QGroupBox automatically sizing

[SPlatten]

I want a instance of QGroupBox to be large enough to display a number of QCheckBoxes, here is my code:

//Create alarms group box
    QString strAlarmsGrp(DataSets::scstrTranslateText(DataSets::mscszAlarms));
    QGroupBox* pgrpbxAlarms(new QGroupBox(strAlarmsGrp, this));
    QVBoxLayout* pvbxAlarms(new QVBoxLayout);
    //Query database for alarm configuration
    QSqlQuery alarms("SELECT vcAlarm AS tag, vcDescription AS setting FROM alarms");
    mlstAlarms.clear();
    int intAlarmsWidth = 0;
    while( alarms.next() )
    {
        QSqlRecord record(alarms.record());
        QJsonObject objAlarm;
        for( int f=0; f<record.count(); f++ )
        {
            QSqlField field(record.field(f));
            QString strName(field.name()), strValue(field.value().toString());
            objAlarm.insert(strName, QJsonValue(strValue));
        }
        if ( objAlarm.isEmpty() != true )
        {
            QString strAlarmText(objAlarm[DataSets::mscszSetting].toString()),
                    strTag(objAlarm[DataSets::mscszTag].toString()),
                    strText(DataSets::scstrTranslateText(strAlarmText));
            QCheckBox* pchkbxAlarm(new QCheckBox(strText, this));
            pchkbxAlarm->setEnabled(blnEnable);
            pchkbxAlarm->setProperty(DataSets::mscszTag, strTag);
            mlstAlarms.append(pchkbxAlarm);
            pvbxAlarms->addWidget(pchkbxAlarm);
            QSize szCheckbox(pchkbxAlarm->sizeHint());
            if ( szCheckbox.isValid() == true && szCheckbox.width() > intAlarmsWidth )
            {
                intAlarmsWidth = szCheckbox.width();
            }
        }
    }
    if ( intAlarmsWidth > 0 )
    {
    //Don't resize the alarms group box, default parameter is 0
        pvbxAlarms->addStretch();
        pgrpbxAlarms->setMaximumWidth(intAlarmsWidth);
    }
    pgrpbxAlarms->setLayout(pvbxAlarms);

The issue is that the group box isn't quite wide enough, the last couple of characters are missing. This could account for the checkbox itself, is there something additional I have to add for this?

[raven-worx]

@SPlatten
try

pgrpbxAlarms->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);

[SPlatten]

@raven-worx , thank you, just tried that adding:

//Create alarms group box
    QString strAlarmsGrp(DataSets::scstrTranslateText(DataSets::mscszAlarms));
    QGroupBox* pgrpbxAlarms(new QGroupBox(strAlarmsGrp, this));
    QVBoxLayout* pvbxAlarms(new QVBoxLayout);
    //Query database for alarm configuration
    QSqlQuery alarms("SELECT vcAlarm AS tag, vcDescription AS setting FROM alarms");
    mlstAlarms.clear();
    int intAlarmsWidth = 0;
    while( alarms.next() )
    {
        QSqlRecord record(alarms.record());
        QJsonObject objAlarm;
        for( int f=0; f<record.count(); f++ )
        {
            QSqlField field(record.field(f));
            QString strName(field.name()), strValue(field.value().toString());
            objAlarm.insert(strName, QJsonValue(strValue));
        }
        if ( objAlarm.isEmpty() != true )
        {
            QString strAlarmText(objAlarm[DataSets::mscszSetting].toString()),
                    strTag(objAlarm[DataSets::mscszTag].toString()),
                    strText(DataSets::scstrTranslateText(strAlarmText));
            QCheckBox* pchkbxAlarm(new QCheckBox(strText, this));
            pchkbxAlarm->setEnabled(blnEnable);
            pchkbxAlarm->setProperty(DataSets::mscszTag, strTag);
            mlstAlarms.append(pchkbxAlarm);
            pvbxAlarms->addWidget(pchkbxAlarm);
            QSize szCheckbox(pchkbxAlarm->sizeHint());
            if ( szCheckbox.isValid() == true && szCheckbox.width() > intAlarmsWidth )
            {
                intAlarmsWidth = szCheckbox.width();
            }
        }
    }
    pgrpbxAlarms->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    if ( intAlarmsWidth > 0 )
    {
    //Don't resize the alarms group box, default parameter is 0
        pvbxAlarms->addStretch();
        pgrpbxAlarms->setMaximumWidth(intAlarmsWidth);
    }
    pgrpbxAlarms->setLayout(pvbxAlarms);

Unfortunately there is no difference. Is there a way to get the checkbox indicator size?

[raven-worx]

@SPlatten said in QGroupBox automatically sizing:

Is there a way to get the checkbox indicator size?

only when you subclass QGroupBox, since initStyleOption() method is protected.

QStyleOptionGroupBox  opt;
this->initStyleOption(&opt);
QRect checkBoxRect = this->style()->subControlRect(QStyle::CC_GroupBox, &opt, QStyle::SC_GroupBoxCheckBox, this);

[SPlatten]

@raven-worx , I think I'll stick with my fiddle factor:

static const quint16 scuint16CheckBoxIndicatorWidth = 24;
intAlarmsWidth += scuint16CheckBoxIndicatorWidth;