Adding widgets to QScrollArea

**ser_bur** · 16th May 2007, 19:43

Hi, guys.
Need some help...
The task is following: I need to place into QGroupBox some number of widgets - for example, QLabel. After filling this QGroupBox scrollbar must appear.
Code is next:

Qt Code:

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extGroupLayout = new QVBoxLayout;
groupBoxLayout = new QVBoxLayout;
scrollArea = new QScrollArea(this);
 
groupBox->setLayout(extGroupLayout);
extGroupLayout->addWidget(scrollArea);
scrollArea->setLayout(groupBoxLayout);
 
for(i=0;i<20;i++)
  {
//      Let's make our checkboxes...
     IDCheckbox[i] = new QCheckBox;
     groupBoxLayout->addWidget(IDCheckbox[i]);
  }

extGroupLayout = new QVBoxLayout;
groupBoxLayout = new QVBoxLayout;
scrollArea = new QScrollArea(this);

groupBox->setLayout(extGroupLayout);
extGroupLayout->addWidget(scrollArea);
scrollArea->setLayout(groupBoxLayout);

for(i=0;i<20;i++)
  {
//      Let's make our checkboxes...
     IDCheckbox[i] = new QCheckBox;
     groupBoxLayout->addWidget(IDCheckbox[i]);
  }

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After executing, checkboxes get minimal possible height, ignoring value, set by setMinimalHeight method; last of them are hiding behind the edge of scroll area, but scrolling is still impossible

Where is my problem? Don't say it is in my head

**marcel** · 16th May 2007, 20:00

Do this:

- Set this group box as the scroll area widget via QScrollArea::setWidget. You don't need to set a layout in the scroll area.
- Add all the widgets you need to add to your group box.

Be careful, because you may need to set some minimum sizes there ( for the scroll area, for example ).

Regards

**ser_bur** · 16th May 2007, 20:35

Well, i tried, but result is the same. Main detail is that i must add widgets not directly to GroupBox, but to layout: real interface is much more complicated than just column of checkboxes, as in example. I think this is a reason... Is there a possibility to use layout in this case without "compressing" added widgets?..

UPD: here is what i have at the moment:

**marcel** · 16th May 2007, 21:11

You hould have this:

QScrollArea <- QGroupBox <- a layout (whatever you need ) <- widgets ( created with the group box as parent and added to the layout ).

You also should set the size of the group box to match the QScrollArea's viewport size.

Regards