I used Qt Designer to create a layout. Because everything kept jumping around, I used groupboxes and horizontal/vertical layouts. The different sections should be of fixed size.
I have to make it all fit on a very small window... so I have to add all my groups into a ScrollArea.
I have been trying to make it work... to make it show the scroll bars. Resizing it did not have any effect.
I read that I must apply a layout - I had a very hard time applying it.
I chose the grid layout - with group boxes delimiting the areas that must remain fixed.
Still resizing the scroll area either gave me no scroll bars, or resized the contents of my group boxes - covering up qgraphicviews and buttons, even though my thought was that the contents have to be shown...
I finally made it all work - with scroll bars - once I made every single groupbox of fixed size.
So - right now - I have
Window ---> QWidget (sizePolicy (Preferred, Preferred, 0, 0))
scrollArea ---> QScrollArea (sizePolicy (Preferred, Preferred, 0, 0);
verticalScrollBarPolicy: ScrollBarsAsNeeded, same with horiz)
widgetResizable: checked)
scrollAreaWidgetContents ---> QWidget (layout: grid layout;
sizePolicy (Preferred, Preferred, 0, 0))
grp1 ---> QgroupBox (sizePolicy (Fixed, Fixed, 0, 0))
contents
grp2 ---> QgroupBox (sizePolicy (Fixed, Fixed, 0, 0))
contents
....
Still have a problem: I can resize the scroll area in the Designer, and set it to the size I will need. But even though the size is "Preferred" not "Fixed", once the program is running I can not resize the scroll area.
What I think the normal behavior should be: I should start with whatever the scroll area is, and hopefully I can set the window size to match the scroll area.
If I resize the window, the scroll area should follow.
What I see happening: The scroll area is of fixed size, and the window can be resized (but with empty area outside scroll area).
How can I make the scroll area still resize (and match the window, since it is the only object inside it) ?
