black stripes in shapedclock example

Christian Ehrlicher

rect() is not correct here I would guess since in the ctor the size of the widget is not known. Do it in e.g. QWidget::resizeEvent()

al072

@Christian-Ehrlicher said in black stripes in shapedclock example:

rect() is not correct here I would guess since in the ctor the size of the widget is not known. Do it in e.g. QWidget::resizeEvent()

Thank you, but this is not a problem that cause a black stripes...
I tried also like this:

QRegion region(0,0,300,300, QRegion::Ellipse);

And take a look please on my first post, in default Qt example with the shapedclock i have the same behavior

Christian Ehrlicher

And as @mrjj already told yu it looks like a driver issue since the example works fine for us. Update your graphics driver, try another os.

al072

@Christian-Ehrlicher said in black stripes in shapedclock example:

And as @mrjj already told yu it looks like a driver issue since the example works fine for us. Update your graphics driver, try another os.

Driver is updated, i need a Windows as a target OS. Maybe there is another suggestions?

Christian Ehrlicher

@al072 said in black stripes in shapedclock example:

Maybe there is another suggestions?

What else do you want to hear? It's working fine for us on Linux and Windows with Qt5.15 so it's for sure no Qt problem.

mrjj

Hi
What Qt version are you using ? And win 10 or win 7 ?

Also, if you try
https://doc.qt.io/qt-5/qtwidgets-widgets-shapedclock-example.html

(its in Creator directly)

you also get these black lines ?

I tried that sample on win 10 and win 7 with Qt 5.15 and saw no issues.

al072

@mrjj said in black stripes in shapedclock example:

Hi
What Qt version are you using ? And win 10 or win 7 ?

Also, if you try
https://doc.qt.io/qt-5/qtwidgets-widgets-shapedclock-example.html

(its in Creator directly)

you also get these black lines ?

I tried that sample on win 10 and win 7 with Qt 5.15 and saw no issues.

I installed Qt 6.0.0, using Windows 10 and yes i run a sample directly from Creator examples and it cause me an issue

jsulm

@al072 You should try with Qt 5.15.2 also

al072

@Christian-Ehrlicher said in black stripes in shapedclock example:

@al072 said in black stripes in shapedclock example:

Maybe there is another suggestions?

What else do you want to hear? It's working fine for us on Linux and Windows with Qt5.15 so it's for sure no Qt problem.

Easy man, i am really knew to Qt (the first day), and i am just trying to find out should i use this lib for my project and proceed for commercial using or not.

And why are you sure that this is no Qt problem? If it work in one PC and doesn't work in another?
If you don't have any suggestions just leave it, thank you anyway

And sorry for newbie questions

Christian Ehrlicher

This is daily debugging stuff. If it does not work for you but others say it's working for them then you have to search for problems on your side by e.g. using another version, using a working example, use another PC or others.

al072

I found a solution, the problem was in scale and layout settings of windows display, i used a text scale of 175%, if i chose 100% shapedclock example works as expected without a black stripes.

But resolution is really small for me, all dialogs and buttons is really small, maube is there any workaround with it? Is it possible to draw a correct QWidget window under 175% text scale in windows settings?

Christian Ehrlicher

Please provide a minimal, compilable example to reproduce the issue and create a bug report with this information.

al072

@Christian-Ehrlicher said in black stripes in shapedclock example:

Please provide a minimal, compilable example to reproduce the issue and create a bug report with this information.

Ok i will make a bug report, but could you please tell ma how to create it and where? Link you provided doesn't work for me

Christian Ehrlicher

@al072 Fixed the link

al072

Here is a bug report : https://bugreports.qt.io/browse/QTBUG-90815

Christian Ehrlicher

Thx, do you have a chance to test it with 5.15 to see if this is a regression during Qt6 development?

al072

5.15 behave the same, it seems like it is an old bug

Christian Ehrlicher

@al072 Thx, updated the bug accordingly.

al072

@Christian-Ehrlicher said in black stripes in shapedclock example:

Thx, do you have a chance to test it with 5.15 to see if this is a regression during Qt6 development?

I am sorry for mix up.., but it seem like a regression with Qt6. I test it one more time with 5.15.2 but with static build and it works with any resolution

Christian Ehrlicher

You can change it in the bugreport too. Also add your observations there. thx.