QSvgWidget in QGridLayout

[SPlatten]

I want to use QSvgWidget in a QGridLayout, here is my code:

    QGridLayout* pgrdloStatus(new QGridLayout);
    if ( mplblStsIcon == nullptr )
    {
        mplblStsIcon = new QLabel();
    }  
    if ( mpsvgRxIcon == nullptr )
    {
        mpsvgRxIcon = new QSvgWidget(":/SVG_LED");
    }
    if ( mpsvgTxIcon == nullptr )
    {
        mpsvgTxIcon = new QSvgWidget(":/SVG_LED");
    }
    const QString cstrToolTip(QString(
            "   Hostname: %1\r\nMAC address: %2")
                    .arg(mstrHostname).arg(mstrMACaddress));
    mplblStsIcon->setToolTip(cstrToolTip);
    pgrdloStatus->addWidget(mplblStsIcon, 0, 0, 1, 2, Qt::AlignHCenter);
    pgrdloStatus->addWidget(mpsvgRxIcon, 1, 0, 1, 1, Qt::AlignLeft);
    pgrdloStatus->addWidget(mpsvgTxIcon, 1, 1, 1, 1, Qt::AlignRight);
    return pgrdloStatus;

This is a snippet from a function, I see the status icon at row 0 and column 0 which spans 2 columns this is fine, but I'm not seeing the SVG images.

I've add the SVG file to my resource file and have given it an alias of SVG_LED. If I double click the resource the SVG loads in Qt Creator, no problem.

[SPlatten]

@SPlatten , fixed:

QGridLayout* pgrdloStatus(new QGridLayout);
    if ( mplblStsIcon == nullptr )
    {
        mplblStsIcon = new QLabel();
    }  
    if ( mpsvgRxIcon == nullptr )
    {
        mpsvgRxIcon = new QSvgWidget(":/SVG_LED");
        mpsvgRxIcon->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
        mpsvgRxIcon->setFixedSize(TraineeMonitor::mscuintCommsIconWidth,
                                  TraineeMonitor::mscuintCommsIconHeight);
    }
    if ( mpsvgTxIcon == nullptr )
    {
        mpsvgTxIcon = new QSvgWidget(":/SVG_LED");
        mpsvgTxIcon->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
        mpsvgTxIcon->setFixedSize(TraineeMonitor::mscuintCommsIconWidth,
                                  TraineeMonitor::mscuintCommsIconHeight);
    }
    const QString cstrToolTip(QString(
            "   Hostname: %1\r\nMAC address: %2")
                    .arg(mstrHostname).arg(mstrMACaddress));
    mplblStsIcon->setToolTip(cstrToolTip);
    pgrdloStatus->addWidget(mplblStsIcon, 0, 0, 1, 2, Qt::AlignHCenter);
    pgrdloStatus->addWidget(mpsvgRxIcon, 1, 0, 1, 1, Qt::AlignLeft);
    pgrdloStatus->addWidget(mpsvgTxIcon, 1, 1, 1, 1, Qt::AlignRight);
    return pgrdloStatus;

Adding size policy fixes it, doh!