hovering over child widgets, Qt::WA_NoMousePropagation not working

OZaric

No, thats actually a bigger project, this was just a small illustrative example.
I have ofc. a mainwindow and so on...
I noticed this problem when i put a ComboBox(as selector) inside a StackedWidget. I am subclassing the widgets directly in order to inherit all the public members.
I did something like this ...

class StackedWidget : public QStackedWidget
{
    StackedWidget(...) {analogous to above example}
    QComboBox pageComboBox;
}

mrjj

Hi
I agree - its a bit odd.
QLabel might have some special flag.
Did you try with Qwidgets ?

OZaric

I have tried it with QComboBox/QStackedWidget because thats actually where i need it.

mrjj

@OZaric
Just tried with QWidgets and mainwindow and indeed the mouse
bleed through.

OZaric

Anyway Thank You for your time !

mrjj

@OZaric
It seems that Qt::WA_NoMousePropagation have no effect
Im using Qt 5.10
What version are you testing with ?

OZaric

I am working with Qt 5.9.3. I have here a few (including static builds), tested on all without success.

mrjj

Hi
Seems parent widget always get a hover when you enter its area even if a child
is covering the entry area
alt text

Not sure its a bug or by design. Lets see what others say.

SGaist

Hi,

Can you share your test sample ?

mrjj

Hi
https://www.dropbox.com/s/egw6zy7lodscqr5/hovertest.zip?dl=0

OZaric

Samuel Gaist, the qt legend :D
I am reading you already for years in this forum!

Check it out, it seems like setting attr Qt::WA_NoMousePropagation has no effect at all.

SGaist

It is used in QComboBox.

Did you already saw the QHoverEvent description especially the part about propagation ?

OZaric

It is used in QComboBox.

Are you sure ? , because its not working for my QComboboxes neither!
Mouse is over the left history button in this picture.

Did you already saw the QHoverEvent description especially the part about propagation ?

I did. This link is actually also in my original question.

mrjj

Hi
The sample sets Qt::WA_NoMousePropagation on "CHILD"
in mainwindows ctor but it made no difference.

The CHILD label seems to be aligned with Parents client rect and in theory
cursor should be able to enter the CHILD directly but i suspect the truth is
that entering a widget always enters the parent first regardless of the visual
representation.

alt text

SGaist

Sorry, I misread the link you used.

As for QComboBox, yes I am. See here.

OZaric

Hmmm ok.