QCheckBox（复选框）

#include <QApplication> #include <QWidget> #include <QCheckBox> #include <QVBoxLayout> #include <QDebug> class MyWidget : public QWidget { Q_OBJECT public: MyWidget(QWidget *parent = nullptr) : QWidget(parent) { QVBoxLayout *layout = new QVBoxLayout(this); QCheckBox *checkBox = new QCheckBox("Enable Option", this); connect(checkBox, SIGNAL(stateChanged(int)), this, SLOT(onCheckBoxStateChanged(int))); layout->addWidget(checkBox); setLayout(layout); } private slots: void onCheckBoxStateChanged(int state) { if (state == Qt::Checked) { qDebug() << "Option Enabled"; } else { qDebug() << "Option Disabled"; } } }; int main(int argc, char *argv[]) { QApplication app(argc, argv); MyWidget widget; widget.setWindowTitle("QCheckBox Example"); widget.show(); return app.exec(); } #include "main.moc"