MenuBar from Qt.labs.platform

[maxwell31]

Hi,

I tried using the Qt labs platform menubar, but the following test application does not show a menu:

import QtQuick 2.12
import QtQuick.Window 2.10
import Qt.labs.platform 1.0 as Platform
Window {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")
    Platform.MenuBar {
        id: menuBar
        Platform.Menu {
            id: fileMenu
            title: qsTr("File")
            // ...

            Platform.MenuItem {
                text: qsTr("Zoom In")
                shortcut: StandardKey.ZoomIn
                onTriggered: zoomIn()
            }
        }

        Platform.Menu {
            id: editMenu
            title: qsTr("&Edit")
            // ...
        }

        Platform.Menu {
            id: viewMenu
            title: qsTr("&View")
            // ...
        }

        Platform.Menu {
            id: helpMenu
            title: qsTr("&Help")
            // ...
        }
    }
}

What am I missing?

[Pradeep P N]

Hi @maxwell31

Did you notice the Application Output ? ( I tested on Qt 5.9.2 )

This gives you the hint i feel.

ERROR: No native Menu implementation available.
Qt Labs Platform requires Qt Widgets on this setup.
Add 'QT += widgets' to .pro and create QApplication in main().

All the best

[maxwell31]

Hm, I did not get such an error message, using Qt 5.12 and 5.13. also adding widgets did not change anything

[Pradeep P N]

Hi @maxwell31

• create QApplication in main().

If my guess is right your main.cpp has QGuiApplication, you need to change it to QApplication to support Qt Labs Platform.

On Android: (As MenuBar is currently available on macOS, Android & Linux Desktop only)

All the best.

[valera.gv]

I confirm the same problem MenuBar with QT 5.12.7 QT Labs Platform Experimental 1.1 under linux CentOS 7 (+last updates). I tried to use unsuccessfully: QT+=widgets & QApplication & with/without QCoreApplication::setAttribute(Qt::AA_DontUseNativeMenuBar).
But the qml control FileDialog perfect works as system FileDialog as widget FileDialog (Qt::AA_DontUseNativeDialogs).

PS Under the windows ( qt 5.13 ) it works fine.

PPS main.qml:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.12

import QtQuick.Dialogs 1.3 as OldDialogs
import Qt.labs.platform 1.1
import Qt.labs.settings 1.1
import "qrc:/../3rdparty/controls"

ApplicationWindow {
    visible: true
    width: 1024
    height: 600
    minimumWidth: 400
    minimumHeight: 200
...
    MenuBar {
        Menu {
            title: qsTr("&File")
            Menu {
                title: qsTr("&New")
...
   FileDialog {
        fileMode: FileDialog.OpenFile
...

The solution: Do not use Qt labs anymore :-///