How can I implement this layout?

[djfm]

Hi,

I want something that seems fairly simple but I can't manage to find how to do it.

I need to have widgets A and B in a vertical splitter, with the following constraints:

• A has a variable height but constrained between 30px and 150px
• B is expanding in all directions without limit
  I want A to have its minimal (30px) size when the application starts. The user is then free to change it using the splitter.

I have set A's verticalpolicy to Minimum, and B's vertical policy to Expanding.
I have set A's minimum height to 30 and maximum height to 150px. (If it matters, I'm doing this through the GUI in QtCreator).
I have not set any size constraints on B.

What happens is that A always reaches its maximum (150px) size on application startup.

Here is how it looks like (A is the QTextEdit at the top, B is the QTableView at the bottom):

!http://i.imgur.com/AatryYx.png(screenshot from the app)!

The maximum and minimum allowed sizes of A are well enforced, but I can't figure out how to make A start with its minimum height and not the maximum.

Any idea?

Thanks in advance!

[WizzZZ]

I think geometry values is what defines the size at startup. You might also want to try 'Preferred' as your size policy instead of minimum.

[djfm]

Thanks, but the geometry values are grayed out in QtEditor, I cannot change them!

[Chris Kawa]

QSplitter is a little tricky control sometimes. What you can do is:

• reset al the settings you've changed, sizes, policies etc. (just to avoid anything interfering)
• set only minimum and maximum height for the top widget (don't change policies, they don't really matter here)
• set Vertical Stretch of the top widget to 1
• set Vertical Stretch of the bottom widget to something high(like 100)

This should work as you wanted.
EDIT: It might not show in the designer, but it will work when you run the app.

[djfm]

Thanks, but it is actually worse:

!http://i.imgur.com/HQjqR2E.png(app screenshot)!

[Chris Kawa]

You must have set something on a wrong widget. It also looks like a splitter itself is somehow wrongly positioned. Can you show your object tree and describe what you changed on the surrounding widgets?

By the "top widget" in the previous post I meant textEdit, by the "bottom widget" - tableWidget.
For reference here's a screenshot with my working example:
!http://img405.imageshack.us/img405/2364/splitternl.jpg(splitter example)!

[djfm]

Ok my bad, I must have set something wrong, I redid it like you said and it is working now. Many thanks!