Qt get children from layout

c++ qt qt4 qt-designer
Alex Ivasyuv picture Alex Ivasyuv · Oct 31, 2010 · Viewed 52.9k times · Source

I try to hide all widgets in layout. But looks like findChildren doesn't work for layout.

Here's my sample code:

QLayout * layout = widget -> findChild<QLayout *> (layoutName);
QList<QWidget *> list = layout -> findChildren<QWidget *> ();

cout << list.size() << endl;

size is 0, but inside this layout I have a few widgets. But the same code works fine if I try to get widgets from parent widget.

How I can get them from appropriate layout?

Answer

Frank Osterfeld picture Frank Osterfeld · Nov 1, 2010

The layout does not "inject" itself in the parent-child tree, so the widgets stay (direct) children of their parent widget.

You could use QLayout::count() and QLayout::itemAt() instead.

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