Layout, widgets not inside ???

[JoeCFD]

@SPlatten said in Layout, widgets not inside ???:

Which clearly creates a new widget and positions it between QGroupBox and QVBoxLayout.

What is for? The gaps between verticalLayoutWidget and groupBox can be handled with verticalLayout->setContentsMargins(11, 11, 11, 11); verticalLayoutWidget is not needed. Check the example in my link.

[SPlatten]

@JoeCFD , I think you misunderstand what I am saying. I used Qt Creator to build this example, I did the following:

• Dragged Group Box from Containers palette and dropped onto centralWidget
• Dragged Vertical Layout from Layouts palette and dropped onto Group Box
• Dragged Radio Button from Buttons palette and dropped onto Vertical Layout
• Dragged Radio Button from Buttons palette and dropped onto Vertical Layout
• Dragged Radio Button from Buttons palette and dropped onto Vertical Layout
• Edited text attribute for each control

I did not do anything to add the mysterious verticalLayoutWidget which was added by Qt Creator. I am saying this works and its only because Qt Creator is doing something else instead of adding a QGroupBox, QVBoxLayout and child widgets.

[JoeCFD]

@SPlatten Nothing wrong with it. In your case, I think you do not need it. It is better to understand how this works. I did the same thing in my link with designer which does not have verticalLayoutWidget.

        groupBox = new QGroupBox(centralwidget);
        groupBox->setObjectName(QString::fromUtf8("groupBox"));
        verticalLayout = new QVBoxLayout(groupBox);
        verticalLayout->setObjectName(QString::fromUtf8("verticalLayout"));
        radioButton = new QRadioButton(groupBox);
        radioButton->setObjectName(QString::fromUtf8("radioButton"));

        verticalLayout->addWidget(radioButton);

        radioButton_2 = new QRadioButton(groupBox);
        radioButton_2->setObjectName(QString::fromUtf8("radioButton_2"));

        verticalLayout->addWidget(radioButton_2);

        radioButton_3 = new QRadioButton(groupBox);
        radioButton_3->setObjectName(QString::fromUtf8("radioButton_3"));

        verticalLayout->addWidget(radioButton_3);

[SPlatten]

@JoeCFD , difference I can see is you set the parent for the radio buttons to group box, if this is correct then this is where I'm going wrong, because I'm setting the parent to the layout.

[JoeCFD]

@SPlatten If verticalLayoutWidget does not exist, groupBox is a natural choice. You can set their parents to be central widget as well. It is layouts which hold and organize widgets. Children are cleared when their parents are destroyed.

Sometimes, I need to move a widget to another place in my app. What I do is to remove its parent first and add a new parent. Then add it to the layout of the new parent.

An overlaid widget is made within its parent widget without being placed in any layout. Sure an overlaid widget can have a layout. In your case, verticalLayoutWidget is an overlaid widget since it is not in any layout.

[SPlatten]

@JoeCFD Well I've tried setting the parent to the groupbox, still the same, not right.

[JoeCFD]

@SPlatten said in Layout, widgets not inside ???:

verticalLayoutWidget->setGeometry(QRect(9, 29, 291, 161))

your verticalLayoutWidget height is 161 and vertical margins of the layout are 11 * 2; The layout height for your radio buttons is 161 - 23 = 138 px. What is the height of your single radio button?

what is the central widget width and height?
groupBox->setGeometry(QRect(120, 170, 301, 201));
its width has at least 120 + 301 px.

[SPlatten]

@JoeCFD, I thought the widget containing the layout and other widgets would auto size ?

[JKSH]

@SPlatten Here's my suggestion:

1. Copy the working code from Qt Designer into a small test project. Build it and run it -- make sure the resulting GUI looks correct.
2. Gradually modify the working code to become more and more like your own custom code. Rebuild and re-run it after each small modification -- make sure the resulting GUI still looks correct at each step.
3. As soon as the GUI stops looking correct, investigate your latest modifications.

That will help you pinpoint exactly what's causing the GUI to look "not right".

[SPlatten]

@JKSH , thank you, I will certainly give it a go.

[JoeCFD]

@SPlatten in designer after you finish your layout, click form (between edit and view)->preview in->fusion style
to preview your layout. Then resize the display of main window or dialog or widget to see if they resize properly. If not, change your layout.

[SPlatten]

@JoeCFD , No offence, I'm not sure you are reading or understanding what I'm trying to do. I have the everything in an XML file, when I read in the XML my code translates the XML at run-time into a GUI, I'm not using Qt Creator / Designer at all except for testing and feasibility testing.

There is some odd behaviour in what I'm trying to do and what Qt Creator does that as far as I can see isn't documented and seems to be additional glue.

[SPlatten]

@JKSH , I will try what you suggest, single stepping through my existing code this is what is done, using this XML:

<groupbox id="enSEX" eol="true" align="left" layout="vertical" title="Radios"
		  dbfield="vcSex" properties="QGroupBox { border-radius: 8px; background-color:#ff0000; }">
	<radiobutton id="rdoM" text="Male" default="true" position="0,0"/>
	<radiobutton id="rdoF" text="Female" position="1,0"/>
</groupbox>

A node is created with a widget which I name with setObjectName to groupbox, id: enSEX, this node has a layout attribute so a layout QVBoxLayout is created:

...
            } else if ( strLayout.compare(clsXMLnode::mscszLayoutVertical) == 0 ) {
                mpobjLayout = new QVBoxLayout(mpobjWidget);
                strName = "QVBoxLayout";
            }
            if ( strName.isEmpty() != true ) {
                mpobjLayout->setObjectName(strName + QString(", id: %1")
                                .arg(strGetAttribute(clsXMLnode::mscszAttrID)));
            }

The first radio button is created as a child of QGroupBox, it has the object name radiobutton, id: rdoM, so far the debugger shows:

Then I carry on to the next radio button which has the object name radiobutton, id: rdoF, the result in the debugger doesn't look correct anymore and now shows:

Where has radiobutton, id: rdoM gone and the output is still wrong:

The radio buttons work correctly, the layout has the title and correct style but why or why do the radio buttons appear outside of the layout?

[JonB]

@SPlatten
I am just jumping in here. I have not read & digested all previous posts here, and I don't intend to, but just a comment.

Will take a good look, because the verticalLayoutWidget looks like its added by Qt Creator and is obviously required, and thats something thats missing in my code.

I did not do anything to add the mysterious verticalLayoutWidget which was added by Qt Creator. I am saying this works and its only because Qt Creator is doing something else instead of adding a QGroupBox, QVBoxLayout and child widgets.

I do not think you should have any such "verticalLayoutWidget" widget.

Dragged Vertical Layout from Layouts palette and dropped onto Group Box

This is not the right thing to do. The correct actions in Designer should be:

1. Drag QGroupBox onto canvas.
2. Next drag one QRadioButton onto the QGroupBox widget.
3. Now --- and only after step #2 can this be done --- right click on the QGroupBox. From the bottom item which reads Lay out pick Lay Out Vertically.

This is the (irritating) way Designer requires you to place a layout on a widget (took me ages to appreciate this when I first started using Designer). It does not allow you to do so till after the container has had at least one child widget added. This creates a different structure from your "Dragged Vertical Layout from Layouts palette", which you should not do. (Indeed, if you do your way in Designer and look you will see the group box has a "no entry" sign indicating this is incorrect, it is missing its own layout.)

To address whatever your issue is. By now you have spent a large amount of time asking about your existing, complex code. Instead take the example from https://doc.qt.io/qt-5/qgroupbox.html#details. Get rid of all your code. Does that draw your widgets/group box/layout correctly? Assuming it does, build back from there to your real code, or down from your code to the working code. (For example, get rid of all your parsing code, just test as you incrementally add hard-coded group boxes, layouts and radiobuttons to mirror what you would like to be doing when it's actually reading your XML file.)

[SPlatten]

@JonB , thank you, I will read, digest and git it a go.

[SPlatten]

@JonB , I can get it to work easy enough in Qt Creator, but for some reason unknown to me, trying to replicate the same in code doesn't do the same.

1. I create a QGroupBox
2. I add two instances of QRadioButton to the QGroupBox by setting the QGroupBox as the parent of the QRadioButton's.
3. There is no option to select a layout in code so I set the layout using setLayout passing an instance of QVBoxLayout.

Doing this just ends up with the exact same results, the QGroupBox appears above the radio buttons and the Radio buttons are not inside the QGroupBox. I change the layout to QHBoxLayout no difference in appearance, the radio buttons still appear above each other and outside the QGroupBox.

[SGaist]

In code:

• create QGroupBox
• create buttons (no need for parent)
• create layout (without any parent !)
• add buttons to layout
• set layout on QGroupBox

Other possibility:

• create QGroupBox
• create layout (without any parent !)
• set layout on QGroupBox
• create buttons (no need for parent)
• add buttons to layout

Yet another possibility:

• create QGroupBox
• create layout with QGroupBox object as parent
• create buttons (no need for parent)
• add buttons to layout

[SPlatten]

@SGaist , thank you, will try this now.

[JonB]

@SPlatten said in Layout, widgets not inside ???:

I create a QGroupBox
I add two instances of QRadioButton to the QGroupBox by setting the QGroupBox as the parent of the QRadioButton's.
There is no option to select a layout in code so I set the layout using setLayout passing an instance of QVBoxLayout.

I referred you to copy from https://doc.qt.io/qt-5/qgroupbox.html#details, all you have to do is copy the code example there. Obviously you have to add buttons onto the layout with QVBoxLayout::addWidget();, else you're not putting them on a layout. Yet you do not mention that in your steps.....??

[SPlatten]

@JonB , I have tried adding the widgets to the layout and also tried using the layout as the parent for the widgets, neither have worked.