Prevent Messagedialog from closing application

firen

Hi,
I deleted (sorry for deleting, guess thats not the right way) to early my old question, but anyway here again:

Lets say I have one ApplicationWindow:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12
import QtQuick.Controls.impl 2.3
import QtQuick.Dialogs 1.1
import QtCharts 2.3

ApplicationWindow {
    id: applicationWindow1
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Loader{
        id:loader
    }

    Button {
        id: button
        x: 270
        y: 220
        text: qsTr("Button")
        onClicked:
        {
            applicationWindow1.visible = false;
            loader.source = "test123.qml";
        }
    }
}

And the otherone which is loaded:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12
import QtQuick.Controls.impl 2.3
import QtQuick.Dialogs 1.1
import QtCharts 2.3

ApplicationWindow {
    id: applicationWindow2
    width: 640
    height: 480
    visible: true
    title: qsTr("New")


    MessageDialog{
        id: analysisDone
        visible: true
        standardButtons: StandardButton.Ok

    }

}

What is the right way to prevent, that the closing of the Messagedialog closes the whole application?

IntruderExcluder

Not sure what are you trying to achieve, but I do not think that having two ApplicationWindow instances in one application is an a good idea. If you want to show dialog by pressing button, you can have it defined in your first qml, just set it to unvisible:

Button {
    onClicked: dlg.open()
}

MessageDialog {
    id: dlg
    visible: false
}

If you want to save a bit of memory, you can go in dynamic way, using Component, but make sure if you destroy your objects properly.

GrecKo

@IntruderExcluder said in Prevent Messagedialog from closing application:

Not sure what are you trying to achieve, but I do not think that having two ApplicationWindow instances in one application is an a good idea.

There's nothing special about ApplicationWindow, having 2 of them is not a problem.
It's just a convenience class on top of Window with builtin support for header, footer and overlays.

IntruderExcluder

@GrecKo Ok, but I do not know, why closing dialog causes application to quit, thats strange. 🤔

firen

it seems that it is important which file is used in the engine

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/login.qml")));

As long as i keep everything in this qml the behaviour is "normal". If I change to another ApplicationWindow with a loader I get the strange thinks.

Maybe I have to change to a layout with only one ApplicationWindow