c++qtqt5qlabelqcheckbox

Align QCheckbox text and a QLabel underneath it


I have a checkbox with some text and I have a label underneath this checkbox. How can I align this label so it aligns with the text on the checkbox.

What I want:

[ ] insert_text
    some_text 

What I have:

[ ] insert_text
some_text

Solution

  • A possible solution is to add a padding to the left side of the QLabel of a suitable width, to calculate the width I have created a custom QCheckBox that returns the width of the indicator but to that amount you must add a couple of pixels that represent the space between the indicator and the text:

    #include <QtWidgets>
    
    class CheckBox: public QCheckBox{
    public:
        using QCheckBox::QCheckBox;
        int width_of_indicator(){
            QStyleOptionButton opt;
            initStyleOption(&opt);
            return  style()->subElementRect(QStyle::SE_CheckBoxIndicator, &opt,this).width();
        }
    };
    
    int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
        QWidget w;
        auto ch = new CheckBox("insert_text");
        auto label = new QLabel("some_text: Stack Overflow");
        label->setStyleSheet(QString("padding-left: %1px").arg(ch->width_of_indicator()+2));
        auto lay = new QVBoxLayout(&w);
        lay->addWidget(ch);
        lay->addWidget(label);
        w.show();
        return a.exec();
    }