基于Qt5的闹钟实现代码

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闹钟源代码

98. P0 = table[s % 10];//秒个位数显示
99. P2 = 7;
100. Delay(2);
101.}
102./********************************************************************
143. s = 0;
144. break;
145. default:
146. hour = h;
40.void Time0_Init()
41.{
42. TMOD = 0x01;
43. IE = 0x82;
44. TH0 = 0x4c;
45. TL0 = 0x0 Delay(60);
160.}
161./********************************************************************
162.* 名称 : SetClock()
163.* 功能 : 设置闹钟时间
164.* 输入 : 无
17.sbit KEY1 = P3^2;
18.sbit KEY2 = P3^3;
19.sbit KEY3 = P3^4;
20.sbit BELL = P1^2;
21.
22./********************************************************************
165.* 输出 : 无
166.***********************************************************************/

PyQt5QThread倒计时功能的实现代码

PyQt5QThread倒计时功能的实现代码1.创建多线程类全局变量 secclass work_thread(QThread):timer = pyqtSignal() # 每隔⼀秒发送信号end = pyqtSignal() # 计数完成发送信号def run(self) -> None:while True:self.sleep(1)if sec == 0:self.end.emit() # 发送end信号breakself.timer.emit()2.实例化线程类，绑定计数，技术结束事件bel.setText("20")global secsec = 20self.work_thread = work_thread()self.work_thread.timer.connect(self.count_time)self.work_thread.end.connect(self.end)3.绑定开始按钮事件self.pushButton.clicked.connect(self.start)4.事件⽅法def count_time(self):global secsec = int(bel.text())sec -= 1bel.setText(str(sec))def end(self):self.statusbar.showMessage("计数停⽌")def start(self):self.work_thread.start() # 启动线程PS：知识点扩展PyQt5 倒计时按钮功能实现"""这个例⼦中我们实现了两个功能：菜单按钮、带倒计时的按钮（账户注册的时候经常会碰到）。

"""from PyQt5.QtWidgets import QWidget, QApplication, QPushButton, QMenufrom PyQt5.QtCore import QTimerimport sysclass Example(QWidget):def __init__(self):super().__init__()self.initUI()def initUI(self):self.resize(400,300)self.setWindowTitle('早点毕业吧--按钮（QPushButton）')bt1 = QPushButton("这是什么",self)bt1.move(50,50)self.bt2 = QPushButton('发送验证码',self)self.bt2.move(200,50)"""设置菜单按钮其实很简单，⾸先我们新建⼀个QMenu对象。

QT时钟程序

///*****************.pro文件SOURCES += \analogclock.cppHEADERS += \clock.hQT +=qt3support//************************************ ***analogclock.cpp***************#includ e <qdatetime.h>#include <qpainter.h>#include <qapplication.h>#include <qlabel.h>#include <qwidget.h>#include<qpushbutton.h>#include<qcombobox.h>#include<qmovie.h>#include <qcolor.h>#include "clock.h"static QPoint sed[4]={QPoint(0,-70),QPoint(2,0),QPoint(0,1 0),QPoint(-2,0)};static QPoint min[4]={QPoint(0,-60),QPoint(4,0),QPoint(0,1 2),QPoint(-4,0)};static QPoint hour[4]={QPoint(0,-50),QPoint(6,0),QPoint(0, 13),QPoint(-6,0)};MyTime *mytime=new MyTime();QColor hcolor=QColor(255,0,0);QColor mcolor=QColor(0,255,0);QColor scolor=QColor(0,0,0);QColor hcellcolor=QColor(255,0,0);QColor mcellcolor=QColor(0,0,255);//构造函数MyTime::MyTime(){hour=0; minute=0;second=0;}//getcolorQColor getColor();AnalogClock::AnalogClock( QWidget *parent, const char *name ): QWidget(parent,name ){ QTime curtime0 = QTime::currentTime();//初始启动似的当前时间QDate curdate0 = QDate::currentDate();//初始日期startTimer(1000);//每秒刷新一次setMinimumSize(500,500); setMaximumSize(500,500);setCaption("Good Clock");setGeometry(0,0,0,0);//area显示area = new QLabel("choose area:",this);area->setGeometry(0,0,85,30);//设置地区选择下拉框setArea=new QComboBox(FALSE,this); Q_CHECK_PTR(setArea);setArea->setGeometry(0,30,85,30);setArea->insertItem(" Beijing ",0);setArea->insertItem(" Pairs",1);//-7 setArea->insertItem(" Athens",2);//-6 setArea->insertItem(" Moscow",3);//-5 setArea->insertItem(" Tokyo",4);//+1setArea->insertItem(" Sydny",5);//+1.5 setArea->insertItem(" Hawaii",6);//+6 setArea->insertItem(" Los Angeles",7);//+8//时间默认值mytime->setHour(curtime0.hour());mytime->setMinute(curtime0.minute()); mytime->setSecond(curtime0.second());//change color显示color = new QLabel("change color:",this); color->setGeometry(385,0,90,30);//变颜色按钮h=new QPushButton("H",this);h->setGeometry(385,30,30,30);m=new QPushButton("M",this);m->setGeometry(415,30,30,30);s=new QPushButton("S",this);s->setGeometry(445,30,30,30);//copyright显示right = new QLabel("copyright@20110624 Youngshare",this);right->setGeometry(130,485,500,15);//信号连接connect( setArea, SIGNAL( activated ( int )),this,SLOT( changeArea(int)));connect( h, SIGNAL( clicked()),this,SLOT( changeHourColor ()));connect( m, SIGNAL( clicked()),this,SLOT( changeMinuteCo lor()));connect( s, SIGNAL( clicked()),this,SLOT( changeSecondCo lor()));}//时间分析处理void AnalogClock::changeArea(int areaChoice) { QTime curtime = QTime::currentTime();//没一次刷新要重新获得一下当前时间switch(areaChoice){case 0:mytime->setHour(curtime.hour());mytime->setSecond(curtime.second());mytime->setMinute(curtime.minute());break;case 1:mytime->setHour(curtime.hour()-7);mytime->setMinute(curtime.minute());mytime->setSecond(curtime.second());break;case 2:mytime->setHour(curtime.hour()-6);mytime->setMinute(curtime.minute());mytime->setSecond(curtime.second());break;case 3:mytime->setHour(curtime.hour()-5);mytime->setMinute(curtime.minute());mytime->setSecond(curtime.second());break;case 4:mytime->setHour(curtime.hour()+1); mytime->setMinute(curtime.minute());mytime->setSecond(curtime.second());break;case 5:mytime->setHour(curtime.hour()+1); mytime->setMinute(curtime.minute()+30);mytime->setSecond(curtime.second());break;case 6:mytime->setHour(curtime.hour()+6); mytime->setMinute(curtime.minute());mytime->setSecond(curtime.second());break;case 7:mytime->setHour(curtime.hour()+8); mytime->setMinute(curtime.minute());mytime->setSecond(curtime.second());break;}}//颜色变化处理void AnalogClock::changeHourColor(){hcolor = getColor();}void AnalogClock::changeMinuteColor(){mcolor = getColor();}void AnalogClock::changeSecondColor(){scolor = getColor();}//每秒刷新响应void AnalogClock::timerEvent( QTimerEvent * ){update();}void AnalogClock::paintEvent( QPaintEvent * ) {//QCOORD hourHand[8] = { 2, 0, 0, 2, -2, 0, 0, -25 };//QCOORD minuteHand[8] = { 1, 0, 0, 1, -1, 0, 0, -35 };if(mytime->second>59)mytime->second=mytime->second%60; //进一分钟if(mytime->second==0)mytime->minute++;if(mytime->minute>59){mytime->minute=mytime->minute%60;if(mytime->minute==0)mytime->hour++;}if(mytime->hour>11)mytime->hour=mytime->hour%12; mytime->second++;QPainter painter( this );//painter的起事位置为水平向左rotate旋转是逆时针方向painter.setWindow( -50, -50, 100, 100 );// painter.setBrush( green );painter.save();painter.rotate( 30*(mytime->hour%12) + mytime->minute*0.5);painter.setBrush( hcolor );painter.drawConvexPolygon(sed,4);//painter.drawConvexPolygon( hourHand,4);//画时针QPointArray(painter.restore();painter.save();painter.rotate(mytime->minute*6+0.1*(myti me->second-15));painter.setBrush(mcolor);//painter.drawConvexPolygon( minuteHand,4) ;//画minuteQPointArray(painter.drawConvexPolygon(min,4);painter.restore();painter.save();//画secondpainter.rotate(6 * (mytime->second-15));painter.setPen(scolor);painter.drawLine(0,0,40,0);painter.restore();painter.setPen( hcellcolor );for ( int i = 0; i < 12; i++ ){painter.rotate( 30);painter.drawLine( 42, 0, 46, 0 );}painter.setPen(mcellcolor);for (int j = 0; j < 60; j++){if ((j % 5) != 0)painter.drawLine(42, 0, 44, 0);painter.rotate(6.0);}painter.rotate(72);}//主函数int main( int argc, char **argv ){QApplication app( argc, argv );//setTime();AnalogClock *clock = new AnalogClock; app.setMainWidget( clock );clock->show();return app.exec();}//随即改变颜色QColor getColor(){static int i=0;//颜色选择QColor tempt;i++;if(i>5) i=i%5;switch(i){case 1:tempt=QColor(255,0,0);//红break;case 2:tempt=QColor(0,255,0);//绿break;case 3:tempt=QColor(0,0,255);//蓝break;case 4:tempt=QColor(0,0,0);//黑break;case 5:tempt=QColor(255,255,0);//黄break;}return tempt;}//**********************clock.h********************************#ifndef CLOCK_H#define CLOCK_H#endif // CLOCK_H#include <qdatetime.h>#include <qpainter.h>#include <qapplication.h>#include <qlabel.h>#include <qwidget.h>#include<qpushbutton.h>#include<qcombobox.h>//钟表窗口类class AnalogClock : public QWidget{Q_OBJECTpublic:AnalogClock( QWidget *parent = 0, const char *name = 0 );public slots://设置地区void changeArea(int a);//设置颜色void changeHourColor();void changeMinuteColor();void changeSecondColor();protected:virtual void timerEvent( QTimerEvent *event );virtual void paintEvent( QPaintEvent *ev。

实时电子闹钟52单片机源代码

实时电子闹钟功能：可以在液晶上显示时间星期日期，并按秒实时更新，具有闹钟设定及到时闹钟报警提示功能，闹钟响铃时按任意键可以取消响铃，拓展了四个按键，用于功能选择，数值增大或减小及闹钟查看，每次按键均会有短“滴”声，断电时间不停，再次上电仍将准确显示在液晶上照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟照片描述：用开发板及自己焊接的部分电路板做的实时电子闹钟实时电子闹钟程序#include <reg52.h>#define uchar unsigned char#define uint unsigned int//按键sbit s1=P3^4; //设置sbit s2=P3^5; //减sbit s3=P3^6; //增sbit s4=P3^7; //闹钟sbit beep=P2^4; //蜂鸣器//1602位声明（实验板）sbit rs1602=P2^5;sbit rw1602=P2^6;sbit en1602=P2^7;/*uchar code table0[9]={"2010-4-13"};uchar code table1[8]={"11:03:05"};*///定义全局变量uchar shi,fen,miao,nian,yue,ri,week,s1num,num,flag,flag_di,flag1,amiao,afen,ashi;//延时x*1msvoid delay(uint x){uint a,b;for(a=0;a<x;a++)for(b=0;b<63;b++);}//转换函数uchar Convert(uchar In_Date){uchar i,Out_Date=0,temp=0;for(i=0;i<8;i++){temp=(In_Date>>i)&0x01;Out_Date|=(temp<<(7-i));}return Out_Date;}//1602写操作//写指令void write1602com(uchar com){rs1602=0;rw1602=0;en1602=0;P0=0xff;P0=Convert(com);delay(2);en1602=1;delay(2);en1602=0;delay(2);rs1602=1;}//写数据void write1602data(uchar adata) {rs1602=1;rw1602=0;en1602=0;P0=0xff;P0=Convert(adata);delay(2);en1602=1;delay(2);en1602=0;delay(2);rs1602=0;}//1602初始化设置void init_1602(){rs1602=0;rw1602=0;en1602=0;write1602com(0x38);write1602com(0x0c);write1602com(0x06);write1602com(0x01);write1602com(0x80);//外部中断EA=1;EX0=1;IT0=1;//闹钟标志位flag1=0;flag=0;flag_di=1;s1num=0;}//在1602中显示时分秒void lcd_sfm(uchar add,uchar adata){uchar shiwei,gewei;shiwei=adata/10;gewei=adata%10;write1602com(0x80+0x40+add); //在高位停留// delay(10);write1602data(shiwei+0x30);write1602data(gewei+0x30);}//在1602中显示年月日void lcd_nyr(uchar add,uchar adata){uchar shiwei,gewei;shiwei=adata/10;gewei=adata%10;write1602com(0x80+add); //在高位停留// delay(10);write1602data(shiwei+0x30);write1602data(gewei+0x30);}//1602时钟横杠等字符的显示void lcd1602showsign(){lcd_nyr(0,20);write1602com(0x80+4);write1602data('-');write1602com(0x80+7);write1602data('-');write1602com(0x80+0x40+2);write1602data(':');write1602com(0x80+0x40+5);write1602data(':');}//DS12887部分程序//位申明sbit ds12887_ds=P2^3;sbit ds12887_rw=P2^2;sbit ds12887_as=P2^1;sbit ds12887_cs=P2^0;sbit ds12887_irq=P3^2;//ds12887写数据及指令操作void ds12887_write(uchar add,uchar adata) {ds12887_as=0;ds12887_ds=1;ds12887_rw=1;ds12887_cs=0;ds12887_as=1;P1=add;ds12887_as=0;ds12887_rw=0;P1=adata;ds12887_rw=1;ds12887_as=1;}//ds12887读数据操作uchar ds12887_read(uchar add){uchar k;ds12887_ds=1;ds12887_rw=1;ds12887_as=1;ds12887_cs=0;P1=add;ds12887_as=0;ds12887_ds=0;P1=0xff;k=P1;ds12887_ds=1;ds12887_cs=1;ds12887_as=1;return k;}//设置ds12887初始时间void set_time(){ds12887_write(0x00,50); //secondds12887_write(0x02,59); //minuteds12887_write(0x04,23); //hourds12887_write(0x06,3); //dayds12887_write(0x07,16); //dateds12887_write(0x08,4); //monthds12887_write(0x09,10); //year}//闹钟滴滴响声void didi(){beep=0;delay(100);beep=1;delay(100);beep=0;delay(100);beep=1;}//ds12887初始化void init_ds12887(){ds12887_write(0x0a,0x20);ds12887_write(0x0B,0x26);//SET置1还是置0？？set_time();}//闹钟设定void set_alarm(uchar hour,uchar minute,uchar second) {ds12887_write(1,second);ds12887_write(3,minute);ds12887_write(5,hour);}//读取闹钟数据void read_alarm(){amiao=ds12887_read(1);afen=ds12887_read(3);ashi=ds12887_read(5);}//显示星期void show_week(){switch(week){case 1:write1602com(0x80+11);write1602data('M');write1602data('O');write1602data('N');break;case 2:write1602com(0x80+11);write1602data('T');write1602data('U');write1602data('S');break;case 3:write1602com(0x80+11);write1602data('W');write1602data('E');write1602data('N');break;case 4:write1602com(0x80+11);write1602data('T');write1602data('H');write1602data('U');break;case 5:write1602com(0x80+11);write1602data('F');write1602data('R');write1602data('I');break;case 6:write1602com(0x80+11);write1602data('S');write1602data('A');write1602data('T');break;case 7:write1602com(0x80+11);write1602data('S');write1602data('U');write1602data('N');break;}}//清除设置星期时的数字型显示void clearnumofweek(){write1602com(0x80+14);write1602data(' ');write1602data(' ');}//按键扫描void keyscan(){if(flag_di==0){if((s1==0)||(s2==0)||(s3==0)||(s4==0)) {delay(5);if((s1==0)||(s2==0)||(s3==0)||(s4==0)) {while(!(s1&&s2&&s3&&s4));didi();flag_di=1;}}// flag_di=1;}if(s1==0){delay(10);if(s1==0){s1num++;if(flag1==1){if(s1num==4){s1num=1;// write1602com(0x80+0x40+7);// write1602com(0x0f);}}// s1num++;flag=1;while(!s1);beep=0;delay(50);beep=1;switch(s1num){case 1:write1602com(0x80+0x40+7);write1602com(0x0f);break;case 2:write1602com(0x80+0x40+4);write1602com(0x0f);break;case 3:write1602com(0x80+0x40+1);write1602com(0x0f);break;case 4:write1602com(0x80+15);write1602com(0x0f);break;case 5:write1602com(0x80+9);write1602com(0x0f);break;case 6:write1602com(0x80+6);write1602com(0x0f);break;case 7:write1602com(0x80+3);write1602com(0x0f);break;case 8:ds12887_write(0x00,miao); //secondds12887_write(0x02,fen); //minuteds12887_write(0x04,shi); //hourds12887_write(0x06,week); //dayds12887_write(0x07,ri); //dateds12887_write(0x08,yue); //monthds12887_write(0x09,nian); //year// delay(100);flag=0;s1num=0;break;}}if(s1num!=0){if(s2==0){delay(5);if(s2==0){while(!s2);beep=0;delay(50);beep=1;switch(s1num){case 1:miao++;if(miao==60)miao=0;lcd_sfm(6,miao);write1602com(0 x80+0x40+7);break;case 2:fen++;if(fen==60)fen=0;lcd_sfm(3,fen);write1602com(0 x80+0x40+4);break;case 3:shi++;if(shi==24)shi=0;lcd_sfm(0,shi);write1602com(0 x80+0x40+1);break;case 4:week++;if(week==8)week=1;lcd_nyr(14,week);write1602com(0 x80+15);break;case 5:ri++;if(ri==32)ri=1;lcd_nyr(8,ri);write1602com(0break;case 6:yue++;if(yue==13)yue=1;lcd_nyr(5,yue);write1602com(0 x80+6);break;case 7:nian++;if(nian==100)nian=0;lcd_nyr(2,nian);write1602com(0 x80+3);break;}}}if(s3==0){delay(5);if(s3==0){while(!s3);beep=0;delay(50);beep=1;switch(s1num){case 1:miao--;if(miao==-1)miao=59;lcd_sfm(6,miao);write1602com(0 x80+0x40+7);break;case 2:fen--;if(fen==-1)fen=59;lcd_sfm(3,fen);write1602com(0 x80+0x40+4);break;case 3:shi--;if(shi==-1)shi=23;lcd_sfm(0,shi);write1602com(0 x80+0x40+1);break;case 4:week--;if(week==0)week=7;lcd_nyr(14,week);write1602com(0 x80+15);break;case 5:ri--;if(ri==0)ri=31;lcd_nyr(8,ri);write1602com(0 x80+9);break;case 6:yue--;if(yue==0)yue=12;lcd_nyr(5,yue);write1602com(0 x80+6);break;case 7:nian--;if(nian==-1)nian=99;lcd_nyr(2,nian);write1602com(0 x80+3);break;}}}if(s4==0){delay(5);if(s4==0){// while(!s4);beep=0;delay(50);beep=1;num++;while(!s4);beep=0;delay(50);beep=1;// flag1=1;// flag1=~flag1;if(num==1)// if(flag1==1) //设置闹钟{flag1=1;write1602com(0x80+0x40+7);write1602com(0x0f);read_alarm();miao=amiao;fen=afen;shi=ashi;write1602com(0x80+0x40+9);write1602data('D');write1602data('i');// write1602com(0x80+0x40+7);// write1602com(0x0f);lcd_sfm(0,ashi);lcd_sfm(3,afen);lcd_sfm(6,amiao);}// else //退出闹钟设置，并把设置的时间输入进DS12C887中if(num==2){// delay(50);num=0;s1num=0;write1602com(0x80+0x40+9);write1602data(' ');write1602data(' ');// write1602com(0x0c);// ds12887_write(1,miao);// ds12887_write(3,fen);// ds12887_write(5,shi);set_alarm(shi,fen,miao);flag1=0;flag=0;}}}}}void main(){/*uchar i;init_1602();for(i=0;i<9;i++){write1602data(table0[i]);delay(5);}delay(10);write1602com(0x80+0x40);for(i=0;i<8;i++){write1602data(table1[i]);delay(5);}while(1);*/init_1602();lcd1602showsign();init_ds12887();while(1){keyscan();if(flag_di==0){// delay(100);didi();// delay(200);// flag_di=1;}// delay(10);if((flag==0)&&(flag1==0)){keyscan();// delay(10);shi=ds12887_read(0x04);fen=ds12887_read(0x02);miao=ds12887_read(0x00);nian=ds12887_read(0x09);yue =ds12887_read(0x08);ri =ds12887_read(0x07);week=ds12887_read(0x06);lcd_sfm(0,shi);lcd_sfm(3,fen);lcd_sfm(6,miao);lcd_nyr(2,nian);lcd_nyr(5,yue);lcd_nyr(8,ri);// lcd_nyr(14,week);show_week();clearnumofweek();}}}void exter0() interrupt 0{uchar c;flag_di=0;c=ds12887_read(0x0c);}。

PyQt5使用QTimer实现电子时钟

PyQt5使⽤QTimer实现电⼦时钟本⽂⽤ PyQt5 的QTimer类的两种⽅式实现电⼦时钟，供⼤家参考，具体内容如下【效果图】【知识点】QTimer类提供了定时器信号/槽和单触发定时器。

它在内部使⽤定时器事件来提供更通⽤的定时器。

QTimer很容易使⽤：创建⼀个QTimer，使⽤start()来开始并且把它的timeout()连接到适当的槽。

当这段时间过去了，它将会发射timeout()信号。

【实现】1、定时器信号/槽⽅式class MyTimer(QWidget):def __init__(self, parent = None):# ......#新建⼀个QTimer对象self.timer = QTimer()self.timer.setInterval(1000)self.timer.start()# 信号连接到槽self.timer.timeout.connect(self.onTimerOut)# 定义槽def onTimerOut(self):self.lcd.display(time.strftime("%X",time.localtime()))完整代码：import sysimport timefrom PyQt5.QtCore import *from PyQt5.QtGui import *from PyQt5.QtWidgets import *class MyTimer(QWidget):def __init__(self, parent = None):super(MyTimer, self).__init__(parent)self.resize(200, 100)self.setWindowTitle("QTimerDemo")self.lcd = QLCDNumber()self.lcd.setDigitCount(10)self.lcd.setMode(QLCDNumber.Dec)self.lcd.setSegmentStyle(QLCDNumber.Flat)self.lcd.display(time.strftime("%X",time.localtime()))layout = QVBoxLayout()layout.addWidget(self.lcd)self.setLayout(layout)#新建⼀个QTimer对象self.timer = QTimer()self.timer.setInterval(1000)self.timer.start()# 信号连接到槽self.timer.timeout.connect(self.onTimerOut)# 定义槽def onTimerOut(self):self.lcd.display(time.strftime("%X",time.localtime()))app = QApplication(sys.argv)t = MyTimer()t.show()sys.exit(app.exec_())2、定时器事件⽅式class MyTimer(QWidget):def __init__(self, parent = None):# ......#新建⼀个QTimer对象self.timer = QBasicTimer() # QTimer()貌似不⾏，不知何故？self.timer.start(1000, self)# 覆写计时器事件处理函数timerEvent()def timerEvent(self, event):self.lcd.display(time.strftime("%X",time.localtime()))完整代码：import sysimport timefrom PyQt5.QtCore import *from PyQt5.QtGui import *from PyQt5.QtWidgets import *class MyTimer(QWidget):def __init__(self, parent = None):super(MyTimer, self).__init__(parent)self.resize(200, 100)self.setWindowTitle("QTimerDemo")self.lcd = QLCDNumber()self.lcd.setDigitCount(10)self.lcd.setMode(QLCDNumber.Dec)self.lcd.setSegmentStyle(QLCDNumber.Flat)self.lcd.display(time.strftime("%X",time.localtime()))layout = QVBoxLayout()layout.addWidget(self.lcd)self.setLayout(layout)#新建⼀个QTimer对象self.timer = QBasicTimer() # QTimer()貌似不⾏，不知何故？self.timer.start(1000, self)# 覆写计时器事件处理函数timerEvent()def timerEvent(self, event):if event.timerId() == self.timer.timerId():self.lcd.display(time.strftime("%X",time.localtime()))else:super(WigglyWidget, self).timerEvent(event)app = QApplication(sys.argv)t = MyTimer()t.show()sys.exit(app.exec_())以上就是本⽂的全部内容，希望对⼤家的学习有所帮助，也希望⼤家多多⽀持。

基于单片机智能音乐闹钟源代码0财富

基于单片机智能音乐闹钟源代码/********************************************* ********************************************** ********************************************** ********************************************** ********************************************** ********************************************** ********************************************** ********************************************** ************/#include<reg52.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned intuchar code font[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0 xbf}; //uchar code tab[]={0xc40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x08,0x03,0x46,0x21,0x06, 0x0e};uint code note_value[][14]={{0,63628,63835,64021,64103,64260,64400,64524,63731,63928,0,64185,64331,64463}, //低音1,2,3,4,5,6,7,#1,#2,0(#3在此程序中无需设），#4，#5，#6 相对应的定时器初值{0,64580,64684,64777,64820,64898,64968,65030,64633,64732,0,64860,64934,64994}, //中音1,2,3,4,5,6,7,#1,#2,0(#3在此程序中无需设），#4，#5，#6 相对应的定时器初值{0,65058,65110,65157,65178,65217,65252,65283,65085,65134,0,65198,65235,65268}//高音1,2,3,4,5,6,7,#1,#2,0(#3在此程序中无需设），#4，#5，#6 相对应的定时器初值};uint code song[][67]={/* 0 嘀~(按键时的嘀嗒声)*/ {0x2701,0x0},/* 1 茉莉花*/ {0x1304,0x1302,0x1502,0x1602,0x2102,0x2102,0x1602,0x1504,0x1502,0x1602,0x1507,0x1001,/*0x1304,0x1302,0x1502,0x1602,0x2102,0x2102,0x1602,0x1504,0x1502,0x1602,0x1507,0x1001,* / 0x1504,0x1504,0x1504,0x1302,0x1502,0x1604,0x1604,0x1507,0x1001, 0x1304,0x1202,0x1302,0x1504,0x1302,0x1202,0x1104,0x1102,0x1202,0x1107,0x1001,0x1302,0x1202,0x1102,0x1302,0x1204,0x1002,0x1302,0x1504,0x1602,0x2102,0x1507,0x1001, 0x1202,0x1302,0x1502,0x1202,0x1302,0x1102,0x0602,0x0507,0x1001,0x0604,0x0602,0x1102,0 x1206,0x1302,0x1102,0x1202,0x1102,0x0602,0x050d,0x0},/* 2 莫斯科郊外的晚上*/{0x0602,0x1102,0x1302,0x1102,0x1204,0x1102,0x0702,0x1304,0x1204,0x0607,0x1001,0x1102,0x1302,0x1502,0x1502,0x1604,0x1502,0x1402,0x1307,0x1001,0x1414,0x1514,0x1702,0x1602,0x1304, 0x1002,0x0704,0x0602,0x1302,0x1202,0x1404, 0x1004,0x1502,0x1402,0x1304,0x1202,0x1102,0x1304,0x1204,0x060c, 0x0},/* 3 祝你生日快乐*/ {0x0502,0x0502,0x0604,0x0504,0x1104,0x0708,0x0502,0x0502,0x0604,0x0504,0x1204,0x 1108,0x0502,0x0502,0x1504,0x1304,0x1104,0x0704,0x0604,0x1402,0x1402,0x1304,0x1104,0x1 204,0x1108,0x0},/* 4 铃儿响叮当*/ {0x1302,0x1302,0x1303,0x1001, 0x1302,0x1303,0x1001, 0x1302,0x1502,0x1102,0x1202,0x1307,0x1001,0x1402,0x1402,0x1402,0x1402,0x1402,0x1302,0x1302,0x1302,0x1302,0x1202,0x1202,0x1302,0 x1204,0x1503,0x1001, 0x1302,0x1302,0x1303,0x1001, 0x1302,0x1303,0x1001, 0x1302,0x1502,0x1102,0x1202,0x1307,0x1001,0x1402,0x1402,0x1402,0x1402,0x1402,0x1302,0x1302,0x1302,0x1502,0x1502,0x1402,0x1202,0 x1108,0x0},/* 5 喀秋莎*/ {0x0606,0x0702,0x1106,0x0602,0x1102,0x1102,0x0702,0x0602,0x0704,0x1002,0x0706,0x1102,0x1206,0x0702,0x1202,0x1202,0x1102,0x0702,0x0607,0x1001,0x1304,0x1604,0x1504,0x1602,0x1502,0x1402,0x1402,0x1302,0x1202,0x1304,0x0604,0x1002,0x1404,0x1202,0x1306,0x1102,0x0702,0x0302,0x1102,0x0702,0x0608,0x0},/* 6 欢乐颂*/ {0x1304,0x1304,0x1404,0x1504,0x1504,0x1404,0x1304,0x1204,0x1104,0x1104,0x1204,0x 1304,0x1306,0x1202,0x1207,0x1001,0x1304,0x1304,0x1404,0x1504,0x1504,0x1404,0x1304,0x1204,0x1104,0x1104,0x1204,0x1304,0 x1206,0x1102,0x1107,0x1001, 0x0},/* 7 四季歌*/ {0x1304,0x1302,0x1202,0x1104,0x1102,0x0702,0x0604,0x0604,0x0607,0x1001,0x1404,0x1402,0x1302,0x1202,0x1102,0x1202,0x1402,0x130f,0x1001,0x1404,0x1402,0x1302,0x1204,0x1202,0x1402,0x1304,0x1302,0x1102,0x0604,0x0604,0x0704,0 x1304,0x1302,0x1102,0x0702,0x1102,0x060f,0x0},/* 8 月亮代表我的心*/ {0x150a,0x1302,0x1202,0x1102,0x130f,0x160a,0x1402,0x1202,0x1102,0x070c,0x1002,0x0502, 0x1106,0x1302,0x1506,0x1102,0x0706,0x1302,0x1504,0x1002,0x1502,0x1606,0x1702,0x2106,0 x1604,0x150a,0x1302,0x1202,0x1106,0x1102,0x1104,0x1302,0x1202,0x1106,0x1102,0x1104,0x 1202,0x1302,0x1206,0x1102,0x0606,0x1201,0x1301,0x120c,0x1002,0x0502,0x1106,0x1302,0x1 506,0x1102,0x0706,0x1302,0x1504,0x1002,0x1502,0x1606,0x1702,0x2106,0x1604,0x150a,0x1302,0x1202,0x1106,0x1102,0x1104,0x1302,0x0},//0x1202,0x1106,0x1102,0x1104,0x1202,0x1302 ,0x1206,0x0602,0x0704,0x1102,011202,0x110c,0x1302,0x1502,0x1306,0x1202,0x1104,0x1504,0 x070c,0x0602,0x0702,0x0606,0x0702,0x0604,0x0504,0x130c,0x1504,0x1306,0x1202,0x1104,0x 1504,0x070c,0x0602,0x0702,0x1106,0x1102,0x1104,0x1202,0x1302,0x120c,0x1002,0x0502,0x1 106,0x1302,0x1506,0x1102,0x0706,0x1302,0x1504,0x1002,0x1502,0x1606,0x1702,0x2106,0x16 04,0x150a,0x1302,0x1202,0x1106,0x1102,0x1104,0x1302,0x1202,0x1106,0x1102,0x1104,0x120 2,0x1302,0x1206,0x0602,0x0704,0x1102,0x1202,0x1104,0x1502,0x1402,0x1304,0x1202,0x1102 ,0x1104,0x0702,0x0602,0x0518,0x050f,0x0},/* 9 献给爱丽丝*/ {0x2302,0x2212,0x2302,0x2212,0x2302,0x1702,0x2202,0x2102,0x1604,0x1002,0x1102,0x1302,0x1602,0x1704, 0x1002,0x1302,0x1512,0x1702,0x2104, 0x1002,0x1302,0x2302,0x2212,0x2302,0x2212,0x2302,0x1702,0x2202,0x2102,0x1604,0x1002,0x1102,0x1302,0x1602,0x1704, 0x1002,0x1202,0x2102,0x1702,0x1604, 0x1002,0x1702,0x2102,0x2202,0x2305,0x1001, 0x1502,0x2402,0x2302,0x2205,0x1001, 0x1402,0x2302,0x2202,0x2105,0x1001, 0x1302,0x2202,0x2102,0x1704, 0x1002,0x1302,0x2302,0x1002, 0x0},// 0x2212,0x2302, 0x1002,0x1002,0x2212,0x2302,0x2212,0x2302,0x2212,0x2302,0x1702,0x2202,0x2102,0x1604, 0x1002,0x1102,0x1302,0x1602,0x1704, 0x1002,0x1302,0x1512,0x1702,0x2104, 0x1002,0x1302,0x2302,0x2212,0x2302,0x2212,0x2302,0x1702,0x2202,0x2102,0x1604,0x1002,0x1102,0x1302,0x1602,0x1704,0x1002,0x1202,0x2102,0x1702,0x1604,0x1004,0x0},/* 10 小星星，亮晶晶*/{0x1104,0x1104,0x1504,0x1504,0x1604,0x1604,0x1507,0x1001,0x1404,0x1404,0x1304,0x1304,0x1204,0x1204,0x1107,0x1001,0x1504,0x1504,0x1404,0x1404,0x1304,0x1304,0x1207,0x1001,0x1504,0x1504,0x1404,0x1404,0x1304,0x1304,0x1207,0x1001,0x1104,0x1104,0x1504,0x1504,0x1604,0x1604,0x1507,0x1001,0x1404,0x1404,0x1304,0x1304,0x1204,0x1204,0x1107,0x1001, 0x0},/* 11 Nokia经典铃声*/ {0x2502,0x2402,0x1604,0x1704,0x2302,0x2202,0x1404,0x1504,0x2202,0x2102,0x1304,0x1504, 0x210c,0x2502,0x2402,0x1604,0x1704,0x2302,0x2202,0x1404,0x1504,0x2202,0x2102,0x1304,0x1504,0 x210c,0x0}/* 12 两只老虎*/ {0x1104,0x1204,0x1304,0x1104,0x1104,0x1204,0x1304,0x1104,0x1304,0x1404,0x1508,0x 1304,0x1404,0x1508,0x1502,0x1602,0x1502,0x1402,0x1304,0x1104,0x1502,0x1602,0x1502,0x1 402,0x1304,0x1104,0x1304,0x0504,0x1108,0x1304,0x0504,0x1108,0x0}};sbit key_select=P1^0; //功能键sbit key_inc=P1^1; // 增大建sbit key_dec=P1^2; // 减小键&强行关闹钟和歌曲键sbit key_alarm_or_song=P1^3; //调闹钟键&点歌键sbit buzzer=P0^0;bit music_break=0;uchar week=1,hour=12,minute=0,second=0, alarm_num,display[]={1,2,0,0,0,0},n=0,bit_code=0xfb,alarm_break=1,flag_display=0,flag_a larm=0; //定义数组display[6]作为显示缓冲区,n为数组下标,flag_display用于设置时间或闹钟时的闪烁显示标志,flag_alarm用于闹钟键按下的标志uchardisplay_music[6]={0x10,0x10,0,0,0x10,0x10},display_alarm[6]={0,0,0,0,0,0},alarm[][3]={{12}, {12,1},{12,3},{12,5},{1},{2},{3},{4},{5},{6}},alarm_num=0,song_num=0;uint initial_value,count_display=0,count=0; //count_display用于设置时间或闹钟时的闪烁显示记时变量void delay_ms(uint t) //延时1ms{uint i,j;for(i=t;i>0;i--)for(j=110;j>0;j--);}void di() //按键发声函数{buzzer=0;delay_ms(100);buzzer=1;}void music(uchar song_number){uchar i,section,basic_note,changed_note,pitch,duration,note_num=0; //分别定义i,音区，基本音级，变化音级，音高，时值,所选歌曲的音符的编号uint note; //定义音符变量ET1=1;music_break=1;note=song[song_number][note_num];while(note!=0&&music_break){section=note/0x1000;basic_note=note/0x100%0x10;changed_note=note/0x10%0x10;duration=note%0x10;if(changed_note==1)pitch=basic_note+7;pitch=basic_note;initial_value=note_value[section][pitch];if(initial_value!=0){TH1=initial_value/256;TL1=initial_value%256;TR1=1;}elseTR1=0;if(key_alarm_or_song==0){delay_ms(10);if(key_alarm_or_song==0)break;}for(i=duration;i>0;i--) //音符延时函数delay_ms(125);note_num++;note=song[song_number][note_num];if(key_dec==0) //强行关闭闹钟{delay_ms(10);if(key_dec==0){while(!key_dec);break;}}}music_break=0;TR1=0;}void alarm_(){for(alarm_num=1;alarm_num<10;alarm_num++) //添加闹钟时需要修改的地方！！！！！！！！！！if(hour==alarm[alarm_num][0]&&minute==alarm[alarm_num][1]&&second==alarm[alarm_ num][2]){display_alarm[0]=alarm[alarm_num][0]/10;display_alarm[1]=alarm[alarm_num][0]%10;display_alarm[2]=alarm[alarm_num][1]/10;display_alarm[3]=alarm[alarm_num][1]%10;display_alarm[4]=0x10;display_alarm[5]=alarm_num;music(alarm_num);}}/*void alarm_ () //闹钟发声函数{if(hour==alarm[0]&&minute==alarm[1]&&second==alarm[2]){uint k;for(k=10;k>0;k--){buzzer=0;delay_ms(100);buzzer=1;}}}*/void scan_key() //按键扫描函数{bit flag_break=0; //flag_break作为跳出按键扫描循环程序的标志位if(key_select==0){delay_ms(10);if(key_select==0) // 确认功能键被按下{while(!key_select); //释放确认di();while(1) //时按键处理{flag_display=1;if(flag_break==1){alarm_num=0;break;}if(key_alarm_or_song==0){delay_ms(10);if(key_alarm_or_song==0){flag_alarm=1;if(flag_break==1){alarm_num=0;break;}alarm_num++;if(alarm_num==10) //添加闹钟时需要修改的地方！！！！！！！！！！alarm_num=1;display_alarm[0]=alarm[alarm_num][0]/10;display_alarm[1]=alarm[alarm_num][0]%10;display_alarm[2]=alarm[alarm_num][1]/10;display_alarm[3]=alarm[alarm_num][1]%10;display_alarm[4]=0x10;display_alarm[5]=alarm_num%10;while(!key_alarm_or_song);di();}}if(key_select==0){delay_ms(10);if(key_select==0) //确认功能键改时被按下{while(!key_select); //释放确认di();while(1) //分按键处理{flag_display=2;if(flag_break==1)break;if(key_select==0){delay_ms(10);if(key_select==0) //确认功能键改分被按下{while(!key_select); //释放确认di();while(1) //秒按键处理{flag_display=3;if(key_select==0){delay_ms(10);if(key_select==0)//确认功能键改秒被按下{while(!key_select);//此处等待按键释放非常重要！！！di();flag_alarm=0;flag_break=1;break;}}if(key_inc==0&&flag_alarm==0){delay_ms(10);if(key_inc==0){if(flag_alarm==0){second++;if(second==60)second=0;display[4]=second/10;display[5]=second%10;while(!key_inc);}else{alarm[alarm_num][2]++;if(alarm[alarm_num][2]==60)alarm[alarm_num][2]=0;display_alarm[4]=0x10;display_alarm[5]=alarm_num;while(!key_inc);}di();}}if(key_dec==0){delay_ms(10);if(key_dec==0){if(flag_alarm==0){second--;if(second==255)second=59;display[4]=second/10;display[5]=second%10;while(!key_dec);}else{alarm[alarm_num][2]--;if(alarm[alarm_num][2]==255)alarm[alarm_num][2]=59;display_alarm[4]=0x10;display_alarm[5]=alarm_num;while(!key_dec);}di();}}}}}if(key_inc==0){delay_ms(10);if(key_inc==0){if(flag_alarm==0){minute++;if(minute==60)minute=0;display[2]=minute/10;display[3]=minute%10;while(!key_inc);}else{alarm[alarm_num][1]++;if(alarm[alarm_num][1]==60)alarm[alarm_num][1]=0; display_alarm[2]=alarm[alarm_num][1]/10;display_alarm[3]=alarm[alarm_num][1]%10;while(!key_inc);}di();}}if(key_dec==0){delay_ms(10);if(key_dec==0){if(flag_alarm==0){minute--;if(minute==255)minute=59;display[2]=minute/10;display[3]=minute%10;while(!key_dec);}else{alarm[alarm_num][1]--;if(alarm[alarm_num][1]==255)alarm[alarm_num][1]=59; display_alarm[2]=alarm[alarm_num][1]/10;display_alarm[3]=alarm[alarm_num][1]%10;while(!key_dec);}di();}}}}}if(key_inc==0){delay_ms(10);if(key_inc==0){if(flag_alarm==0){hour++;if(hour==24)hour=0;display[0]=hour/10;display[1]=hour%10;while(!key_inc);}else{alarm[alarm_num][0]++;if(alarm[alarm_num][0]==24)alarm[alarm_num][0]=0;display_alarm[0]=alarm[alarm_num][0]/10;display_alarm[1]=alarm[alarm_num][0]%10;while(!key_inc);}di();}}if(key_dec==0){delay_ms(10);if(key_dec==0){if(flag_alarm==0){hour--;if(hour==255)hour=23;display[0]=hour/10;display[1]=hour%10;while(!key_dec);}else{alarm[alarm_num][0]--;if(alarm[alarm_num][0]==255)alarm[alarm_num][0]=23;display_alarm[0]=alarm[alarm_num][0]/10;display_alarm[1]=alarm[alarm_num][0]%10;while(!key_dec);}di();}}}}}flag_display=0;if(key_alarm_or_song==0){delay_ms(10);if(key_alarm_or_song==0){while(!key_alarm_or_song);song_num++;if(song_num==12)song_num=1; //添加歌曲时需要修改的地方！！！！！！！！！！display_music[2]=song_num/10;display_music[3]=song_num%10;music(song_num);}}}void main(){TMOD=0x11;EA=1;ET0=1;ET1=1;TH0=0xf6; //定时50ms 初值TL0=0x3c;TR0=1;PT1=1;PT0=0;while(1){ buzzer=1;alarm_num=0;scan_key();alarm_();}}void timer_0() interrupt 1{TH0=0xf6;TL0=0x3c;count++;if(count==400){count=0;second++;display[4]=second/10;display[5]=second%10;if(second==60){second=0;display[4]=second/10;display[5]=second%10;minute++;display[2]=minute/10;display[3]=minute%10;if(minute==60){minute=0;display[2]=minute/10;display[3]=minute%10;hour++;if(hour==24)hour=0;display[0]=hour/10;display[1]=hour%10;}}}if(flag_alarm==0){if(music_break==1&&alarm_num==0)P3=font[display_music[n]];else{if(music_break==1&&alarm_num!=0){if(n==1)P3=font[display_alarm[n]]&0x7f;elseP3=font[display_alarm[n]];}else{if(n==1||n==3)P3=font[display[n]]&0x7f;elseP3=font[display[n]];}}}elseif(n==1)P3=font[display_alarm[n]]&0x7f;elseP3=font[display_alarm[n]];n++;if(n==6)n=0;switch(flag_display) //调时、调闹钟闪烁部分{case 0: {P2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;} break;case 1: {count_display++;if(count_display<=200){P2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;}if(count_display>200&&count_display<=400){if(count_display==400)count_display=0;if(bit_code==0xfb||bit_code==0xf7)P2=0xff;elseP2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;}} break;case 2: {count_display++;if(count_display<=200){P2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;}if(count_display>200&&count_display<=400){if(count_display==400)count_display=0;if(bit_code==0xef||bit_code==0xdf)P2=0xff;elseP2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;}} break;case 3: {if(flag_alarm==0){count_display++;if(count_display<=200){P2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;}if(count_display>200&&count_display<=400){if(count_display==400)count_display=0;if(bit_code==0xbf||bit_code==0x7f)P2=0xff;elseP2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;}}else{P2=bit_code;bit_code=_crol_(bit_code,1);if(bit_code==0xfe)bit_code=0xfb;}} break;default : break;}}void timer_1() interrupt 3{TH1=initial_value/256;TL1=initial_value%256;buzzer=~buzzer;}/****************************************************************************** ******************************************************************************* ******************************************************************************* ******************************************************************************* ******************************************************************************* ******************************************************************************* ******************************************************************************* ***************/。

QT定时器的使用方法

QT定时器的使⽤⽅法在界⾯程序中很容易使⽤到，定时刷新或者更新什么东西，此时应该使⽤定时器的功能，定时器是在指定时间触发定时器函数，来达到定时的效果接下来介绍两种定时器的使⽤，废话不说直接上代码代码结构：dialog.h#ifndef DIALOG_H#define DIALOG_H#include <QDialog>#include <QTimerEvent>#include <QDebug>#include <QTimer>namespace Ui {class Dialog;}class Dialog : public QDialog{Q_OBJECTpublic:explicit Dialog(QWidget *parent = nullptr);~Dialog();enum timerIndex //枚举从 0 开始{timer1,timer2,timer3};private:Ui::Dialog *ui;QTimer *update_time;int id1,id2,id3;void timerEvent(QTimerEvent *event);private slots:void time_update();};#endif// DIALOG_Hdialog.cpp#include "dialog.h"#include "ui_dialog.h"Dialog::Dialog(QWidget *parent) :QDialog(parent),ui(new Ui::Dialog){ui->setupUi(this);id1 = startTimer(1000);id2 = startTimer(2000);id3 = startTimer(3000);update_time = new QTimer();connect(update_time,SIGNAL(timeout()),this,SLOT(time_update()));update_time->start(1000); //1秒钟后启动}void Dialog::timerEvent(QTimerEvent *event){qDebug() << event->timerId() << endl;switch (event->timerId()-1){case timer1 :qDebug() << "timer1" << endl;break;case timer2 :qDebug() << "timer2" << endl;break;case timer3 :qDebug() << "timer3" << endl;break;default:qDebug() << "no !!"<<endl;break;}}void Dialog::time_update(){qDebug() <<"update"<< endl;}Dialog::~Dialog(){delete ui;}main.cpp#include "dialog.h"#include <QApplication>int main(int argc, char *argv[]){QApplication a(argc, argv);Dialog w;w.show();return a.exec();}两种定时器使⽤⽅法已经介绍，可以根据⾃⼰的实际情况进⾏选择使⽤，个⼈感觉推荐使⽤获取定时器id 的那种⽅法，⽐较⽅便⼯程代码在此链接需要⾃⾏下载链接：https:///s/1iM3IgRzfEoOD21ek1L_GVQ提取码：hcqy。

PyQt5中QTimer定时器的实例代码

PyQt5中QTimer定时器的实例代码如果要在应⽤程序中周期性地进⾏某项操作，⽐如周期性地检测主机的CPU值，则需要⽤到QTimer定时器，QTimer类提供了重复的和单次的定时器。

要使⽤定时器，需要先创建⼀个QTimer实例，将其timeout信号连接到相应的槽，并调⽤start()。

然后定时器会以恒定的间隔发出timeout信号，当窗⼝控件收到timeout信号后，它就会停⽌这个定时器。

⼀、QTimer类中的常⽤⽅法⽅法描述start(milliseconds)启动或重新启动定时器，时间间隔为毫秒。

如果定时器已经运⾏，它将被停⽌并重新启动。

如果singleShot信号为真，定时器将仅被激活⼀次Stop()停⽌定时器⼆、QTimer类中的常⽤信号信号描述singleShot在给定的时间间隔后调⽤⼀个槽函数时发射此信号timeout当定时器超时时发射此信号三、QTimer的使⽤⽰例1：import sysfrom PyQt5 import QtCorefrom PyQt5.QtWidgets import *from PyQt5.QtGui import *from PyQt5.QtCore import *class Demo(QWidget):count = 0def __init__(self):super().__init__()self.setGeometry(100, 50, 500, 400)self.setWindowTitle('QTimer')self.list = QListWidget()bel = QLabel('显⽰当前时间')self.start = QPushButton('开始')self.end = QPushButton('结束')layout = QGridLayout()#初始化定时器self.timer = QTimer(self)self.timer.timeout.connect(self.showTime)self.start.clicked.connect(self.startTimer)self.end.clicked.connect(self.endTimer)layout.addWidget(bel,0,0,1,2)layout.addWidget(self.start,1,0)layout.addWidget(self.end,1,1)self.setLayout(layout)def showTime(self):#获取系统现在的时间time = QDateTime.currentDateTime().toString('yyyy-MM-dd hh:mm:ss dddd')bel.setText(time)def startTimer(self):#设置时间间隔并启动定时器self.timer.start(1000)self.start.setEnabled(False)self.end.setEnabled(True)def endTimer(self):#关闭定时器self.timer.stop()self.start.setEnabled(True)self.end.setEnabled(False)if __name__ == "__main__":app = QApplication(sys.argv)form = Demo()form.show()sys.exit(app.exec_())运⾏效果如下：⽰例2：import sysfrom PyQt5 import QtCorefrom PyQt5.QtWidgets import *from PyQt5.QtGui import *from PyQt5.QtCore import *if __name__ == "__main__":app = QApplication(sys.argv)label = QLabel('<font color=blue size=20><b>PyQt5,窗⼝5秒后消失</b></font>')#⽆边框窗⼝label.setWindowFlags(Qt.SplashScreen|Qt.FramelessWindowHint)label.show()#设置5秒后⾃动退出QTimer.singleShot(5000,app.quit)sys.exit(app.exec_())运⾏效果如下：PyQt5 QTimer计数到特定的秒数我正在使⽤python创建程序，并且正在使⽤pyqt。

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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 <QWidget>#include<QTime>#include<QTimer>#include<QLabel>#include<QPushButton>#include<QVBoxLayout>#include<QHBoxLayout>#include<QTimeEdit>#include<QLCDNumber>#include<QVariant>#include<QAction>#include<QMenu>#include<QCloseEvent>#include<QApplication>#include<QMessageBox>#include<QSystemTrayIcon>namespace Ui {class Widget;}class Widget : public QWidget{Q_OBJECTpublic: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<QtDebug>#include<QApplication>#include<QDesktopWidget>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<rect.bottom()){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：。