Qt软件开发文档17---自定义messagebox窗口

1.CustomMsgBox.h

#ifndef CUSTOMMSGBOX_H
#define CUSTOMMSGBOX_H

#include <QDialog>
#include <QMessageBox>
#include <QDialogButtonBox>
#include <QVBoxLayout>
#include <QPushButton>
#include <QLabel>
#include <QMouseEvent>
class CustomMsgBox : public QDialog
{
    Q_OBJECT

public:
    explicit CustomMsgBox(QWidget *parent = 0,
                          const QString title = QString::fromLocal8Bit("提示"),
                          const QString text = "",
                          QMessageBox::StandardButtons  = QMessageBox::Ok,
                          QMessageBox::StandardButton defaultButton = QMessageBox::Ok);
    ~CustomMsgBox();

    void setDefalutButton(QPushButton *button);
    void setDefaultButton(QMessageBox::StandardButton defaultButton );

private:
    QString          m_title;
    QString          m_content;
    QWidget          *m_topWgt;
    QLabel           *m_lblTitle;
    QLabel           *m_btnIcon;
    QPushButton      *m_btnClose;
    QWidget          *m_bottomWgt;
    QDialogButtonBox *m_pButtonBox;
    QLabel           *m_lblContent;
    QVBoxLayout      *m_bottomBoxVLayout;
    QMessageBox::StandardButtons m_standButtons;
    bool             m_mouserPressed;
    QPoint           m_point;
private:
    void initWgt();
    void initTopWgt();
    void initBottomWgt();
    int  execReturnCode(QAbstractButton *button);
    bool eventFilter(QObject *, QEvent *);
private slots:
    void onButtonClicked(QAbstractButton *button);
    void sltOnBtnClose();
protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
};

#endif // CUSTOMMSGBOX_H

2.类CustomMsgBox.cpp

#include "custommsgbox.h"
#define strBtnDarkSty                       QString::fromLocal8Bit("QPushButton {border:1px solid rgb(97, 172, 240);"
    "background-color:rgb(44, 112, 177);font-size:%1px;font-family:Microsoft YaHei UI;color:white;"
    "}"
    "QPushButton:pressed {"
    "background-color: rgb(213, 239, 252);color:black;"
    "}"
    ).arg(int(17))

CustomMsgBox::CustomMsgBox(QWidget *parent,QString title,QString content,
                           QMessageBox::StandardButtons standButtons,
                           QMessageBox::StandardButton defaultButton)
    : QDialog(parent),m_standButtons(standButtons),m_content(content),m_title(title)
    ,m_pButtonBox(new QDialogButtonBox(this))
{
    initWgt();


}

void CustomMsgBox::initWgt(){
    setWindowFlags(Qt::FramelessWindowHint|Qt::Dialog);
    setWindowTitle(m_title);
    setContentsMargins(1,1,1,1);

    QVBoxLayout *m_mainLayout = new QVBoxLayout(this);
    m_topWgt = new QWidget(this);
    m_topWgt->setContentsMargins(8, 0, 16, 0);
    m_topWgt->setFixedSize(430,33);
    initTopWgt();
    m_bottomWgt = new QWidget(this);
    m_bottomWgt->setFixedSize(430,165);
    m_bottomWgt->setContentsMargins(8 , 8 , 8 , 8 );
    initBottomWgt();
    m_mainLayout->setSpacing(0);
    m_mainLayout->setContentsMargins(0,0,0,0);

    setStyleSheet("border:1px solid rgb(44,112,177);");
    m_topWgt->setStyleSheet("QWidget{ margin: 0px;background-color:white;border:0px;}"
                            "QPushButton{border:0px;margin:0px;}"
                            "QLabel{border:0px;margin:0px;}");//border:1px solid #92C8E8;
    m_bottomWgt->setStyleSheet("QWidget{background:rgb(213, 239, 252);border:0px;}");

    m_mainLayout->setSpacing(0);
    m_mainLayout->addWidget(m_topWgt);
    m_mainLayout->addWidget(m_bottomWgt);
    show();
}

void CustomMsgBox::initTopWgt()
{
    QHBoxLayout *topHLayout = new QHBoxLayout(m_topWgt);
    QWidget * leftTmp = new QWidget(m_topWgt);
    leftTmp->setContentsMargins(0, 0, 0, 0);
    QHBoxLayout *leftTmpLay = new QHBoxLayout(leftTmp);
    leftTmpLay->setContentsMargins(0, 0, 0, 0);

    topHLayout->setContentsMargins(0, 0, 0, 0);
    m_btnIcon = new QLabel(leftTmp);
    m_btnIcon->setPixmap(QPixmap("...configure/icons/tishitubiao.png"));

    m_btnIcon->installEventFilter((QObject*) this);
    m_lblTitle = new QLabel(leftTmp);
    QFont ft = QFont("Microsoft YaHei UI");
    ft.setPixelSize(18);
    m_lblTitle->setFont(ft);
    m_lblTitle->setText(m_title);
    leftTmpLay->setSpacing(7);
    leftTmpLay->addWidget(m_btnIcon,0,Qt::AlignHCenter);
    leftTmpLay->addWidget(m_lblTitle, 0, Qt::AlignHCenter);

    m_btnClose = new QPushButton(this);
    m_btnClose->setIcon(QIcon("...configure/icons/guanbi.png"));
    m_btnClose->setIconSize(QSize(20, 20));
    topHLayout->addWidget(leftTmp, 0, Qt::AlignLeft);
    topHLayout->addWidget(m_btnClose, 0, Qt::AlignRight);

    connect(m_btnClose,SIGNAL(clicked()),this,SLOT(sltOnBtnClose()));

}

void CustomMsgBox::initBottomWgt()
{
    QWidget *tmp = new QWidget(m_bottomWgt);
    tmp->setStyleSheet("border: 1px solid rgb(44, 112, 177); background : rgb(255, 255, 255);");
    QVBoxLayout *  tmpL = new QVBoxLayout(m_bottomWgt);
    tmpL->setContentsMargins(0, 0, 0, 0);
    tmpL->addWidget(tmp);

    m_bottomBoxVLayout = new QVBoxLayout(tmp);
    m_lblContent = new QLabel(tmp);
    m_lblContent->setText(m_content);
    m_lblContent->setStyleSheet("border: 0px;font-family:Microsoft YaHei UI;font-size:14px;color:rgb(74,74,74);");


    QWidget *hBoxButtins = new QWidget(tmp);
    hBoxButtins->setStyleSheet("border:0px");
    QHBoxLayout *hLayoutButtons  = new QHBoxLayout(hBoxButtins);
    hLayoutButtons->setContentsMargins(0,0,0,0);
    hLayoutButtons->addWidget(m_pButtonBox,Qt::AlignRight);
    m_pButtonBox->setStandardButtons(QDialogButtonBox::StandardButtons((int)m_standButtons));
    QList<QAbstractButton *> buttons =  m_pButtonBox->buttons();
    for(int i = 0; i < buttons.size(); i++) {
        QDialogButtonBox::StandardButton button = m_pButtonBox->standardButton(buttons.at(i));
        QPushButton *pushButton = m_pButtonBox->button(button);
        pushButton->setFixedSize(QSize(84, 30));
        if(button == QDialogButtonBox::Ok || button == QDialogButtonBox::Yes) {
            pushButton->setText(QString::fromLocal8Bit("确 定"));
        } else if(button == QDialogButtonBox::Cancel){
            pushButton->setText(QString::fromLocal8Bit("取 消"));
        }
        pushButton->setStyleSheet(strBtnDarkSty);
    }
    m_bottomBoxVLayout->setContentsMargins(48, 30, 48, 10);
    m_bottomBoxVLayout->addWidget(m_lblContent,0,Qt::AlignCenter);
    m_bottomBoxVLayout->addWidget(hBoxButtins,0,Qt::AlignCenter);
    connect(m_pButtonBox, SIGNAL(clicked(QAbstractButton*)), this,SLOT(onButtonClicked(QAbstractButton*)));

}

void CustomMsgBox::setDefalutButton(QPushButton *button)
{
    if(!m_pButtonBox->buttons().contains(button)) {
        return ;
    }
    button->setDefault(true);
    button->setFocus();
}

void CustomMsgBox::setDefaultButton(QMessageBox::StandardButton defaultButton )
{
    //setDefaultButton(m_pButtonBox->button(QDialogButtonBox::StandardButton(defaultButton)));
}

int CustomMsgBox::execReturnCode(QAbstractButton *button)
{
    return m_pButtonBox->standardButton(button);
}

void CustomMsgBox::onButtonClicked(QAbstractButton *button)
{
    done(execReturnCode(button));
}

void CustomMsgBox::mousePressEvent(QMouseEvent *event)
{
    if(event->button() == Qt::LeftButton) {
        m_mouserPressed = true;
        m_point = event->globalPos() - this->pos();
        event->accept();
    }
}

void CustomMsgBox::mouseMoveEvent(QMouseEvent *event)
{
    if(m_mouserPressed && (event->buttons() & Qt::LeftButton)) {
        this->move(event->globalPos() - m_point);
        event->accept();
    }
}

void CustomMsgBox::mouseReleaseEvent(QMouseEvent * /*event*/)
{
    m_mouserPressed = false;
}

void CustomMsgBox::sltOnBtnClose()
{
    this->close();
}

bool CustomMsgBox::eventFilter(QObject* obj, QEvent *event)
{
    if (QEvent::MouseButtonDblClick == event->type()) {
        if (obj == m_btnIcon) {
            close();
            return true;
        }
    }
    return false;
}
CustomMsgBox::~CustomMsgBox()
{

}

3.CustomMsgBox调用

custommsgbox = new CustomMsgBox(this,QString::fromLocal8Bit("系统检测到有更新"),QString::fromLocal8Bit("是否现在进行更新？"),QMessageBox::Open|QMessageBox::Cancel|QMessageBox::Ok);

    int btn = custommsgbox->exec();
    switch (btn) {
    case QMessageBox::Ok:

        break;
    case QMessageBox::Cancel:

        break;
    case QMessageBox::Open:

        break;
    }

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