Qt界面制作（QSS、获取屏幕分辨率、自定义控件、版权）

源码下载地址：

https://download.csdn.net/download/qq78442761/10534055

程序运行截图：

程序版权

程序结构图如下：

主要就几点：

1.QSS

2.自定义控件

3.获取屏幕分辨率

代码如下：

mylabel.h

#ifndef MYLABEL_H
#define MYLABEL_H

#include <QObject>
#include <QLabel>


#define CloseLabel 0
#define MinLabel 1



class MyLabel : public QLabel
{
    Q_OBJECT
public:
    MyLabel(QWidget *parent=0);
    void setStatus(const int status);
    ~MyLabel();

protected:
    void mouseReleaseEvent(QMouseEvent *event);

signals:
    void prepareToClose();
    void prepareToMin();

private:
    int m_status;

};

#endif // MYLABEL_H

widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QPoint>

class QTimer;

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

    void mouseMoveEvent(QMouseEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);

protected slots:
    void showDynamicTime();
    void windowsClose();
    void windowsShowMin();


private:
    Ui::Widget *ui;
    QPoint z;
    QTimer *m_pTimer;
};

#endif // WIDGET_H

main.cpp

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

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

    return a.exec();
}

mylabel.cpp

#include "mylabel.h"
#include <QDebug>
#include <QMouseEvent>

MyLabel::MyLabel(QWidget *parent):
    QLabel(parent)
{

}

void MyLabel::setStatus(const int status)
{
    m_status=status;
}

MyLabel::~MyLabel()
{

}

void MyLabel::mouseReleaseEvent(QMouseEvent *event)
{
    if(event->button()==Qt::LeftButton){
        if(m_status==CloseLabel){
            emit prepareToClose();
        }
        else if(m_status==MinLabel){
            emit prepareToMin();
        }
    }
}

widget.cpp

#include "widget.h"
#include "ui_widget.h"

#include <QMouseEvent>
#include <QFile>
#include <QEvent>
#include <QDateTime>
#include <QTimer>
#include <QRect>
#include <QDesktopWidget>
#include <QDebug>

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    ui->timeLabel->setText(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"));
    this->setWindowFlags(Qt::FramelessWindowHint);
    ui->titleLabel->setText("博客：CSDN IT1995");

    QFile myFile;
    myFile.setFileName(":/img/myQSS.txt");
    myFile.open(QFile::ReadOnly);
    QString styleSheet=QString(myFile.readAll());
    qApp->setStyleSheet(styleSheet);
    myFile.close();
    QRect sceenRect=QApplication::desktop()->screenGeometry();
    setFixedSize(sceenRect.width()/6,sceenRect.height()/2);


    m_pTimer=new QTimer(this);
    connect(m_pTimer,SIGNAL(timeout()),this,SLOT(showDynamicTime()));
    m_pTimer->start(1000);

    ui->closeLabel->setStatus(CloseLabel);
    ui->minLabel->setStatus(MinLabel);
    connect(ui->closeLabel,SIGNAL(prepareToClose()),this,SLOT(windowsClose()));
    connect(ui->minLabel,SIGNAL(prepareToMin()),this,SLOT(windowsShowMin()));

}

Widget::~Widget()
{
    delete ui;
}

void Widget::mouseMoveEvent(QMouseEvent *event)
{
    QWidget::mouseMoveEvent(event);
    QPoint y=event->globalPos();
    QPoint x=y-z;
    this->move(x);
}

void Widget::mousePressEvent(QMouseEvent *event)
{
    QWidget::mousePressEvent(event);
    QPoint y=event->globalPos();
    QPoint x=this->geometry().topLeft();
    z=y-x;
}

void Widget::mouseReleaseEvent(QMouseEvent *event)
{
    QWidget::mouseReleaseEvent(event);
    z=QPoint();
}

void Widget::showDynamicTime()
{
    ui->timeLabel->setText(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"));
}

void Widget::windowsClose()
{
    this->close();
}

void Widget::windowsShowMin()
{
    this->showMinimized();
}

QSS代码如下：

MyLabel#minLabel{
	image: url(:/img/min.png);
}
MyLabel#minLabel:hover{
	image: url(:/img/min_hover.png);
}

MyLabel#closeLabel{
	image: url(:/img/close.png);
}
MyLabel#closeLabel:hover{
	image: url(:/img/close_hover.png);
}

QLabel#iconLabel{
	image: url(:/img/icon.png);
}
QLabel#iconLabel:hover{
	image: url(:/img/icon_hover.png);
}

QLabel#titleLabel{
	color: rgb(200, 39, 11);
	font: 14pt "华文琥珀";
}

QLabel#titleLabel:hover{
	color: rgb(0, 85, 255);
	font: 14pt "华文琥珀";
}

QLabel#timeLabel{
	color: rgb(200, 39, 11);
}

QLabel#timeLabel:hover{
	color: rgb(0, 85, 255);
}

QWidget#Widget{
	background-color: rgb(0, 0, 0);
}

QWidget#mainWidget{
	background-color: rgb(255, 255, 255);
}