个人中心
gpt4 book ai didi

Qt实现简易时钟

转载 作者：qq735679552 更新时间：2022-09-29 22:32:09 25 4
gpt4 key购买 nike

CFSDN坚持开源创造价值，我们致力于搭建一个资源共享平台，让每一个IT人在这里找到属于你的精彩世界.

这篇CFSDN的博客文章Qt实现简易时钟由作者收集整理，如果你对这篇文章有兴趣，记得点赞哟.

本文实例为大家分享了Qt实现简易时钟展示的具体代码，供大家参考，具体内容如下 。

1、效果展示 。

简单实现时钟（圆盘+QLCDNumber），大小刻度，数字等.

Qt实现简易时钟

2、实现 。

.pro 。

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
QT  += core gui
 
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
CONFIG += c++11
 
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
 
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
 
SOURCES += \
  main.cpp \
  mainwindow.cpp
 
HEADERS += \
  mainwindow.h
 
FORMS += \
  mainwindow.ui
 
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else : unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
 
RESOURCES += \
  image.qrc

.h 。

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
#include <QDateTime>
 
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
 
class MainWindow : public QMainWindow
{
  Q_OBJECT
 
public :
  MainWindow(QWidget *parent = nullptr);
  ~MainWindow();
  void paintEvent(QPaintEvent *event);
  bool showColon = false ;
public slots:
  void countTime();
 
private :
  Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H

.cpp 。

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<QPainter>
#include<QTimer>
#include<QTime>
#include<QString>
 
MainWindow::MainWindow(QWidget *parent)
  : QMainWindow(parent)
  , ui( new Ui::MainWindow)
{
  ui->setupUi( this );
 
  QTimer *timer = new QTimer( this );
  connect(timer, SIGNAL(timeout()), this , SLOT(update()));
  connect(timer, SIGNAL(timeout()), this , SLOT(countTime()));
  timer->start(1000);
  countTime();
 
  setWindowTitle(tr( "Clock_by_Xr" ));
  setFixedSize(800, 400);
 
}
 
MainWindow::~MainWindow()
{
  delete ui;
}
 
void MainWindow::paintEvent(QPaintEvent *event){
  static QPoint hourHand[3] = {
   QPoint(5, 3),
   QPoint(-5, 3),
   QPoint(0, -30)
  };
  static QPoint minuteHand[3] = {
   QPoint(4, 6),
   QPoint(-4, 6),
   QPoint(0, -45)
  };
  static QPoint secondHand[3] = {
   QPoint(2, 10),
   QPoint(-2, 10),
   QPoint(0, -60)
  };
 
 
  //颜色
  QColor hourColor(0, 185, 211, 238);
  QColor minuteColor(0, 96, 123, 139);
  QColor secondColor(0, 176, 226, 255);
 
  int side = qMin(width(), height());
  QTime time = QTime::currentTime();
 
  QPainter painter( this );
  painter.setRenderHint(QPainter::Antialiasing);
  //表盘
  QBrush brush1(QColor(164,211,238));
  QPen pen1(QColor(164,211,238));
  painter.setBrush(brush1);
  painter.setPen(pen1);
  painter.drawEllipse(QPoint(200,200),200/3*2,200/3*2);
 
  QBrush brush2(QColor(245,245,245));
  QPen pen2(QColor(245,245,245));
  painter.setBrush(brush2);
  painter.setPen(pen2);
  painter.drawEllipse(QPoint(200,200),194/3*2,194/3*2);
 
  QBrush brush3(QColor(250,250,250));
  QPen pen3(QColor(250,250,250));
  painter.setBrush(brush3);
  painter.setPen(pen3);
  painter.drawEllipse(QPoint(200,200),183/3*2,183/3*2);
 
  QBrush brush4(QColor(255,255,255));
  QPen pen4(QColor(255,255,255));
  painter.setBrush(brush4);
  painter.setPen(pen4);
  painter.drawEllipse(QPoint(200,200),175/3*2,175/3*2);
 
  painter.setRenderHint(QPainter::Antialiasing);
  painter.translate(width()/4, height()/2);
  painter.scale(side/200.0, side/200.0);
 
  painter.setPen(Qt::NoPen);
  painter.setBrush(hourColor);
 
  painter.save();
  painter.rotate(30.0 * (( time .hour() + time .minute() / 60.0)));
  painter.drawConvexPolygon(hourHand, 3);
  painter.restore();
 
  //刻度
  painter.setPen(hourColor);
  for ( int i = 0; i < 12; ++i) {
 
   painter.rotate(30.0);
   painter.drawLine(66,0,72,0);
   painter.drawText(-15, -65, 30, 30,Qt::AlignHCenter,QString::number(i+1));
  }
 
  //分钟
  painter.setPen(Qt::NoPen);
  painter.setBrush(minuteColor);
 
  painter.save();
  painter.rotate(6.0 * ( time .minute() + time .second() / 60.0));
  painter.drawConvexPolygon(minuteHand, 3);
  painter.restore();
 
  painter.setPen(minuteColor);
  for ( int j = 0; j < 60; ++j) {
   if ((j % 5) != 0)
    painter.drawLine(68, 0, 72, 0);
   painter.rotate(6.0);
  }
 
  //秒钟
  painter.setPen(Qt::NoPen);
  painter.setBrush(secondColor);
 
  painter.save();
  painter.rotate(6.0 * time .second());
  painter.drawConvexPolygon(secondHand, 3);
  painter.restore();
 
  painter.end();
}
 
void MainWindow::countTime(){
  QTime t = QTime::currentTime();
  QString text=t.toString( "hh:mm:ss" );
  if (showColon){
   text[2] = ':' ;
   text[5] = ':' ;
   showColon = false ;
  }
  else {
   text[2] = ' ' ;
   text[5] = ' ' ;
   showColon = true ;
  }
  ui->lcdNumber->display(text);
  ui->lcdNumber_2->display(text);
}

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我.

原文链接：https://blog.csdn.net/PlanetRT/article/details/106741380 。

最后此篇关于Qt实现简易时钟的文章就讲到这里了,如果你想了解更多关于Qt实现简易时钟的内容请搜索CFSDN的文章或继续浏览相关文章，希望大家以后支持我的博客！ 。

25 4 0
文章推荐： Qt实现指针式时钟 Qt实现动态时钟
文章推荐： Android程序开发之自定义设置TabHost，TabWidget样式
文章推荐： 探寻Android的线程问题
文章推荐： C++实现简易五子棋游戏
qq735679552
个人简介

我是一名优秀的程序员,十分优秀！

滴滴打车优惠券免费领取
滴滴打车优惠券
全站热门文章
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com