button=new QPushButton("确定");

trayIcon=new QSystemTrayIcon;

trayIcon->setIcon(QIcon(":/new/prefix1/clock.ico"));

trayIcon->show();

setWindowIcon(QIcon(":/new/prefix1/clock.ico"));

restoreAct=new QAction("显示",this);

quitAct=new QAction("退出",this);

trayIconMenu=new QMenu;

trayIconMenu->addAction(restoreAct);

trayIconMenu->addAction(quitAct);

trayIcon->setContextMenu(trayIconMenu);

setWindowFlags(Qt::WindowStaysOnTopHint);

}

void Widget::layout()

{

QHBoxLayout *rightTopLay=new QHBoxLayout;

rightTopLay->addWidget(label);

rightTopLay->addWidget(timeEdit);

QHBoxLayout *rightButtonLay=new QHBoxLayout;

rightButtonLay->addStretch();

rightButtonLay->addWidget(button);

QVBoxLayout *rightLay=new QVBoxLayout;

rightLay->addLayout(rightTopLay);

rightLay->addLayout(rightButtonLay);

rightLay->addStretch();

QHBoxLayout *m=new QHBoxLayout;

m->addWidget(lcdNumber);

m->addLayout(rightLay);

setLayout(m);

QDesktopWidget *p=new QDesktopWidget;

p=QApplication::desktop();//

rect=p->rect();

x=rect.right()-width()-2;//

y=rect.bottom()+30;//

setGeometry(x,y,width(),height());

}

void Widget::con()

{

connect(timer,SIGNAL(timeout()),this,SLOT(clockChange()));

timer->start(1);

connect(uptimer,SIGNAL(timeout()),this,SLOT(dialogUp()));

uptimer->start(20);

connect(dtimer,SIGNAL(timeout()),this,SLOT(down()));

dtimer->start(20);

connect(button,SIGNAL(clicked(bool)),dtimer,SIGNAL(timeout())); connect(button,SIGNAL(clicked(bool)),this,SLOT(mini()));

connect(itimer,SIGNAL(timeout()),this,SLOT(comToCur()));

itimer->start(20);

connect(restoreAct,SIGNAL(triggered(bool)),uptimer,SIGNAL(timeout())) ;

connect(this,SIGNAL(isCurrentTime()),uptimer,SIGNAL(timeout())); connect(itimer,SIGNAL(timeout()),this,SLOT(comToCur()));

itimer->start(20);

connect(quitAct,SIGNAL(triggered(bool)),this,SLOT(close()));

void Widget::clockChange()

{

lcdNumber->display(QTime::currentTime().toString("hh:mm:ss:zzz")); }

void Widget::dialogUp()

{

show();

uptimer->start(20);

if(y>=rect.bottom()-height()-50)

{

y-=2;

}

else {

uptimer->stop();

}

setGeometry(x,y,width(),height());

}

void Widget::down()

{

dtimer->start(20);

if(y

{

y+=height()+20;

}

else

{

dtimer->stop();

}

setGeometry(x,y,width(),height());

}

void Widget::mini()

{

hide();

}

void Widget::closeEvent(QCloseEvent *e)

{

QMessageBox::information(0,"退出","您确定要退出吗？");

void Widget::comToCur()

{

if(QVariant(QTime::currentTime().toString())==QVariant(timeEdit->time ()).toString())

{

QApplication::beep();

emit isCurrentTime();

}

}

Widget::~Widget()

{

delete ui;

}

程序运行截图：

添加铃声：