Qt window on top of virtual keyboard

alecs26

Hello,

I have a Qt window that I want to stay on top of everything. I have done that with

flags: Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint | Qt.WindowTransparentForInput

However, it does not stay on top of all windows. For instance, it does not stay over virtual keyboards (for instance the default windows osk keyboard, which is a keyboard on the screen).

I have tried

flags: Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint | Qt.WindowTransparentForInput| Qt.X11BypassWindowManagerHint

but it does not work either.

There seems to have some anwers in the following forum but I don't understand where to put these code lines and how.
http://stackoverflow.com/questions/3316350/active-windows-in-windows-and-qwidgetactivatewindow

I am on Windows10 with Qt5 QML Controls 2.

Thank you very much for your help !

Alex

mrjj

Hi
I do not think u can be on top of osk.exe
At least not via Qt . Maybe with tricks or timer
Also not even OTHER OSK apps can be over it so it seems really special :)

https://blogs.msdn.microsoft.com/oldnewthing/20110310-00/?p=11253

Can i ask, what is the use case?

alecs26

Thank you for your answer.

I have a circle following the mouse but when I get over the osk keyboard it gets under the keyboard.

However it get under other virtual keyboard as well so I am pretty sure there is a way to get "more on top" that I am now.
There seems to have some anwers in the following forum but I don't understand where to put these code lines and how.
http://stackoverflow.com/questions/3316350/active-windows-in-windows-and-qwidgetactivatewindow

Thank you !

Alex

mrjj

@alecs26

Well i use a tool
https://www.savardsoftware.com/turbotop/
to make my command prompt stay on top.

Even if its on top of all else. Not the osk.

So i doubt that
AllowSetForegroundWindow(ASF_ANY);
SetForegroundWindow();
can fix it.

To call them, you must include windows.h
and maybe link to some dll. (user32)
which dll is shown in MS docs.

alecs26

Perfect, thank you.

I would still like to try AllowSetForegroundWindow(ASF_ANY); and SetForegroundWindow();
So I guess I should call them in my main.cpp where I create the window ? I have:
QQmlComponent componentmain(&engine,QUrl(QStringLiteral("qrc:/main.qml")));
otherfunctions.objectmain=componentmain.create();

I can then just type:
AllowSetForegroundWindow(ASF_ANY);
SetForegroundWindow();

and it would apply to all windows ?
Or can I do this in the window QML code ?

Thank you !

mrjj

@alecs26

Hi
Im pretty sure you cannot call native api from QML
but in main.cpp should be fine.

Just tried with
AllowSetForegroundWindow(ASFW_ANY );
SetForegroundWindow((HWND)this->winId());

for a mainwindow and its still not over OSK

Maybe other will have a hint :)

alecs26

@mrjj thank you for your answer.
Just a small last thing. I tried the following code but I get an error for "SetForegroundWindow" :
error: invalid use of 'this' in non-member function SetForegroundWindow((HWND)this->winId());
I think it's a basic thing but I don't know what to do :(

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;

    QQmlComponent componentmain(&engine,QUrl(QStringLiteral("qrc:/main.qml")));
    QObject *objectmain;
    objectmain=componentmain.create();
        
    AllowSetForegroundWindow(ASFW_ANY);
    SetForegroundWindow((HWND)this->winId());
    
    return app.exec();
}

Thanks !

Alex

SGaist

Hi,

Because this is the current instance of a class with the methods of said class.

If you want to get a WinID, you have to get the one from you application main window.

alecs26

@SGaist I am very sorry for this basic question but from the following code, how can I get the WinId ?
I tried objectmain.WinId and componentmain.WinId but neither worked.

Thank you so much !

Alex

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;

    QQmlComponent componentmain(&engine,QUrl(QStringLiteral("qrc:/main.qml")));
    QObject *objectmain;
    objectmain=componentmain.create();
        
    AllowSetForegroundWindow(ASFW_ANY);
    SetForegroundWindow((HWND)this->winId());
    
    return app.exec();
}

jsulm

@alecs26 You cannot use this outside a class (C++ basics). As @SGaist already said you need to use your main window instead of this.