QCheckBox, QRadioButton和QComboBox中的QWizard:信号/插槽和信号映射-所需信息

Question

我正在尝试创建一个QWizard。我需要在第一个窗口中使用QRadioButton和QComboBox的组合，在第二个窗口中使用QCheckBox和QComboBox。

在第一个窗口中，每个RadioButton的文本信息来自指定路径中的目录，而ComboBox列表是RadioButton目录中目录的迭代。

在第二个窗口中，过程与上面相同，不是单选按钮，而是来自另一个目录路径的复选框。

单选按钮和组合框与信号和插槽相互依赖，如果选中了一个单选按钮，则必须激活其对应的组合框，如果选择了下一个单选按钮，则必须禁用第一个单选按钮。但这并没有发生，组合框列表每次都在增加，当我检查它时，相应的组合框也没有禁用。

下面是我的代码:

    void SelectOption::initializeUi()
{
    this->setWindowTitle("Window-1");
    QGridLayout *gridLayout1 = new QGridLayout();
    gridLayout1->setMargin(5);
    gridLayout1->setSpacing(5);
    QSignalMapper* signalMapper = new QSignalMapper();
    for(int i = 0; i < list.size(); i++){
        radioButton[i] = new QRadioButton();
        radioButton[i]->setText(softwareList[i]);
        signalMapper->setMapping(radioButton[i], i);
        gridLayout1->addWidget(radioButton[i], i/1, i%1);
        connect(radioButton[i], SIGNAL(clicked()),signalMapper, SLOT(map()));
    }
connect(signalMapper, SIGNAL(mapped(const int &)),this, SIGNAL(radioChecked(const int &)));
connect(this, SIGNAL(radioChecked(const int &)),this, SLOT(test(const int)));
    QGridLayout *gridLayout2 = new QGridLayout();
    gridLayout2->setMargin(5);
    gridLayout2->setSpacing(5);
    for(int j = 0; j < list.size(); j++){
        comboBox[j] = new QComboBox();
        comboBox[j]->setDisabled(true);
        gridLayout2->addWidget(comboBox[j], j/1, j%1);
    }
    QPushButton *nextButton = new QPushButton("Next >");
    nextButton->setDefault(true);
    connect(nextButton, SIGNAL(clicked()), this, SLOT(showMainPage()));
    QPushButton *backButton = new QPushButton("< Back");
    backButton->setDefault(true);
    connect(backButton, SIGNAL(clicked()), this, SLOT(showSelectOS()));
    QPushButton *cancelButton = new QPushButton("Cancel");
    cancelButton->setDefault(true);
    connect(cancelButton, SIGNAL(clicked()), this, SLOT(cancel()));
    QHBoxLayout *hboxlayout;
    hboxlayout = new QHBoxLayout();
    hboxlayout->addLayout(gridLayout1);
    hboxlayout->addLayout(gridLayout2);
    QHBoxLayout *layout;
    layout = new QHBoxLayout();
    layout->addStretch(10);
    layout->addWidget(nextButton);
    layout->addWidget(backButton);
    layout->addWidget(cancelButton);
    layout->addStretch(10);
    QVBoxLayout *mainLayout;
    mainLayout = new QVBoxLayout();
    mainLayout->addLayout(hboxlayout);
    mainLayout->addLayout(layout);
    ui->centralwidget->setLayout(mainLayout);
}
void SelectOption::test(const int id) // REMEMBER
{
    if(radioButton[id]->isChecked()){
        comboBox[id]->setEnabled(true);
        comboBox[id]->addItem(" Select anyone ");
        QString path = qApp->applicationDirPath() + "/list/" + radioButton[id]->text();
        QDir dir;
        dir.cd(path);
        dir.setFilter(QDir::Dirs | QDir::NoDotAndDotDot);
        QFileInfoList list = dir.entryInfoList();
        for (int i = 0; i < list.size(); ++i) {
            QFileInfo fileInfo = list.at(i);
            comboBox[id]->addItem(fileInfo.fileName());
        }
    }else{
        comboBox[id]->clear();
        comboBox[id]->setDisabled(true);
    }
}

Answer 1

将所有单选按钮添加到一个QButtonGroup。然后选中其中一个将取消选中其他所有。

更新(代码示例)。

使用QButtonGroup绝对没有什么困难。你所需要做的就是用void QButtonGroup::addButton ( QAbstractButton * button )方法添加QAbstractButton继承器，其他的都将自动完成。下面是一个简单的代码示例，在它的构造函数中向主窗口添加三个单选按钮:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent)
{
    setupUi(this);
    QVBoxLayout *layout = new QVBoxLayout(QMainWindow::centralWidget());
    QRadioButton *r1 = new QRadioButton("r1", this);
    QRadioButton *r2 = new QRadioButton("r2", this);
    QRadioButton *r3 = new QRadioButton("r3", this);
    layout->addWidget(r1);
    layout->addWidget(r2);
    layout->addWidget(r3);
    layout->addStretch();
    QButtonGroup *group = new QButtonGroup(this);
    group->addButton(r1);
    group->addButton(r2);
    group->addButton(r3);
    r1->setChecked(true);
}