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How to set QMainWindow as the modal one?

I am using QMainWindow for GUI development of my project..One problem I am Stuck with is blocking all other visible windows from getting input, while one is in operation.

I can not use QDialog.Because rich features of QMainWindow is required.

How can I declare a particular window as modal?

I tried with QWidget::setWindowMOdality().

Here is a demo program, what I tried but it didnt work.

#include <QApplication>
#include <QMainWindow>
#include <QPushButton>




int main(int argc, char **argv){


QApplication a(argc, argv);


    QMainWindow *w1 = new QMainWindow();
    w1->resize(500,800);
    w1->move(100,50);
    w1->show();


    QMainWindow *w2= new QMainWindow();
    w2->resize(800,500);
    w2->move(50,50);
    w2->show();

    w2->setWindowModality(Qt::ApplicationModal);


    return a.exec();

}
over 4 years ago · Santiago Trujillo
2 answers
Answer question

0

Try setting the modal flag first, then show the widget.

w2->setWindowModality(Qt::ApplicationModal);
w2->show();

Also you could use QWidget and build the toolbar, menu bar and status bar.

over 4 years ago · Santiago Trujillo Report

1

Thanks for your answers, it helped me a lot with blocking the main window

In each of my forms I add that line of code to the constructor

 This->setWindowModality(Qt::ApplicationModal);
about 4 years ago · Daniel Ramos Report
Answer question
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