Qt常用的按钮控件编程（三）- QRadioButton 按钮

#include "widget.h" #include <QDebug> Widget::Widget(QWidget *parent) : QWidget(parent) { /* 主窗体设置位置和显示的大小及背景颜色 */ this->setGeometry(0, 0, 800, 480); /*将主窗口背景色设置为天蓝色（不透明度为 100%）*/ this->setStyleSheet("Widget {background-color: rgba(135, 206, 235, 100%);}"); /* 实例化对象 */ createTristateCheckbox(); createMultiSelectCheckboxes(); layout1 = new QHBoxLayout; layout2 = new QHBoxLayout; layout = new QVBoxLayout; layout1->addWidget(label1); layout1->addWidget(tristateCheckbox); layout2->addWidget(label2); layout2->addWidget(multiSelectCheckbox1); layout2->addWidget(multiSelectCheckbox2); layout->addLayout(layout1); layout->addLayout(layout2); setLayout(layout); connectSignalsAndSlots(); setWindowTitle("_qcheckbox Example"); } Widget::~Widget() { } void Widget::createTristateCheckbox() { tristateCheckbox = new QCheckBox("三态复选框:半选中", this); tristateCheckbox->setTristate(true); tristateCheckbox->setCheckState(Qt::PartiallyChecked); tristateCheckbox->setTristate(true); label1 = new QLabel(this); label1->setText(" 第一组："); } void Widget::createMultiSelectCheckboxes() { multiSelectCheckbox1 = new QCheckBox("多选框1:选中", this); multiSelectCheckbox2 = new QCheckBox("多选框2:未选中", this); multiSelectCheckbox1->setCheckState(Qt::Checked); multiSelectCheckbox2->setCheckState(Qt::Unchecked); multiSelectButtonGroup = new QButtonGroup(this); multiSelectButtonGroup->addButton(multiSelectCheckbox1); multiSelectButtonGroup->addButton(multiSelectCheckbox2); multiSelectButtonGroup->setExclusive(false);//多选 // multiSelectCheckbox1->setChecked(true); // multiSelectCheckbox2->setChecked(false); label2 = new QLabel(this); label2->setText(" 第二组："); } void Widget::connectSignalsAndSlots() { connect(tristateCheckbox, SIGNAL(stateChanged(int)), this, SLOT(tristateCheckboxChanged(int))); // connect(multiSelectButtonGroup, SIGNAL(buttonToggled(int)), this, SLOT(multiSelectCheckboxChanged(int))); #ifdef QT_ARM_PLATFORM connect(multiSelectButtonGroup, SIGNAL(buttonClicked(int)), this, SLOT(onButtonClicked(int))); #else connect(multiSelectButtonGroup, SIGNAL(buttonToggled(int,bool)), this, SLOT(multiSelectCheckboxChanged(int,bool))); #endif } void Widget::tristateCheckboxChanged(int state) { qDebug() << "三态复选框状态：" << state; /* 判断checkBox的state状态，设置checkBox的文本 */ switch (state) { case Qt::Checked: /* 选中状态 */ tristateCheckbox->setText("三态复选框:选中"); break; case Qt::Unchecked: /* 未选中状态 */ tristateCheckbox->setText("三态复选框:未选中"); break; case Qt::PartiallyChecked: /* 半选状态 */ tristateCheckbox->setText("三态复选框:半选中"); break; default: break; } } void Widget::onButtonClicked(int id) { QCheckBox *checkbox = qobject_cast<QCheckBox *>(multiSelectButtonGroup->button(id)); int checked = checkbox->isChecked(); qDebug() << "多选框" << id + 1 << " 的状态是 " << checked; if(checkbox==multiSelectCheckbox1) { if (checked) { /* 选中状态 */ multiSelectCheckbox1->setText("多选框1:选中"); qDebug() << checkbox->text() << "is checked."; } else { multiSelectCheckbox1->setText("多选框1:未选中"); qDebug() << checkbox->text() << "is unchecked."; } } else { if (checked) { /* 选中状态 */ multiSelectCheckbox2->setText("多选框2:选中"); qDebug() << checkbox->text() << "is checked."; } else { multiSelectCheckbox2->setText("多选框2:未选中"); qDebug() << checkbox->text() << "is unchecked."; } } } void Widget::multiSelectCheckboxChanged(int id, bool checked) { QCheckBox *checkbox = qobject_cast<QCheckBox *>(multiSelectButtonGroup->button(id)); qDebug() << "多选框 " << id + 1 << " 的状态是 " << checked; if(checkbox==multiSelectCheckbox1) { if (checked) { /* 选中状态 */ multiSelectCheckbox1->setText("多选框1:选中"); qDebug() << checkbox->text() << "is checked."; } else { multiSelectCheckbox1->setText("多选框1:未选中"); qDebug() << checkbox->text() << "is unchecked."; } } else { if (checked) { /* 选中状态 */ multiSelectCheckbox2->setText("多选框2:选中"); qDebug() << checkbox->text() << "is checked."; } else { multiSelectCheckbox2->setText("多选框2:未选中"); qDebug() << checkbox->text() << "is unchecked."; } } }