QMainWindow independent

Question

I have two QMainWindows. I would like when a QMessageBox is displayed on a QMainWindow with an exec(), the other QMainWindow isn't blocked.

The two QMainWindow must be independent.

How do this ?

For the moment nothing. But I think QmainWindows must be independant as if they was QThreads. — artoon, Aug 22 '13 at 07:51

score 2 · Accepted Answer · edited Aug 22 '13 at 08:08

It has nothing to do with QThread, the Qt documentation states that you can have only ONE GUI thread in a QT application.

What you should do is to set the modality flag to make the dialog modal, so it will be modal related to its parent window. Before executing the dialog, call:

pDialog->setWindowModality( Qt::WindowModal );

And don't forget to set a proper parent for your dialog object.

Qt documentation states: -

Modal Dialogs

A modal dialog is a dialog that blocks input to other visible windows in the 
same application. Dialogs that are used to request a file name from the user or 
that are used to set application preferences are usually modal. Dialogs can be 
application modal (the default) or window modal.

score 0 · Answer 2 · answered Aug 22 '13 at 07:45

0

Use the show() method to display each QMainWindow instead of exec().

answered Aug 22 '13 at 07:45

RobbieE

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QMainWindows are displayed with show. And I need to use exec for QMessageBox to treat the result. – artoon Aug 22 '13 at 07:47

QMainWindow independent

2 Answers2