QProgressDialog: how to modal window

[sitesv]

Hi
How to make QProgressDialog modal?
In spite of setting parent and setting Qt::WIndowModal, it is not blocking parent window.

[Christian Ehrlicher]

Give it a proper parent.

[sitesv]

@Christian-Ehrlicher

I found a difference in setting parent style

1

void MDIChild::show_p(){
progress = new QProgressDialog("text","Cancel",0,100, this);
progress->setWindowModality(Qt::WIndowModal);
...
progress->show();
}

2

void MDIChild::show_p(){
progress = new QProgressDialog("text","Cancel");
progress->setParent(this);
progress->setWindowModality(Qt::WIndowModal);
...
progress->show();
}

Modality works fine for first "set parent" variant only. And, I don't know why, but blocks all application, not a parent (mdi child) window only.

[Cobra91151]

@sitesv

Hello!

You can try to set setWindowModality(Qt::ApplicationModal); to QProgressDialog object instead of Qt::WindowModal to check if it works for you in such case.
Also, I would suggest to call QProgressDialog - exec() method instead of show().

[sitesv]

@Cobra91151 the same result. QProgressDialog blocks all app.

[Cobra91151]

@sitesv

Do you have the same issue with a simple QDialog or just a QProgressDialog? I ask because I had some issue with QProgressDialog button and to fix it I created my own progress dialog class which inherits from QDialog class.

[sitesv]

@Cobra91151 , thanks for an advice.
Yes, this issue I have with QProgressDialog object only

[SGaist]

Hi,

There's one key information missing, what are you doing while the dialog is shown ?

[sitesv]

@SGaist said in QProgressDialog: how to modal window:

Hi,
There's one key information missing, what are you doing while the dialog is shown ?

Hi!
App waits for some process accomplish and user mustn't click anywhere on the app while qprocessdialog shows...

Same problem found with QMessageBox.
There is different behavior while centering in case of parent setting by constructor and by 'setParent'.

[JoeCFD]

@sitesv It could be a Qt bug. You can work around by disabling the parent widget or blocking all events handling inside the parent widget. I have to do this sometimes in my code for other reasons.