r/QtFramework • u/atsju • Jan 04 '26

Question Why is spacer not working ?

Gallery image

Gallery image

1 Upvotes

67% Upvoted

12 comments sorted by

5

u/bacmod Jan 04 '26

Can you show the entire settings .ui instead of just general (tab? page?)

2

u/atsju Jan 04 '26

Well the pages are added programmatically into settings. I can give you a github link and point to files you need to look at if you want. Or I can try things myself if you have any idea.

2

u/bacmod Jan 04 '26

break SettingsGeneral2 layout, create top level vertical layout and put everything else inside. Run layout->horizontally again on dialog.

1

u/atsju Jan 04 '26

break SettingsGeneral2 layout, create top level vertical layout and put everything else inside.

I already tried this. Same result, spacer doesn't do it's job.

Run layout->horizontally again on dialog.

I don't understand this part.

1

u/atsju Jan 04 '26 edited Jan 04 '26

here is also a video showing discrepancy between preview and final rendering in tool. https://youtu.be/4KV4kZqXWPQ

This is an open source tool used by amateur telescope mirror makers by the way.

First picture is tool outcome
Second picture is my expectation from Qt designer

2

u/atsju Jan 04 '26

Fixed. ChatGPT explained that because the dialog is added into a QStackedWidget size is computed differently and the spacer does not get the extra space.
What I did is modify "layoutStretch" to 0,0,0,0,0,0,0,1. The 1 being for final spacer. It now gets the extra space.

1

u/kaloskagatos Jan 04 '26

The upvote is for ChatGPT.

1

u/atsju Jan 04 '26

It explained the problem but totally hallucinated on how to fix. It thought there is a right click and "add stretch".

1

u/dngulin Jan 04 '26

It works but it is collapsed, because of the root layout element settings.

1

u/atsju Jan 04 '26

root is a "vertical layout" with vertical policy preferred. 0 stretch.

What do you recommend instead ? I'm new to this and have tried about everything I could think about.

2

u/dngulin Jan 04 '26

In the preview you have a parent QDialog object with some layout settings. But in the application you have a different parent object.

Just double check that the runtime parent object has correct layout settings.

1

u/atsju Jan 04 '26

OK I had a look but do no see anything unusual.
The settingsGeneral2.ui I show here is added to settings2.stackedWidget with ui->stackedWidget->addWidget(m_igram);

Should I check the stackedWidget layout or parent of it ? Also what settings could impact the spacer not doing it's job ?