Create a MessageDialog using Qt Creator

[qcoderpro]

I want to test this example: https://doc.qt.io/qt-5/qml-qtquick-dialogs-messagedialog.html

import QtQuick 2.2
import QtQuick.Dialogs 1.1

MessageDialog {
    id: messageDialog
    title: "May I have your attention please"
    text: "It's so cool that you are using Qt Quick."
    onAccepted: {
        console.log("And of course you could only agree.")
        Qt.quit()
    }
    Component.onCompleted: visible = true
}

So created a Qt 5.15 Qt Quick project called QML_4 and tested that:

import QtQuick 2.15
import QtQuick.Dialogs 1.1

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    MessageDialog {
        id: messageDialog
        title: "May I have your attention please"
        text: "It's so cool that you are using Qt Quick."
        onAccepted: {
            console.log("And of course you could only agree.")
            Qt.quit()
        }
        Component.onCompleted: visible = true
    }
}

And I get this error: qrc:/QML_4/main.qml:2:1: module "QtQuick.Dialogs" version 1.1 is not installed

Up to know, I have tested making use of a MessageDialog in various QtQuick projects with qmake or CMake build system, Qt 6 or Qt 5 version of the Qt, and so forth. Yet it's not possible to use such a simple element in such a simple project using Qt Creator 6! :|

[JKSH]

@qcoderpro said in Create a MessageDialog using Qt Creator:

Up to know, I have tested making use of a MessageDialog in various QtQuick projects with qmake or CMake build system, Qt 6 or Qt 5 version of the Qt, and so forth. Yet it's not possible to use such a simple element in such a simple project using Qt Creator 6! :|

https://doc.qt.io/qt-6/qml-qt-labs-platform-messagedialog.html

Try "import Qt.labs.platform 1.1" (version number only needed in Qt 5, not Qt 6) instead of "import QtQuick.Dialogs 1.1".

Note: This version of MessageDialog is a bit different from the one you linked.

[qcoderpro]

@JKSH

Try "import Qt.labs.platform 1.1" (version number only needed in Qt 5, not Qt 6) instead of "import QtQuick.Dialogs 1.1".

Thanks, it worked, but why do I need to import Qt.labs.platform 1.1 while the project is not of Qt 6 but Qt 5?

The second question about that part is that, while the project works, but Qt Creator 6 doesn't recognize the element and draws a red line under it!
Up to know, I guess Qt5 was better than the existing Qt6.

Note: This version of MessageDialog is a bit different from the one you linked.

That version does not give the expected output. So you think why I'm downgrading to qmake and Qt 5 while I'm normally using Qt6 and CMake! :|