Bug at QTabWidget / QWidget resizeEvent ?
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Hi!
Since versions up to Qt 5.12.0 , all my Widget and Tab Widgets enter in a Infinite resizeEvent....
Becouse i have a lot of Scatter Graphics and Charts on my TabWidget , everytime o open the system all the charts and graphics start to recelculate their sizes causing performance impacts.
This is a problem for me , since i suppose the resizeEvent only happen when we resize the window...
Anyone know if the things change about this? This is a correct behaviour on the Widgets now?
PS:. I debbug the code some more times and i detect another strange behaviour. this infinite resize event happen and the size of the screen are being changed too!
Kind Regards.
Wolff -
Hi
Could you test with Qt5.13 and see if still happens ?
Also what platform ? windows/linux/mac?As far as i know, nothing was changed regarding when resizeEvent is called.
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Hi, Yes.
I test the same program with all versions since 5.11.3 , and in all versions after 5.11.3 (5.12.x and 5.13.0) this behaviour happen.
I´m using the Windows Plattform and using MinGW.
The only difference related to plattform is the compiler being used, when in the 5.11.3 version i use MinGW 530 and in the other versions the compiler MinGW 730 are being used.
Kind Regards.
Wolff -
Hi,
Can you provide a minimal compilable example that reproduces that behaviour ?
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Hi SGaist!
I´m Trying to do that, becouse to reproduce the behaviour i need build a new CWindow with two docking QTabWidgets (One for the Left and Other as Central Widget).
My problem are focused on the Central Docking Widget where i have 4 Widgets on the TabWidget.I´m receiving many strange behaviours from it, listed below:
- When i click on the tabs that have QCharts,Q3DScatter3DGraphics , the resizeEvent of the QMainWindow is estimulated.
- When i implement the resizeEvent of the Widgets involved (QMainWindow and TabWidgets) the behaviour changes.
Another strange detail is about the documentation of the QTabWidget, where tell us to not provide a Parent Pointer in the TabWidgets.
Usually i not code myself this events and on the initialization for all Widgets i pass the Parent Pointer this.So i believe there is something related with the treatment being made internally by Qt
whith the parent/child pointers, ore something like that.I only post this topic here becouse if i compile my system in the older version, the system works like a charm... :)
When i finish the Prototype i send here , ok?
Kind Regards.
Wolff -
Hi!
I not find what cause the behaviour, but reimplementing the resizeEvent() in all the Widget "Tree" (Becouse there a lot of Widgets inside of other Widgets) , The Strange behaviours start to stop.
So, for me i will reimplement this to not worry about it in future.
Thanks a lot for any help anyway. ;)
Kind Regards.
Wolff
