QMessageBox 在MAC下更加自然

说明

在MAC写过QT程序的程序员应该都知道，QT默认的QMessageBox没有MAC系统的效果，在网上找到了一篇关于这方面的文章，但是这篇文章写的有个缺点，就是使用信号的方式，使用起来很不方便。

让你的 Qt 桌面程序看上去更加 native（五）：QDialog

解决

我自己写了一个类文件，以达到更好的使用QMessageBox。将下面的代码复制到你的工程中，就可以方便的使用。

头文件#ifndef QMESSAGEBOXEX_H

#define QMESSAGEBOXEX_H



#include <QMessageBox>



class QMessageBoxEx : public QMessageBox

{

public:

    static QMessageBoxEx *shareQMessageBoxEx();



public:

    QMessageBoxEx();

    int information(QWidget *parent, const QString &title,

                    const QString &text, StandardButtons buttons = Ok,

                    StandardButton defaultButton = NoButton);



    int question(QWidget *parent, const QString &title,

                 const QString &text, StandardButtons buttons = StandardButtons(Yes | No),

                 StandardButton defaultButton = NoButton);



    int warning(QWidget *parent, const QString &title,

                const QString &text, StandardButtons buttons = Ok,

                StandardButton defaultButton = NoButton);



    int critical(QWidget *parent, const QString &title,

                 const QString &text, StandardButtons buttons = Ok,

                 StandardButton defaultButton = NoButton);

};



#endif // QMESSAGEBOXEX_H

源文件#include "qmessageboxex.h"



static QMessageBoxEx *m_pThis = NULL;

QMessageBoxEx *QMessageBoxEx::shareQMessageBoxEx()

{

    if (m_pThis == NULL)

        m_pThis = new QMessageBoxEx();

    return m_pThis;

}



QMessageBoxEx::QMessageBoxEx()

{

}



int QMessageBoxEx::information(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)

{

    this->setIcon(QMessageBox::Information);

    this->setParent(parent);

    this->setWindowTitle(title);

    this->setText(text);

    this->setStandardButtons(buttons);

    this->setDefaultButton(defaultButton);

    this->setWindowModality(Qt::WindowModal);

    return this->exec();

}



int QMessageBoxEx::question(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)

{

    this->setIcon(QMessageBox::Question);

    this->setParent(parent);

    this->setWindowTitle(title);

    this->setText(text);

    this->setStandardButtons(buttons);

    this->setDefaultButton(defaultButton);

    this->setWindowModality(Qt::WindowModal);

    return this->exec();

}



int QMessageBoxEx::warning(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)

{

    this->setIcon(QMessageBox::Warning);

    this->setParent(parent);

    this->setWindowTitle(title);

    this->setText(text);

    this->setStandardButtons(buttons);

    this->setDefaultButton(defaultButton);

    this->setWindowModality(Qt::WindowModal);

    return this->exec();

}



int QMessageBoxEx::critical(QWidget *parent, const QString &title, const QString &text, QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)

{

    this->setIcon(QMessageBox::Critical);

    this->setParent(parent);

    this->setWindowTitle(title);

    this->setText(text);

    this->setStandardButtons(buttons);

    this->setDefaultButton(defaultButton);

    this->setWindowModality(Qt::WindowModal);

    return this->exec();

}

使用

调用事例        if (QMessageBox::Yes == QMessageBoxEx::shareQMessageBoxEx()->question(Dialog::shareDialog(),tr("Question"),tr("project folder is exists, will rename \"proj.qt.bak\" !"),

                                                                              QMessageBox::Yes|QMessageBox::No,QMessageBox::No))

        {

            if (false == QDir(projectFileInfo.absoluteFilePath()).rename(qtProFileInfo.absoluteFilePath(),"proj.qt.bak"))

            {

                QMessageBoxEx::shareQMessageBoxEx()->critical(Dialog::shareDialog(),tr("Error"),tr("rename proj.qt failure"));

                return;

            }

        }

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