Analog of modal QDialog in QML

Varvara

How can i do this only in QML without QDIalog?

@
int main(int argc, char *argv[])
{
QApplication app(argc, argv);

QDialog dialog;
QVBoxLayout layout(&dialog);
QPushButton button1(QObject::tr("button1"), &dialog);
QPushButton button2(QObject::tr("button2"), &dialog);

layout.addWidget(&button1);
layout.addWidget(&button2);

QString windowPath;

QObject::connect(&button1, &QPushButton::clicked, [&dialog, &windowPath] {
    dialog.accept();
    windowPath = QStringLiteral("qrc:///window1.qml");
});

QObject::connect(&button2, &QPushButton::clicked, [&dialog, &windowPath] {
    dialog.accept();
    windowPath = QStringLiteral("qrc:///window2.qml");
});

if (dialog.exec&#40;&#41; == QDialog::Rejected)
    return 0;

QQmlApplicationEngine engine;
engine.load(QUrl(windowPath));

return app.exec();

}
@

timday

My guess would be you could create a "QML Window":http://qt-project.org/doc/qt-5/qml-qtquick-window-window.html and set its "modality property":http://qt-project.org/doc/qt-5/qml-qtquick-window-window.html#modality-prop to one of Qt.WindowModal or Qt.ApplicationModal. I've never done more than one-window QML myself though.

bootchk

The question is fuzzy: do you mean

"how do I embed a QML dialog in a C++ app?"

or "how do I get the same blocking semantics as an exec() call?"

If you mean the former, then read the docs under "embedding" or "interfacing C++ to QML." And then you can embed a QML Window or QuickControl Dialog.

If you mean the latter, its not as easy as setting the modality property of the QML Window or Dialog:

bq. Modality does not mean that there are any blocking calls to wait for the dialog to be accepted or rejected: only that the user will be prevented from interacting with the parent window or the application windows until the dialog is dismissed.

In other words, after your embedding C++ code invokes the dialog (say by sending a signal to a delegate that calls QML Dialog.open()), I think your embedding code (your C++ event loop) continues, it doesn't wait for the QML dialog to be accepted or canceled by the user.

In other words, there is no equivalent in QML to the QDialog.exec() C++ call. To get the same semantics, you must connect the accepted/canceled signals. I could be wrong.

bootchk