27.Qt时钟

  • myclock.h 
     1 #ifndef MYCLOCK_H
 2 #define MYCLOCK_H
 3 
 4 #include <QObject>
 5 #include <QLCDNumber>
 6 #include <QWidget>
 7 #include <QMouseEvent>
 8 
 9 class myclock : public QLCDNumber
10 {
11     Q_OBJECT
12 public:
13     myclock(QWidget* parent=0);
14     void mousePressEvent(QMouseEvent *event);
15     void mouseMoveEvent(QMouseEvent *event);
16 private:
17     QPoint pos;
18     bool showcolon;
19 
20 private slots:
21     void showtime();
22 };
23 
24 #endif // MYCLOCK_H

     

  • myclock.cpp 1 #include "myclock.h" 
     2 #include <QTimer>
 3 #include <QTime>
 4 #include <QPalette>
 5 
 6 myclock::myclock(QWidget* parent):QLCDNumber(parent)
 7 {
 8     //设定颜色
 9     QPalette p = palette();
10     p.setColor(QPalette::Window,Qt::blue);
11     setPalette(p);
12 
13     //隐藏标题,关闭按钮
14     setWindowFlags(Qt::FramelessWindowHint);
15     //设置透明度
16     setWindowOpacity(0.5);
17 
    　　    //创建事件空间
18     QTimer *timer = new QTimer(this);
           //与事件绑定
    19     connect(timer,SIGNAL(timeout()),this,SLOT(showtime()));
           //多长时间改变一次
    20     timer->start(1000);
           //显示时间
    21     showtime();
22     resize(300,120);
23 }
24 
25 void myclock::mousePressEvent(QMouseEvent *event)
26 {
27 
28 }
29 
30 void myclock::mouseMoveEvent(QMouseEvent *event)
31 {
32 
33 }
34 
35 void myclock::showtime()
36 {
37     QTime time = QTime::currentTime();//当前时间
38     QString str = time.toString("hh:mm:ss");//时间
39     this->display(str);
40 }

     

posted @ 2018-04-09 22:23  喵小喵~  阅读(216)  评论(0)  编辑  收藏  举报