QSystemTrayIcon类学习

 

代码来自“QT小神童”视频

#ifndef WIDGET_H
#define WIDGET_H

#include <QtGui/QWidget>
#include <QSystemTrayIcon>
#include <QTimer>
#include <QLabel>
#include <QPixmap>
#include <QApplication>
#include <QDesktopWidget>
#include <QList>

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = 0);
    ~Widget();
protected slots:
    void flash();
    void handle(QSystemTrayIcon::ActivationReason);
    void showPic();
private:
    QSystemTrayIcon *sysIcon;
    bool flag;
    QTimer *timer2;
    QLabel *label;
    QList<QLabel *> list;
    int i;
    int j;
};

#endif // WIDGET_H

实现文件

#include "widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
    flag=0;
    i=0;
    j=0;
    sysIcon=new QSystemTrayIcon;
   // sysIcon->setIcon(QIcon(":/heart.png"));
    sysIcon->show();
    connect(sysIcon,SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
            this,SLOT(handle(QSystemTrayIcon::ActivationReason)));
    QTimer *timer1=new QTimer(this);
    timer1->start(500);
    connect(timer1,SIGNAL(timeout()),this,SLOT(flash()));
    timer2=new QTimer(this);
    connect(timer2,SIGNAL(timeout()),this,SLOT(showPic()));
}

Widget::~Widget()
{

}

void Widget::flash()
{
    switch(flag)
    {
    case 0:{sysIcon->setIcon(QIcon(":/heart.png"));
            flag=1;
            break;
        }
    case 1:{sysIcon->setIcon(QIcon(":/123.png"));
        flag=0;
        break;
        }
    }
}

void Widget::handle(QSystemTrayIcon::ActivationReason reason)
{
    switch(reason)
    {
    case QSystemTrayIcon::DoubleClick:
        timer2->start(1000);
    }
}

void Widget::showPic()
{
    label=new QLabel;
    label->setWindowFlags(Qt::FramelessWindowHint|Qt::SubWindow);
    label->setAttribute(Qt::WA_DeleteOnClose);
    QPixmap pix(":/heart.png");
    label->setPixmap(pix);
    label->resize(pix.rect().width(),pix.rect().height());

 

    if(i*label->width()>QApplication::desktop()->screenGeometry().width())
    {
        i=0;
        j++;
    }
    if((j+1)*label->height()>QApplication::desktop()->screenGeometry().height())
    {
        j=0;

        for(int count=0;count< list.size();count++)
            list[count]->close();
        list.clear();
    }
    list.append(label);
    label->setGeometry(0+i*label->width(),0+j*label->height(),label->width(),label->height());
    label->show();
    i++;

}

 

主程序文件

#include <QtGui/QApplication>
#include "widget.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();

    return a.exec();
}

资源文件