QMenu behaving differently on different platforms

[cRay]

Hi!

Im working on a project that will run on an embedded linux device. On the GUI that Im building I have a QPushButton that has a QMenu that is populated with a bunch of QWidgetActions.

On my desktop (Kubuntu 18.04 LTS) the QMenu just paints the QWidgets associated with the QWidgetActions in the QMenu (And this is the behaviour that I want)

On a Windows 10 machine the QMenu paints the QWidgets but it puts a border around them. This border can be deleted with

m_pMenu->setStyleSheet( "border: 0;" );

m_pMenu->setStyleSheet( "border: 0;" );

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On my embedded linux device (I run the application directly on the framebuffer) the QMenu paints the QWidgets but it puts a border around them but I cant turn the border off with the StyleSheet code that works on Windows.

Any ideas on what to do? I need to remove the border on the embedded linux device. QT Version on the embedded device is 5.12

Thanks!

[stryga42]

Hi cRay, could you explain in detail what you mean with "a QPushButton that has a QMenu"? Are you creating a QMenu like a context menu when the button is clicked? Just a weird idea: if you create the QMenu without parent, Qt probably creates a top level window where the decoration depends on the window manager of the system. Do you use QMenu:opup or QMenu::exec ?

[cRay]

I solved it, I added "-style Fusion" to the command line that started the app on the embedded system.

QPushButton has a method called "setMenu( QMenu* )" and by default it will show the menu once clicked, thats how I use it.