• 【Qt之QWizardPage】使用

    介绍

    QWizardPage类是向导页面的基类。
    QWizard表示一个向导。每个页面都是一个QWizardPage。当创建自己的向导时，可以直接使用QWizardPage，也可以子类化它以获得更多控制。
    页面具有以下属性，由QWizard呈现：a title，a subTitle和a set of pixmaps。有关详细信息，请参见向导页面元素。一旦将页面添加到向导中（使用QWizard :: addPage（）或QWizard :: setPage（）），wizard（）将返回指向相关的QWizard对象的指针。
    页面提供了五个虚函数，可以重新实现以提供自定义行为：

    • initializePage（）在用户单击向导的“下一步”按钮时调用以初始化页面的内容。如果您想从先前页面输入的内容中派生页面的默认值，则应该重新实现此函数。
    • cleanupPage（）在用户单击向导的“返回”按钮时调用以重置页面的内容。
    • validatePage（）在用户单击Next或Finish时验证页面。如果用户输入了不完整或无效的信息，通常会使用此函数显示错误消息。
    • nextId（）返回下一页的ID。它在创建非线性向导时很有用，这些向导允许基于用户提供的信息进行不同的遍历路径。
    • isComplete（）用于确定是否应启用或禁用“下一步”和/或“完成”按钮。如果重新实现isComplete（），还必须确保每当完成状态更改时发出completeChanged（）。

    通常，向导的“下一步”按钮和“完成”按钮是互斥的。如果isFinalPage（）返回true，则可用Finish；否则，可用下一步。默认情况下，isFinalPage（）仅在nextId（）返回-1时为true。如果要在页面上同时显示“下一步”和“完成”（允许用户执行“早期完成”），请在该页面上调用setFinalPage（true）。对于支持早期完成的向导，您可能还想在向导上设置HaveNextButtonOnLastPage和HaveFinishButtonOnEarlyPages选项。

    在许多向导中，页面的内容可能会影响后续页面的字段的默认值。为了方便页面之间的通信，QWizard支持“字段”机制，允许您在页面上注册字段（例如QLineEdit）并从任何页面访问其值。字段对整个向导程序是全局的，并使任何单个页面都可以访问存储在另一个页面中的信息，而无需将所有逻辑放入QWizard或页面明确知道彼此。使用registerField（）注册字段，可以使用field（）和setField（）随时访问它们。

    常用方法

    1. virtual void initializePage(int id)
      这个虚函数由QWizard::initializePage()调用，以便在页面显示之前对其进行准备，或者由于QWizard::restart()被调用，或者由于用户单击Next而显示页面。(但是，如果设置了QWizard::IndependentPages选项，则仅在第一次显示页面时调用此函数。)
      通过重新实现这个函数，您可以确保页面的字段是基于先前页面中的字段正确初始化的。例如:
    void OutputFilesPage: initializePage ()
｛
	QString className = field("className").toString();
	headerLineEdit->setText(className.toLower() + ".h");
	implementationLineEdit->setText(className.toLower() + ".cpp");
	outputDirLineEdit - > setText (QDir:: toNativeSeparators (QDir: tempPath ()));
}

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    默认实现什么都不做。
    2. void setButtonText(QWizard::WizardButton which, const QString &text)
    将按钮上的文本设置为本页上的文本。
    默认情况下，按钮上的文本依赖于QWizard::wizardStyle，但可以使用QWizard::setButtonText()为整个向导重新定义。

    setButtonText(QWizard::NextButton, "hei");

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    在这里插入图片描述
    3. void setCommitPage(bool commitPage)
    如果commitPage为true，则将该页设置为提交页;否则，将其设置为普通页面。
    提交页是表示不能通过单击“返回”或“取消”来撤消的操作的页面。
    提交按钮取代提交页面上的Next按钮。单击此按钮只调用QWizard::next()，就像单击next一样。
    直接从提交页面进入的页面会禁用后退按钮。

    setCommitPage(true);

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    在这里插入图片描述

    1. void setFinalPage(bool finalPage)
      如果finalPage为true，则显式地将此页面设置为final。
      调用setFinalPage(true)后，isFinalPage()返回true, Finish按钮可见(如果isComplete()返回true则启用)。
      调用setFinalPage(false)后，如果nextId()返回-1,isFinalPage()返回true;否则，返回false。

    示例

    .h

    #ifndef CLASSWIZARD_H
#define CLASSWIZARD_H

#include 

QT_BEGIN_NAMESPACE
class QCheckBox;
class QGroupBox;
class QLabel;
class QLineEdit;
class QRadioButton;
QT_END_NAMESPACE

class ClassWizard : public QWizard
{
    Q_OBJECT

public:
    ClassWizard(QWidget *parent = 0);

    void accept() override;
};

class IntroPage : public QWizardPage
{
    Q_OBJECT

public:
    IntroPage(QWidget *parent = 0);

private:
    QLabel *label;
};

class ClassInfoPage : public QWizardPage
{
    Q_OBJECT

public:
    ClassInfoPage(QWidget *parent = 0);

private:
    QLabel *classNameLabel;
    QLabel *baseClassLabel;
    QLineEdit *classNameLineEdit;
    QLineEdit *baseClassLineEdit;
    QCheckBox *qobjectMacroCheckBox;
    QGroupBox *groupBox;
    QRadioButton *qobjectCtorRadioButton;
    QRadioButton *qwidgetCtorRadioButton;
    QRadioButton *defaultCtorRadioButton;
    QCheckBox *copyCtorCheckBox;
};

class CodeStylePage : public QWizardPage
{
    Q_OBJECT

public:
    CodeStylePage(QWidget *parent = 0);

protected:
    void initializePage() override;

private:
    QCheckBox *commentCheckBox;
    QCheckBox *protectCheckBox;
    QCheckBox *includeBaseCheckBox;
    QLabel *macroNameLabel;
    QLabel *baseIncludeLabel;
    QLineEdit *macroNameLineEdit;
    QLineEdit *baseIncludeLineEdit;
};

class OutputFilesPage : public QWizardPage
{
    Q_OBJECT

public:
    OutputFilesPage(QWidget *parent = 0);

protected:
    void initializePage() override;

private:
    QLabel *outputDirLabel;
    QLabel *headerLabel;
    QLabel *implementationLabel;
    QLineEdit *outputDirLineEdit;
    QLineEdit *headerLineEdit;
    QLineEdit *implementationLineEdit;
};

class ConclusionPage : public QWizardPage
{
    Q_OBJECT

public:
    ConclusionPage(QWidget *parent = 0);

protected:
    void initializePage() override;

private:
    QLabel *label;
};

#endif


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    .cpp

    #include 

#include "classwizard.h"

ClassWizard::ClassWizard(QWidget *parent)
    : QWizard(parent)
{
    addPage(new IntroPage);
    addPage(new ClassInfoPage);
    addPage(new CodeStylePage);
    addPage(new OutputFilesPage);
    addPage(new ConclusionPage);

    setPixmap(QWizard::BannerPixmap, QPixmap(":/images/banner.png"));
    setPixmap(QWizard::BackgroundPixmap, QPixmap(":/images/background.png"));

    setWindowTitle(tr("Class Wizard"));
}

void ClassWizard::accept()
{
    QByteArray className = field("className").toByteArray();
    QByteArray baseClass = field("baseClass").toByteArray();
    QByteArray macroName = field("macroName").toByteArray();
    QByteArray baseInclude = field("baseInclude").toByteArray();

    QString outputDir = field("outputDir").toString();
    QString header = field("header").toString();
    QString implementation = field("implementation").toString();

    QByteArray block;

    if (field("comment").toBool()) {
        block += "/*\n";
        block += "    " + header.toLatin1() + '\n';
        block += "*/\n";
        block += '\n';
    }
    if (field("protect").toBool()) {
        block += "#ifndef " + macroName + '\n';
        block += "#define " + macroName + '\n';
        block += '\n';
    }
    if (field("includeBase").toBool()) {
        block += "#include " + baseInclude + '\n';
        block += '\n';
    }

    block += "class " + className;
    if (!baseClass.isEmpty())
        block += " : public " + baseClass;
    block += '\n';
    block += "{\n";

    /* qmake ignore Q_OBJECT */

    if (field("qobjectMacro").toBool()) {
        block += "    Q_OBJECT\n";
        block += '\n';
    }
    block += "public:\n";

    if (field("qobjectCtor").toBool()) {
        block += "    " + className + "(QObject *parent = 0);\n";
    } else if (field("qwidgetCtor").toBool()) {
        block += "    " + className + "(QWidget *parent = 0);\n";
    } else if (field("defaultCtor").toBool()) {
        block += "    " + className + "();\n";
        if (field("copyCtor").toBool()) {
            block += "    " + className + "(const " + className + " &other);\n";
            block += '\n';
            block += "    " + className + " &operator=" + "(const " + className
                     + " &other);\n";
        }
    }
    block += "};\n";

    if (field("protect").toBool()) {
        block += '\n';
        block += "#endif\n";
    }

    QFile headerFile(outputDir + '/' + header);
    if (!headerFile.open(QFile::WriteOnly | QFile::Text)) {
        QMessageBox::warning(0, QObject::tr("Simple Wizard"),
                             QObject::tr("Cannot write file %1:\n%2")
                             .arg(headerFile.fileName())
                             .arg(headerFile.errorString()));
        return;
    }
    headerFile.write(block);

    block.clear();

    if (field("comment").toBool()) {
        block += "/*\n";
        block += "    " + implementation.toLatin1() + '\n';
        block += "*/\n";
        block += '\n';
    }
    block += "#include \"" + header.toLatin1() + "\"\n";
    block += '\n';

    if (field("qobjectCtor").toBool()) {
        block += className + "::" + className + "(QObject *parent)\n";
        block += "    : " + baseClass + "(parent)\n";
        block += "{\n";
        block += "}\n";
    } else if (field("qwidgetCtor").toBool()) {
        block += className + "::" + className + "(QWidget *parent)\n";
        block += "    : " + baseClass + "(parent)\n";
        block += "{\n";
        block += "}\n";
    } else if (field("defaultCtor").toBool()) {
        block += className + "::" + className + "()\n";
        block += "{\n";
        block += "    // missing code\n";
        block += "}\n";

        if (field("copyCtor").toBool()) {
            block += "\n";
            block += className + "::" + className + "(const " + className
                     + " &other)\n";
            block += "{\n";
            block += "    *this = other;\n";
            block += "}\n";
            block += '\n';
            block += className + " &" + className + "::operator=(const "
                     + className + " &other)\n";
            block += "{\n";
            if (!baseClass.isEmpty())
                block += "    " + baseClass + "::operator=(other);\n";
            block += "    // missing code\n";
            block += "    return *this;\n";
            block += "}\n";
        }
    }

    QFile implementationFile(outputDir + '/' + implementation);
    if (!implementationFile.open(QFile::WriteOnly | QFile::Text)) {
        QMessageBox::warning(0, QObject::tr("Simple Wizard"),
                             QObject::tr("Cannot write file %1:\n%2")
                             .arg(implementationFile.fileName())
                             .arg(implementationFile.errorString()));
        return;
    }
    implementationFile.write(block);

    QDialog::accept();
}

IntroPage::IntroPage(QWidget *parent)
    : QWizardPage(parent)
{
    setTitle(tr("Introduction"));
    setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark1.png"));

    label = new QLabel(tr("This wizard will generate a skeleton C++ class "
                          "definition, including a few functions. You simply "
                          "need to specify the class name and set a few "
                          "options to produce a header file and an "
                          "implementation file for your new C++ class."));
    label->setWordWrap(true);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(label);
    setLayout(layout);
}

ClassInfoPage::ClassInfoPage(QWidget *parent)
    : QWizardPage(parent)
{
    setTitle(tr("Class Information"));
    setSubTitle(tr("Specify basic information about the class for which you "
                   "want to generate skeleton source code files."));
    setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo1.png"));

    classNameLabel = new QLabel(tr("&Class name:"));
    classNameLineEdit = new QLineEdit;
    classNameLabel->setBuddy(classNameLineEdit);

    baseClassLabel = new QLabel(tr("B&ase class:"));
    baseClassLineEdit = new QLineEdit;
    baseClassLabel->setBuddy(baseClassLineEdit);

    qobjectMacroCheckBox = new QCheckBox(tr("Generate Q_OBJECT ¯o"));

    groupBox = new QGroupBox(tr("C&onstructor"));

    qobjectCtorRadioButton = new QRadioButton(tr("&QObject-style constructor"));
    qwidgetCtorRadioButton = new QRadioButton(tr("Q&Widget-style constructor"));
    defaultCtorRadioButton = new QRadioButton(tr("&Default constructor"));
    copyCtorCheckBox = new QCheckBox(tr("&Generate copy constructor and "
                                        "operator="));

    defaultCtorRadioButton->setChecked(true);

    connect(defaultCtorRadioButton, &QAbstractButton::toggled,
            copyCtorCheckBox, &QWidget::setEnabled);

    registerField("className*", classNameLineEdit);
    registerField("baseClass", baseClassLineEdit);
    registerField("qobjectMacro", qobjectMacroCheckBox);

    registerField("qobjectCtor", qobjectCtorRadioButton);
    registerField("qwidgetCtor", qwidgetCtorRadioButton);
    registerField("defaultCtor", defaultCtorRadioButton);
    registerField("copyCtor", copyCtorCheckBox);

    QVBoxLayout *groupBoxLayout = new QVBoxLayout;

    groupBoxLayout->addWidget(qobjectCtorRadioButton);
    groupBoxLayout->addWidget(qwidgetCtorRadioButton);
    groupBoxLayout->addWidget(defaultCtorRadioButton);
    groupBoxLayout->addWidget(copyCtorCheckBox);
    groupBox->setLayout(groupBoxLayout);

    QGridLayout *layout = new QGridLayout;
    layout->addWidget(classNameLabel, 0, 0);
    layout->addWidget(classNameLineEdit, 0, 1);
    layout->addWidget(baseClassLabel, 1, 0);
    layout->addWidget(baseClassLineEdit, 1, 1);
    layout->addWidget(qobjectMacroCheckBox, 2, 0, 1, 2);
    layout->addWidget(groupBox, 3, 0, 1, 2);
    setLayout(layout);
}

CodeStylePage::CodeStylePage(QWidget *parent)
    : QWizardPage(parent)
{
    setTitle(tr("Code Style Options"));
    setSubTitle(tr("Choose the formatting of the generated code."));
    setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo2.png"));

    commentCheckBox = new QCheckBox(tr("&Start generated files with a "

                                       "comment"));
    commentCheckBox->setChecked(true);

    protectCheckBox = new QCheckBox(tr("&Protect header file against multiple "
                                       "inclusions"));
    protectCheckBox->setChecked(true);

    macroNameLabel = new QLabel(tr("&Macro name:"));
    macroNameLineEdit = new QLineEdit;
    macroNameLabel->setBuddy(macroNameLineEdit);

    includeBaseCheckBox = new QCheckBox(tr("&Include base class definition"));
    baseIncludeLabel = new QLabel(tr("Base class include:"));
    baseIncludeLineEdit = new QLineEdit;
    baseIncludeLabel->setBuddy(baseIncludeLineEdit);

    connect(protectCheckBox, &QAbstractButton::toggled,
            macroNameLabel, &QWidget::setEnabled);
    connect(protectCheckBox, &QAbstractButton::toggled,
            macroNameLineEdit, &QWidget::setEnabled);
    connect(includeBaseCheckBox, &QAbstractButton::toggled,
            baseIncludeLabel, &QWidget::setEnabled);
    connect(includeBaseCheckBox, &QAbstractButton::toggled,
            baseIncludeLineEdit, &QWidget::setEnabled);

    registerField("comment", commentCheckBox);
    registerField("protect", protectCheckBox);
    registerField("macroName", macroNameLineEdit);
    registerField("includeBase", includeBaseCheckBox);
    registerField("baseInclude", baseIncludeLineEdit);

    QGridLayout *layout = new QGridLayout;
    layout->setColumnMinimumWidth(0, 20);
    layout->addWidget(commentCheckBox, 0, 0, 1, 3);
    layout->addWidget(protectCheckBox, 1, 0, 1, 3);
    layout->addWidget(macroNameLabel, 2, 1);
    layout->addWidget(macroNameLineEdit, 2, 2);
    layout->addWidget(includeBaseCheckBox, 3, 0, 1, 3);
    layout->addWidget(baseIncludeLabel, 4, 1);
    layout->addWidget(baseIncludeLineEdit, 4, 2);

    setLayout(layout);
}

void CodeStylePage::initializePage()
{
    QString className = field("className").toString();
    macroNameLineEdit->setText(className.toUpper() + "_H");

    QString baseClass = field("baseClass").toString();

    includeBaseCheckBox->setChecked(!baseClass.isEmpty());
    includeBaseCheckBox->setEnabled(!baseClass.isEmpty());
    baseIncludeLabel->setEnabled(!baseClass.isEmpty());
    baseIncludeLineEdit->setEnabled(!baseClass.isEmpty());

    QRegularExpression rx("Q[A-Z].*");
    if (baseClass.isEmpty()) {
        baseIncludeLineEdit->clear();
    } else if (rx.match(baseClass).hasMatch()) {
        baseIncludeLineEdit->setText('<' + baseClass + '>');
    } else {
        baseIncludeLineEdit->setText('"' + baseClass.toLower() + ".h\"");
    }
}

OutputFilesPage::OutputFilesPage(QWidget *parent)
    : QWizardPage(parent)
{
    setTitle(tr("Output Files"));
    setSubTitle(tr("Specify where you want the wizard to put the generated "
                   "skeleton code."));
    setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo3.png"));

    outputDirLabel = new QLabel(tr("&Output directory:"));
    outputDirLineEdit = new QLineEdit;
    outputDirLabel->setBuddy(outputDirLineEdit);

    headerLabel = new QLabel(tr("&Header file name:"));
    headerLineEdit = new QLineEdit;
    headerLabel->setBuddy(headerLineEdit);

    implementationLabel = new QLabel(tr("&Implementation file name:"));
    implementationLineEdit = new QLineEdit;
    implementationLabel->setBuddy(implementationLineEdit);

    registerField("outputDir*", outputDirLineEdit);
    registerField("header*", headerLineEdit);
    registerField("implementation*", implementationLineEdit);

    QGridLayout *layout = new QGridLayout;
    layout->addWidget(outputDirLabel, 0, 0);
    layout->addWidget(outputDirLineEdit, 0, 1);
    layout->addWidget(headerLabel, 1, 0);
    layout->addWidget(headerLineEdit, 1, 1);
    layout->addWidget(implementationLabel, 2, 0);
    layout->addWidget(implementationLineEdit, 2, 1);
    setLayout(layout);
}

void OutputFilesPage::initializePage()
{
    QString className = field("className").toString();
    headerLineEdit->setText(className.toLower() + ".h");
    implementationLineEdit->setText(className.toLower() + ".cpp");
    outputDirLineEdit->setText(QDir::toNativeSeparators(QDir::tempPath()));
}

ConclusionPage::ConclusionPage(QWidget *parent)
    : QWizardPage(parent)
{
    setTitle(tr("Conclusion"));
    setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark2.png"));

    label = new QLabel;
    label->setWordWrap(true);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(label);
    setLayout(layout);
}

void ConclusionPage::initializePage()
{
    QString finishText = wizard()->buttonText(QWizard::FinishButton);
    finishText.remove('&');
    label->setText(tr("Click %1 to generate the class skeleton.")
     

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    .main

    #include 
#include 
#include 
#include 

#include "classwizard.h"

int main(int argc, char *argv[])
{
    Q_INIT_RESOURCE(classwizard);

    QApplication app(argc, argv);

#ifndef QT_NO_TRANSLATION
    QString translatorFileName = QLatin1String("qt_");
    translatorFileName += QLocale::system().name();
    QTranslator *translator = new QTranslator(&app);
    if (translator->load(translatorFileName, QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
        app.installTranslator(translator);
#endif

    ClassWizard wizard;
    wizard.show();
    return app.exec();
}

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  • 原文地址：https://blog.csdn.net/MrHHHHHH/article/details/134401093