CODEWITHSUNDEEP
qtlayout
Srinath Avadhanula
Srinath Avadhanula

Reputation: 55

Qt: How to prevent some of the widgets from getting scrollbars

I have the following widget layout:

HBox
 - VBox
    - HBox
        widget "A"
        widget "B"
    - widget "C"
 - widget "D"

In other words, I have something like this:

+-----+--------------+
|  A  |              |
+-----+       C      |
|  B  |              |
+-----+--------------+
|         D          |
+--------------------+

Depending on the content, "A" and "B" need to expand and consume as much vertical space as is necessary without showing any scrollbars. "D" can contract as necessary.

I tried setting the sizePolicy() of "A" and "B" to be "Minimum" and implemented a sizeHint() for "A" and "B" depending on what they are displaying. However, I still see scrollbars in "A" and "B" while "D" has more space than it needs.

I also tried "minimumExpanding" for the sizePolicy(), but I still keep seeing scrollbars.

How do I make sure that if space is available, "A" and "B" get preferential treatment so that scrollbars are avoided?

Upvotes: 2

Views: 1256

Answers (2)

pnezis
pnezis

Reputation: 12331

Use the Expanding as size policy for A and B. For widget 'D' you should resize it every time the contents of A and/or B change. It's size policy should be minimum and you should use the setMinimumHeight.

If a widget has scrollbars then it should inherit from the QAbstractScrollArea. You could use the setHorizontalScrollBarPolicy and the setVerticalScrollBarPolicy in order to disable scrollbars:

A->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
B->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

Upvotes: 2

Tim Meyer
Tim Meyer

Reputation: 12600

You can set the minimumHeight and minimumWidth properties of A and B to the lowest possible value where there are no scrollbars. They will still be able to expand but won't shrink below that size.

[Edit:] After re-reading your question I realized your content of A and B don't always have the same size. Obviously the approach above would only be possible if you know the size of the content whenever it changes. You can just call setMinimumHeight()/setMinimumWidth() or equally setMinimumSize() from your code in this case.

Upvotes: 0

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