Scroll area is smaller than dialog

[gabor53]

Hi,
I have the following scroll area:

QScrollArea *scroll = new QScrollArea(this);
    scroll->setVerticalScrollBarPolicy (Qt::ScrollBarAlwaysOn);
    scroll->setHorizontalScrollBarPolicy (Qt::ScrollBarAlwaysOn);
    
    QWidget *viewport  = new QWidget(this);
    scroll->setWidget (viewport);
    scroll->setWidgetResizable (true);


    QFormLayout *layout = new QFormLayout(viewport);
    viewport->setLayout (layout);
    layout->setSpacing (60);



// Title Row setup
    QHBoxLayout *titleRow = new QHBoxLayout(viewport);
    titleRow->addWidget (Title);

//Creating the Name row

    QHBoxLayout *NameRow = new QHBoxLayout(viewport);

                NameRow->addWidget (Label_Name);
                NameRow->addWidget (LineEdit_Name);
                NameRow->addSpacing (10);
                NameRow->addWidget (angry_image_Label);
                NameRow->addSpacing (10);
                NameRow->addWidget (incorrect_Label);
        		NameRow->addSpacing (350);

// Interspace

    layout->setVerticalSpacing (30);

    QLabel *spacer_Label = new QLabel;

// Displaying the rows

    layout->addRow(titleRow);
    layout->addRow (spacer_Label,spacer_Label);
    layout->addRow (Label_ID,ID_Display);
    layout->addRow (NameRow);
}

It produces the following dialog:
Image
Please help me to find out why the scrolling area is smaller than the dialog.
Thank you.

[Ni.Sumi]

Hi @gabor53

Set Grid-layout in the Dialog. Make Gridlayout inside the Dialog for the Scrollarea.Roughly the design of widgets looks like this.

Dialog ( gridlyout ( Scrollarea( layout( yourwidget's)))) .

Add this..
QGridLayout *sam = new QGridLayout;
sam->addWidget(your scrollarea );
Dialogname->setlayout(sam)

[gabor53]

Thank you. It worked well.

[Ni.Sumi]

Hi @gabor53

Okay. Please set it as solved . :)

[gabor53]

Just an other related question: Do I need to worry about this message:

"QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout"?
Thank you.

[Ni.Sumi]

Hi @gabor53 ,

Till it works fine..no problem :)

Yes that warning is from the HLaoyuts in the viewport. Why you have need 2 HLayouts in the viewport? You can add "title row widget" in the "NameRow" QHBoxLayout. Or use QGridLaoyut with stretching.

[gabor53]

Thank you.