Qt创建RadioButton

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int main(int argc, char *argv[])

{

QApplication app(argc, argv);

QButtonGroup *bg1 = new QButtonGroup(&app);

QButtonGroup *bg2 = new QButtonGroup(&app);

QRadioButton *rb1 = new QRadioButton("R1");

QRadioButton *rb2 = new QRadioButton("R2");

QRadioButton *rb3 = new QRadioButton("R3");

QRadioButton *rb4 = new QRadioButton("R4");

bg1->addButton(rb1);

bg1->addButton(rb2);

bg2->addButton(rb3);

bg2->addButton(rb4);

QGroupBox *gb = new QGroupBox("Radio Buttons");

QGridLayout *layout = new QGridLayout();

layout->addWidget(rb1, 0, 0, 1, 1);

layout->addWidget(rb2, 1, 0, 1, 1);

layout->addWidget(rb3, 0, 1, 1, 1);

layout->addWidget(rb4, 1, 1, 1, 1);

gb->setLayout(layout);

QWidget *widget = new QWidget();

QVBoxLayout *mainLayout = new QVBoxLayout();

mainLayout->addWidget(gb);

widget->setLayout(mainLayout);

widget->layout()->setSizeConstraint(QLayout::SetFixedSize);

widget->show();

// gb->show();

return app.exec();

}

QRadioButton要放在QButtonGroup中, Java中的JRadioButton要放在ButtonGroup中.

把QRadioButtons放在一个QGroupBox里, Java中即设置边框为TitledBorder.这样做是为了看起来清楚.

QButtonGroup和ButtonGroup并不是容器, 只是一个逻辑上用来管理属于一组的RadioButtons只有一个能被选中.