Width of QHBoxLayout is restricted in QDialog

[makopo]

Hello,

I'am using a QDialog window that opens if a user press a special key or interacts with the menu bar.

I create a class that inherits QDialog and create a instance of QHBoxLayout. If I use the horizontal layout I can see that the width of the layout is cropped /restricted.

m_hLayout->addWidget(m_one);
m_hLayout->addWidget(m_two);
m_hLayout->addWidget(m_three);
m_hLayout->addWidget(m_four);
//m_groupMag->setFixedSize(500, 700); //adding a fixed size shows the button with the full size.
m_groupMag->setLayout(m_hLayout);

One way to correct this is to set the size of the QWidget that sets the layout to a fixed size. Nevertheless I think that is can not be the correct way.
If I use the QVBoxLayout there is no problem with any restriction. The elements are shown with the full size vertically.

The dialog window opens with the showMaximized() function.
Any idea what the problem is?

Kind regards.

[jsulm]

@makopo said in Width of QHBoxLayout is restricted in QDialog:

m_groupMag

Is this widget also in a layout?

[makopo]

@jsulm
No, the widget only sets the layout.

[jsulm]

@makopo Then m_groupMag will not resize or fill free space. Put it also in the layout of its parent.

[makopo]

@jsulm

Thank you. I think I missunterstand the Layout Concept of Qt. After removing the widget I got a correct horizontal layout.
Think I have to study the docs a bit more.