<![CDATA[Font properties and stylesheets in the Designer]]>I have some difficulties to understand the behavior of fonts and stylesheets in the Designer
Here is an example

I add a label and a Tab Widget
a1749334-c28a-49c4-a5de-520ed305c24a-image.png

Apply a vertical layout
c62c5353-06f2-42dd-90f9-708eb82d715f-image.png

Change text and properties of the top label
4a317008-94a8-434f-9c2e-2cccedd31e7a-image.png

Change Font size property of the Tab Widget to 12
fadf453e-82b1-4209-bf80-c5e07096bb22-image.png

Add a label to Tab 1 page and another below the Tab Widget
69d35112-3495-4147-92f2-84f6bd458e5b-image.png

My first question
Why is the font size of the Label on the Tab Widget automatically changed to 12, the same size as for the text in the tabs
290dade9-2ce0-44a9-88bc-8937e7a4ffb3-image.png
and the label outside the Tab Widget keeps the default size
58d9c218-c398-45e0-afa0-3fdc3f408a7b-image.png

I was expecting that the label added to Tab 1 would also feature the default size of 8

Now I add a few other Labels and a vertical layout to the Tab 1 page
7ed69335-e59a-4caf-a21e-87aa8c16f93d-image.png

I would like that the text in all labels in the Tab Widget are centered using Stylesheets
From the documentation I know that {text-align: center} is not supported for labels, but I found a post on this forum explaining that the following is working
QLabel {qproperty-alignment: AlignCenter;}

So I right click on the tabs to open the Stylesheet window and add the above code
72b74f81-f06a-45fd-994c-21c65a3485a2-image.png

When I click Apply all the labels are centered as expected
acb2e8f7-c392-48f2-b17e-6f67cf338209-image.png

But when I close the Stylesheet window the font size of the labels is set to the default value 8.
5407ba50-af4b-4485-92be-10c58cf291e7-image.png

Why?

Worse, when I run the application the labels are even not centered
9ab05f10-fe00-487c-bab1-6d1720706e8d-image.png

]]>https://forum.qt.io/topic/130213/font-properties-and-stylesheets-in-the-designerRSS for NodeThu, 05 Nov 2026 01:28:59 GMTFri, 10 Sep 2021 20:18:57 GMT60<![CDATA[Reply to Font properties and stylesheets in the Designer on Fri, 10 Sep 2021 20:31:54 GMT]]>@Bert59 said in Font properties and stylesheets in the Designer:

Change Font size property of the Tab Widget to 12

Change Font size property of the Tab Widget to 12 <== for all contents in tab widget including all TextLabels.
if you want to change the font of text labels, you can set different font size to them separately.
QLabel has func setFont()

Label {
    text: "Hello world"
    font.pixelSize: 22 <========
    font.italic: true
    color: "steelblue"
}
]]>https://forum.qt.io/post/680123https://forum.qt.io/post/680123Fri, 10 Sep 2021 20:31:54 GMT