完全自定义QMessageBox样式
1、综述
Qt大佬：一去、二三里的自定义QMessageBox
上述链接的窗体继承于大神的自定义Widget，我这里稍作修改，继承于QDialog方便了使用，这里可以任意实现QMessageBox的样式而不受系统约束（设置setWindowFlags(Qt::FramelessWindowHint | Qt::Dialog);后可自定义标题栏）
自定义QMessageBox窗体结构示意：
2、头文件：
#ifndef MESSAGEBOX_H
#define MESSAGEBOX_H
#include
#include
#include
class QLabel;
class MessageBox : public QDialog
{
Q_OBJECT
public:
explicit MessageBox(QWidget *parent = 0, const QString &title = tr("Tip"), const QString &text = "",
QMessageBox::StandardButtons buttons = QMessageBox::Ok, QMessageBox::StandardButton defaultButton = QMessageBox::Ok);
~MessageBox();
QAbstractButton *clickedButton() const;
QMessageBox::StandardButton standardButton(QAbstractButton *button) const;
// 设置默认按钮
void setDefaultButton(QPushButton *button);
void setDefaultButton(QMessageBox::StandardButton button);
// 设置窗体标题
void setTitle(const QString &title);
// 设置提示信息
void setText(const QString &text);
// 设置窗体图标
void setIcon(const QString &icon);
// 添加控件-替换提示信息所在的QLabel
void addWidget(QWidget *pWidget);
protected:
// 多语言翻译
void changeEvent(QEvent *event);
private slots:
void onButtonClicked(QAbstractButton *button);
private:
void translateUI();
int execReturnCode(QAbstractButton *button);
private:
QLabel *m_pIconLabel;
QLabel *m_pLabel;
// QLayout m_pLayout;
QGridLayout *m_pGridLayout;
QDialogButtonBox *m_pButtonBox;
QAbstractButton *m_pClickedButton;
QAbstractButton *m_pDefaultButton;
};
QMessageBox::StandardButton showInformation(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton);
QMessageBox::StandardButton showError(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton);
QMessageBox::StandardButton showSuccess(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton);
QMessageBox::StandardButton showQuestion(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton);
QMessageBox::StandardButton showWarning(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton);
QMessageBox::StandardButton showCritical(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton);
QMessageBox::StandardButton showCheckBoxQuestion(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton);
#endif // MESSAGEBOX_H
3、源文件：
#include
#include
#include
#include
#include
#include
#include
#include "messagebox.h"
MessageBox::MessageBox(QWidget *parent, const QString &title, const QString &text,
QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton)
: QDialog(parent)
{
setWindowIcon(QIcon(":/Images/logo"));
setWindowTitle(title);
setMinimumSize(300, 130);
m_pButtonBox = new QDialogButtonBox(this);
m_pButtonBox->setStandardButtons(QDialogButtonBox::StandardButtons(int(buttons)));
setDefaultButton(defaultButton);
QPushButton *pYesButton = m_pButtonBox->button(QDialogButtonBox::Yes);
if (pYesButton != NULL)
{
pYesButton->setObjectName("blueButton");
pYesButton->setStyle(QApplication::style());
}
m_pIconLabel = new QLabel(this);
m_pLabel = new QLabel(this);
QPixmap pixmap(":/Images/information");
m_pIconLabel->setPixmap(pixmap);
m_pIconLabel->setFixedSize(35, 35);
m_pIconLabel->setScaledContents(true);
m_pLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
m_pLabel->setObjectName("whiteLabel");
m_pLabel->setOpenExternalLinks(true);
m_pLabel->setText(text);
m_pGridLayout = new QGridLayout();
m_pGridLayout->addWidget(m_pIconLabel, 0, 0, 2, 1, Qt::AlignTop);
m_pGridLayout->addWidget(m_pLabel, 0, 1, 2, 1);
m_pGridLayout->addWidget(m_pButtonBox, m_pGridLayout->rowCount(), 0, 1, m_pGridLayout->columnCount());
m_pGridLayout->setSizeConstraint(QLayout::SetNoConstraint);
m_pGridLayout->setHorizontalSpacing(10);
m_pGridLayout->setVerticalSpacing(10);
m_pGridLayout->setContentsMargins(10, 10, 10, 10);
this->setLayout(m_pGridLayout);
translateUI();
connect(m_pButtonBox, SIGNAL(clicked(QAbstractButton*)), this, SLOT(onButtonClicked(QAbstractButton*)));
}
MessageBox::~MessageBox()
{
}
void MessageBox::changeEvent(QEvent *event)
{
switch (event->type())
{
case QEvent::LanguageChange:
translateUI();
break;
default:
break;
}
}
void MessageBox::translateUI()
{
QPushButton *pYesButton = m_pButtonBox->button(QDialogButtonBox::Yes);
if (pYesButton != NULL)
pYesButton->setText(tr("Yes"));
QPushButton *pNoButton = m_pButtonBox->button(QDialogButtonBox::No);
if (pNoButton != NULL)
pNoButton->setText(tr("No"));
QPushButton *pOkButton = m_pButtonBox->button(QDialogButtonBox::Ok);
if (pOkButton != NULL)
pOkButton->setText(tr("Ok"));
QPushButton *pCancelButton = m_pButtonBox->button(QDialogButtonBox::Cancel);
if (pCancelButton != NULL)
pCancelButton->setText(tr("Cancel"));
}
QMessageBox::StandardButton MessageBox::standardButton(QAbstractButton *button) const
{
return (QMessageBox::StandardButton)m_pButtonBox->standardButton(button);
}
QAbstractButton *MessageBox::clickedButton() const
{
return m_pClickedButton;
}
int MessageBox::execReturnCode(QAbstractButton *button)
{
int nResult = m_pButtonBox->standardButton(button);
return nResult;
}
void MessageBox::onButtonClicked(QAbstractButton *button)
{
m_pClickedButton = button;
done(execReturnCode(button));
}
void MessageBox::setDefaultButton(QPushButton *button)
{
if (!m_pButtonBox->buttons().contains(button))
return;
m_pDefaultButton = button;
button->setDefault(true);
button->setFocus();
}
void MessageBox::setDefaultButton(QMessageBox::StandardButton button)
{
setDefaultButton(m_pButtonBox->button(QDialogButtonBox::StandardButton(button)));
}
void MessageBox::setTitle(const QString &title)
{
setWindowTitle(title);
}
void MessageBox::setText(const QString &text)
{
m_pLabel->setText(text);
}
void MessageBox::setIcon(const QString &icon)
{
m_pIconLabel->setPixmap(QPixmap(icon));
}
void MessageBox::addWidget(QWidget *pWidget)
{
m_pLabel->hide();
m_pGridLayout->addWidget(pWidget, 0, 1, 2, 1);
}
QMessageBox::StandardButton showInformation(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton)
{
MessageBox msgBox(parent, title, text, buttons, defaultButton);
msgBox.setIcon(":/Images/information");
if (msgBox.exec() == -1)
return QMessageBox::Cancel;
return msgBox.standardButton(msgBox.clickedButton());
}
QMessageBox::StandardButton showError(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton)
{
MessageBox msgBox(parent, title, text, buttons, defaultButton);
msgBox.setIcon(":/Images/error");
if (msgBox.exec() == -1)
return QMessageBox::Cancel;
return msgBox.standardButton(msgBox.clickedButton());
}
QMessageBox::StandardButton showSuccess(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton)
{
MessageBox msgBox(parent, title, text, buttons, defaultButton);
msgBox.setIcon(":/Images/success");
if (msgBox.exec() == -1)
return QMessageBox::Cancel;
return msgBox.standardButton(msgBox.clickedButton());
}
QMessageBox::StandardButton showQuestion(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton)
{
MessageBox msgBox(parent, title, text, buttons, defaultButton);
msgBox.setIcon(":/Images/question");
if (msgBox.exec() == -1)
return QMessageBox::Cancel;
return msgBox.standardButton(msgBox.clickedButton());
}
QMessageBox::StandardButton showWarning(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton)
{
MessageBox msgBox(parent, title, text, buttons, defaultButton);
msgBox.setIcon(":/images/warning");
if (msgBox.exec() == -1)
return QMessageBox::Cancel;
return msgBox.standardButton(msgBox.clickedButton());
}
QMessageBox::StandardButton showCritical(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton)
{
MessageBox msgBox(parent, title, text, buttons, defaultButton);
msgBox.setIcon(":/Images/warning");
if (msgBox.exec() == -1)
return QMessageBox::Cancel;
return msgBox.standardButton(msgBox.clickedButton());
}
QMessageBox::StandardButton showCheckBoxQuestion(QWidget *parent, const QString &title,
const QString &text, QMessageBox::StandardButtons buttons,
QMessageBox::StandardButton defaultButton)
{
MessageBox msgBox(parent, title, text, buttons, defaultButton);
msgBox.setIcon(":/Images/question");
QCheckBox *pCheckBox = new QCheckBox(&msgBox);
pCheckBox->setText(text);
msgBox.addWidget(pCheckBox);
if (msgBox.exec() == -1)
return QMessageBox::Cancel;
QMessageBox::StandardButton standardButton = msgBox.standardButton(msgBox.clickedButton());
if (standardButton == QMessageBox::Yes)
{
return pCheckBox->isChecked() ? QMessageBox::Yes : QMessageBox::No;
}
return QMessageBox::Cancel;
}
4、使用方法
将这个类加入到项目中，其他类使用时，包含此类的头文件，之后直接调用此类的全局函数即可，如:
#include "messagebox.h"
void main()
{
showInformation(this,"ss","rrrr",QMessageBox::Ok,QMessageBox::No);
}