Insert a layout into ScrollArea's layout

[Grzyboo]

What I want to achieve is this:
pic.png

The second TextEdit needs a spacer in a horizontal layout for this. I've made a layout like this:

QHBoxLayout* hLayout = new QHBoxLayout();
hLayout->addItem(new QSpacerItem(16, 64, QSizePolicy::Fixed, QSizePolicy::Fixed));
hLayout->addWidget((QTextEdit*)itemText); //Just fyi: itemText is an object of class that extends QTextEdit.

QHBoxLayout* hLayout = new QHBoxLayout();
hLayout->addItem(new QSpacerItem(16, 64, QSizePolicy::Fixed, QSizePolicy::Fixed));
hLayout->addWidget((QTextEdit*)itemText); //Just fyi: itemText is an object of class that extends QTextEdit.

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and tried to add it to an existing (vertical)layout that is set on the ScrollArea.

ui->scrollArea->widget()->layout()->addItem(hLayout);

ui->scrollArea->widget()->layout()->addItem(hLayout);

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But it only adds empty space with the height of spacer. Why doesn't the QTextEdit object appear?