Fill all space in QLayout

[ivanicy]

Hello!!

I have a custom widget that includes a QLabel and a QGraphicsView. I put this widgets in a layout by code but I don't know how to fill all the space available:

I want this effect:

This is my code:

void GraphicsWindow::displayGraphics(int iNumCols) {

    CUtil::clearLayout(ui->layoutCharts);

    int iRow = 0, iCol = 0;
    for (int iWidget = 0; iWidget < m_vectorWidgets.size(); iWidget++) {
        QWidget *widget = m_vectorWidgets.at(iWidget);
        widget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
        ui->layoutCharts->addWidget(widget, iRow, iCol, Qt::AlignCenter);
        iCol++;

        if (iCol == iNumCols) {       // iNumcols is the number of columns that I want
            iCol = 0;
            iRow++;
        }
    }
}

How can I fix it?

Thank you very much!!

[J.Hilk]

hi @ivanicy
said in Fill all space in QLayout:

m_vectorWidgets

I asume your custom widget, that contains the QLabel and QGraphicsView, is inside the m_vectorWidgets ?

the code you showed seems good. So it can only be one of two things, that I can think of:

• you have set a maxSize to the widget that is rather small the Layout will not resize its content beyond the maxsize of the items
• QLabel and QGraphicsView are not inside a Layout themself and therefore do not get resized when the parent/container resizes

[ivanicy]

@J.Hilk

I have put the widgets like the second image by default (when I run my program, they appear like the second image). To give functionality to the layout buttons, I put the widgets in this vector. But when I put again the widgets by code, they appear like the first image.

I don't set any size to the widgets. I don't know what can I do.

[J.Hilk]

@ivanicy very particular,

I just tested it in a small example, remove Qt::AlignCenter and it should work.

setting the alignment to Qt::AlignCenter seems to result in a disregard of the SizePolicy of the layout widgets.

[ivanicy]

@J.Hilk
Wow! thank you very much!! That works fine!