我正在寻找类似以下的事情:
例子
但是使用单选按钮而不是复选框。在上面的图片中,小部件被放置在可以启用/禁用的组中,但我希望一次只启用 1 个组(在示例中,A 组和 C 组都被启用)。
我使用QGroupBox做了上面的例子,但据我所知,它只提供普通的复选框,而不是单选按钮。
中出现的复选框QGroupBox
不是a QCheckBox
,它只是一个绘图。所以一个可能的解决方案是创建一个管理QGroupBox
检查的类。
#include <QApplication>
#include <QGroupBox>
#include <QLineEdit>
#include <QRadioButton>
#include <QSlider>
#include <QVBoxLayout>
class ExclusiveManager: public QObject{
public:
using QObject::QObject;
void addGroupBox(QGroupBox *groupbox){
if(groupbox){
groupbox->blockSignals(true);
groupbox->setChecked(m_groupboxs.isEmpty());
groupbox->blockSignals(false);
m_groupboxs << groupbox;
connect(groupbox, &QGroupBox::toggled, this, &ExclusiveManager::onToggled);
}
}
private slots:
void onToggled(bool on){
QGroupBox *groupbox = qobject_cast<QGroupBox *>(sender());
if(on){
for(QGroupBox *g: m_groupboxs){
if(g != groupbox && g->isChecked()){
g->blockSignals(true);
g->setChecked(false);
g->blockSignals(false);
}
}
}
else{
groupbox->blockSignals(true);
groupbox->setChecked(false);
groupbox->blockSignals(false);
}
}
private:
QList<QGroupBox *> m_groupboxs;
};
class Widget: public QWidget{
public:
Widget(QWidget *parent=nullptr):QWidget(parent){
setLayout(new QVBoxLayout);
ExclusiveManager *manager = new ExclusiveManager(this);
group_a = new QGroupBox("Group A");
group_a->setCheckable(true);
group_b = new QGroupBox("Group B");
group_b->setCheckable(true);
group_c = new QGroupBox("Group C");
group_c->setCheckable(true);
layout()->addWidget(group_a);
layout()->addWidget(group_b);
layout()->addWidget(group_c);
manager->addGroupBox(group_a);
manager->addGroupBox(group_b);
manager->addGroupBox(group_c);
QVBoxLayout *layA = new QVBoxLayout();
layA->addWidget(new QLineEdit);
group_a->setLayout(layA);
QVBoxLayout *layB = new QVBoxLayout();
layB->addWidget(new QRadioButton("Option 1"));
layB->addWidget(new QRadioButton("Option 2"));
group_b->setLayout(layB);
QVBoxLayout *layC = new QVBoxLayout();
layC->addWidget(new QSlider(Qt::Horizontal));
group_c->setLayout(layC);
}
private:
QGroupBox *group_a;
QGroupBox *group_b;
QGroupBox *group_c;
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}