How to do that?

[mcosta]

Here is sample:


So I would like to do something similar. As You can see there is some QGroupBox with 3 horizontal QLayouts in it. These layouts contains some widgets. And here appears my problem. How to put these layouts inside this groupbox. Setting QGroupBox as a parent doesn't seem to work, because debug functions say that QGroupBox already have a layout. When I do that in a "traditional way" (creating QLayout with QGroupBox as a parent) these widgets don't show in program.
Please help.

You must use QWidget::setLayout.

QHBoxLayout* lay1 = new QHBoxLayout;
lay1->addWidget(wgt1_1);
...
lay1->addWidget(wgt1_N);
 
..........
 
QHBoxLayout* layN = new QHBoxLayout;
layN->addWidget(wgtN_1);
...
layN->addWidget(wgtN_N);
 
QVBoxLayout* v = new QVBoxLayout;
v->addLayout(lay1);
...
v->addLayout(layN);
 
grpBox->setLayout(v)

QHBoxLayout* lay1 = new QHBoxLayout;
lay1->addWidget(wgt1_1);
...
lay1->addWidget(wgt1_N);

..........

QHBoxLayout* layN = new QHBoxLayout;
layN->addWidget(wgtN_1);
...
layN->addWidget(wgtN_N);

QVBoxLayout* v = new QVBoxLayout;
v->addLayout(lay1);
...
v->addLayout(layN);

grpBox->setLayout(v)

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where wgtX_X are widget to add and grpBox are your QGroupBox.