Adding children to a QWidget, but not showing...

[SPlatten]

I have a Window that I am creating programmatically, this bit works fine the window is rendered with Close, Minimise and Maximise widgets. I'm trying to add additional widgets programmatically to the window in the display area. I can see that after creating and adding the new widgets by calling:

QObjectList objList = pobjWidget->children();

The objList length is incrementing. I've added four instances of QLabel to the Window, however for some reason that are not showing. Here is the styles I have applied to each label:

    static const char scszLabelProperties[] = 
                        "QLabel { text-align:left;"
                                 "vertical-align: text-top;"
                                 "border:0px;"
                                 "color:#000000;"
                                 "format:rich;"
                                 "text-decoration:none; }";

When the label is created a pointer to the parent Widget / Window is passed QLabel constructor. Can anyone suggest what might be wrong?

I can post more source code if required, just let me know what?

[SGaist]

Hi,

Just passing a parent to a widget created at run time won't make it visible. You have to explicitly call show on it.

[JonB]

@SPlatten
Start by removing any stylesheet. Is this a stylesheet or a widget adding issue? If it's the adding, don't complicate by introducing/mentioning stylesheet

[SGaist]

Hi,

Just passing a parent to a widget created at run time won't make it visible. You have to explicitly call show on it.

[SPlatten]

@JonB , I started off with no stylesheet at all, thats why I added the style sheet.

@SGaist , I also have the code:

                if ( objList.length() == 0 ) {
    //No children
                    ptOffsets.setX(0);
                    ptOffsets.setY(0);
                } else {
    //Set offset to last child
                    QWidget* pobjLastWidget = static_cast<QWidget*>(objList[objList.length() - 1]);
                    ptOffsets = pobjLastWidget->geometry().bottomLeft();
                }
    //Get existing node geometry
                QRect rctGeom = pobjNode->rctGetGeometry();
    //Offset into poisition
                rctGeom.setTopLeft(ptOffsets);
                pobjNode->setGeometry(rctGeom);
                pobjNode->setVisible(true);

Where pobjNode is a generic class that is used for all the widget types and each of the methods being called effect the widget, for example:

void clsXMLnode::setGeometry(QRect& rrctGeom) {
    bool blnValid;

    if ( (blnValid = rrctGeom.isValid()) == true ) {
//If there is a widget associated with this node set it's geometry
        if ( mpobjWidget != nullptr ) {
            mrctGeom = rrctGeom;
            mblnPendingGeom = false;
            mpobjWidget->setGeometry(mrctGeom);
        } else {
            blnValid = false;
        }
    }
    if ( blnValid != true ) {
        mblnPendingGeom = true;
        mrctPending = rrctGeom;
    }
}
@SGaist , however, I just added:

            QWidget* pobjChild = pobjNode->pobjGetWidget();
            pobjChild->update();
            pobjChild->show();

And now they are showing, so I have a bug in my helper class which I will investigate, thank you.