How to set a dialog ontop on the page,and except for other programs

[Otis.Lin]

hi everyone I use Qt5.5 on MacOS
the problem is
I have a main pageA, and have a button, when I push button
it will exec() pageB, and pageB also have a button, the button will show a dialog is pageC.
But I want pageC always top on the pageB, but if I open other app pageC can't on the top.

the Main pageA is a QMainWindow and have a function

void ButtonClickExecPageB ()  
{
    QDialog *PageB = new PageBDialog(this);
    PageB->setWindowFlags(Qt::Window|Qt::WindowCloseButtonHint);
    PageB->exec();
}

and PageBDialog also have a Function

void ButtonClickShowPageC()
{
QDialog *PageC = new PageCDialog(this);
PageC->setWindowFlags(Qt::Dialog | Qt::WindowStaysOnTopHint);
PageC->show();
}

I set WindowStaysOnTopHint for PageC, but if I Click PageB the PageC will goto bottom, if I open other app it on the Top its very strange.

I also try PageC->setWindowFlags(Qt::Tool | Qt::WindowStaysOnTopHint), now I open other app it will go to bottom.
But if I Click PageB the PageC still goto bottom.
somebody have any idea? please teach me please.
thanks.

[Pradeep Kumar]

Hi,

@Otis-Lin

As u said u want the respective dialogs to be on top when button is clicked, from respective screens,
and what app ur mentioning, ru using only one app?, how is it.
coz u said if if ur using other app, pageC cant be on top. from ur post,

And looking at the slot, each time when u click button memory is created for respective Dialogs, and leading to memory leak, each time dialog object gets created, be caution.
in case ur deleting its k.

Thanks,

[jsulm]

@Otis.Lin Why do you call

PageC->show();

if you want PageC to be always on top of PageB?
Use

PageC->exec();

[Otis.Lin]

@Pradeep-Kumar
it's like I click button and show the PageC, now maybe I open the safari, in normally safari
will up than PageC, but in fact only PageC will up than safari.
The program just a example so it's not very rigorous, thanks for your reminder.

[Otis.Lin]

@jsulm
hello, because if show PageB I don't want user can use PageA so I use PageB-> exec().
But the PageC it's like a sub function. the PageC will always on the PageB, and I can use the PageB and PageC.