First item in gridlayout is in the middle of the Dialog

gabor53

Hi,
The following code puts the Title label in the middle of the age:

    QLabel  *Title	= new QLabel;
    QFont f("Arial", 18, QFont::Bold);
    Title->setFont (f);
    Title->setAlignment (Qt::AlignCenter);
    Title->setText ("ADDING A FRIEND TO THE DATABASE");
    //Title->setFixedWidth (800);

	// Creating the 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);

    // Adding layout

    QGridLayout *grid = new QGridLayout;
    grid->addWidget (scroll);
    Additem::setLayout (grid);

	grid->addWidget (Title,0,0,0,4);

How can I move it to the top of the page (or to the top left corner)?
Thank you.

Ni.Sumi

Hi @gabor53 ,

void QGridLayout::addWidget(QWidget * widget, int fromRow, int fromColumn, int rowSpan, int columnSpan, Qt::Alignment alignment = 0)

check Calculator example for gridlayout.

gabor53

Hi,
Unfortunately```
grid->addWidget (Title,0,0,1,4);

still puts the title in the middle.

kshegunov

@gabor53
What is age and why are you doing this:

Additem::setLayout (grid);

that way?

If I'm understanding you correctly you either want to have a QVBoxLayout and use it like this:

QVBoxLayout * layout = new QVBoxLayout(widgetHavingTheLayout);
layout->addWidget(Title);
layout->addWidget(scroll);

Or maybe something like this with a grid layout:

QGridLayout * grid = new QGridLayout(widgetHavingTheLayout);
grid->addWidget(Title, 0, 0);
grid->addWidget(scroll, 1, 0);
grid->addItem(new QSpacerItem(1, 1), 2, 1);

Kind regards.

gabor53

The code gave me the following layout:

	grid->addWidget (Title,0,0);
    grid->addWidget (scroll,1,0);
    grid->addWidget (test,2,0);

Image of layout
How can I place the "test" text into to scroll area, 0,0 position?
Thank you.

kshegunov

@gabor53
Honestly I don't understand what exactly you're trying to achieve, but to put "test" into the scroll area you add it to its widget, not next to the scroll area. Something like this:

QVBoxLayout * scrollLayout = new QVBoxLayout(viewport);
scrollLayout->addWidget(test);

Kind regards.

gabor53

Hi,
The problem is, that the original code

    QScrollArea *scroll = new QScrollArea(this);
    scroll->setVerticalScrollBarPolicy (Qt::ScrollBarAlwaysOn);
    scroll->setHorizontalScrollBarPolicy (Qt::ScrollBarAlwaysOn);

    QWidget *viewport  = new QWidget(this);
    scroll->setWidget (viewport);
    scroll->setWidgetResizable (true);

    // Adding layout

    QLabel *test = new QLabel;
    test->setText ("test");

    QGridLayout *grid = new QGridLayout;
    grid->addWidget (scroll);
    Additem::setLayout (grid);

	grid->addWidget (test);

places the test label to the bottom of the Dialog while the scroll area is right above it. I would like to place the test label to the top left corner of the scroll area. I appreciate any ideas.
Thank you.

kshegunov

@gabor53
Right, and I count three posts proposing possible solutions. Have you checked them out?

gabor53

Yes. I checked them and none of them does what I need. The last one crashed Qt.

Ni.Sumi

Hi @gabor53 ,

I made solution for you. Download this and try this code. Dropboxhere
@kshegunov has already given you the solution.

Result image . You want "Test " inside the topleft corner of "Scroll" area. But you have coded it in different way. you have made Gridlayout and added "scroll & test" to it. Then how can you get "Test" inside the "scroll" area. Make gridlayoout inside the Scrollarea and add widgets.

kshegunov

@gabor53
Well, I'm sorry that none of them worked for you. I currently have no more ideas, maybe try what @Ni-Sumi is suggesting?

Kind regards.

Ni.Sumi

@kshegunov , You have given the 100% correct solution.

@gabor53 seems missed layout inside the Scrollarea. Instead of making layout inside the Scrollarea, @gabor53 has made layout outside the scrollarea and expecting that layout to be inside.

Caution: My point will valid only If gabor53 wants "Test " label inside the scroll area.

gabor53

Thank you all. I got it now and it works nicely.

Ni.Sumi

@gabor53

Please it as Solved .