How to set modality to QWidget

Fulgurance

Hello, i'm working actually into software, and i need to set modality for class inherit to QWidget, because i wouldn't like user can input into previous Widget

Is it mandatory and better to inherit to QDialog?

JKSH

You can edit the QWidget's windowModality property: https://doc.qt.io/qt-5/qwidget.html#windowModality-prop

Fulgurance

Yes,i have seen that, but when i do setWindowModality(Qt::WindowModal);, nothing, the previous window is available.

Look:

void MainWindow::initialize()
{
    setWindowTitle("Caisse");
    //setWindowIcon(QIcon(""));
    setWindowFlags(Qt::WindowMinimizeButtonHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint);
    setWindowModality(Qt::WindowModal);
    initialize_pointers();
    setLayout(main_layout);
}

SGaist

Hi,

Without the rest of the code it's going to be difficult find what is going wrong.

mrjj

Hi
You can also use
setWindowModality(Qt::ApplicationModal);

Fulgurance

Oh yes perfect! Thanks you very much!

mrjj

@JKSH
Hi
while we talk about Qt::WindowModality
Since have to give a QWidget no parent to have be a window, how would
setWindowModality(Qt::WindowModal);
Be able to work as it has no parent then?
Do you know the secret :) ?

JKSH

@Fulgurance said in How to set modality to QWidget:

Oh yes perfect! Thanks you very much!

Great! Happy coding :)

@mrjj said in How to set modality to QWidget:

while we talk about Qt::WindowModality
Since have to give a QWidget no parent to have be a window, how would
setWindowModality(Qt::WindowModal);
Be able to work as it has no parent then?
Do you know the secret :) ?

Ha! I didn't even think about that.

Qt::WindowModal is probably useless for widgets that don't inherit QDialog.

Bonnie

@mrjj
Actually a QWidget can be a window and have a parent at the same time.
It just need to have Qt::Window flag set.
And it acts similar to a QDialog (which also have Qt::Window flag) with a parent.

JKSH

@Bonnie said in How to set modality to QWidget:

Actually a QWidget can be a window and have a parent at the same time.
It just need to have Qt::Window flag set.
And it acts similar to a QDialog (which also have Qt::Window flag) with a parent.

Well-spotted. Thanks!