QSplitter becoming undistinguishable between QWidget and QTabWidget

Question

I am puting a QWidget and a QTabWidget next to each other in one horisontal splitter. And the splitter loses it\'s shape, you can know that there is a splitter only by hovering

Answer 1

I based this on the above code but it handles both splitter orientations. I just preferred non-opaque resizing and non-collapsible children. The grip consists of three parallel lines. You can play with the handle width, but grip at 7 looks good on Windows; haven't checked in Linux or Mac.

void helper::decorateSplitter(QSplitter* splitter, int index)
{
    Q_ASSERT(splitter != NULL);

    const int gripLength = 15; 
    const int gripWidth = 1;
    const int grips = 3;

    splitter->setOpaqueResize(false);
    splitter->setChildrenCollapsible(false);

    splitter->setHandleWidth(7);
    QSplitterHandle* handle = splitter->handle(index);
    Qt::Orientation orientation = splitter->orientation();
    QHBoxLayout* layout = new QHBoxLayout(handle);
    layout->setSpacing(0);
    layout->setMargin(0);

    if (orientation == Qt::Horizontal)
    {
        for (int i=0;isetMinimumSize(gripWidth, gripLength);
            line->setMaximumSize(gripWidth, gripLength);
            line->setFrameShape(QFrame::StyledPanel);
            layout->addWidget(line);
        }
    }
    else
    {
        //this will center the vertical grip
        //add a horizontal spacer
        layout->addStretch();
        //create the vertical grip
        QVBoxLayout* vbox = new QVBoxLayout;
        for (int i=0;isetMinimumSize(gripLength, gripWidth);
            line->setMaximumSize(gripLength, gripWidth);
            line->setFrameShape(QFrame::StyledPanel);
            vbox->addWidget(line);
        }
        layout->addLayout(vbox);
        //add another horizontal spacer
        layout->addStretch();
    }
}