selectively ignoring mouse events in Qt

I am writing an application that gets input from 3 mice. 2 of the mice are used for gestures and their input is handled separately, the 3rd should function as normal. I have successfully installed an eventfilter (see below) that runs my own mouse-processing code (processMouse()).

However, when trying to get the filter to ignore the events from certain mice (determined by the boolean return value of processMouse()), nothing gets ignored.

I have tried using the normal true/false return values, resetting the event to a "None" event, calling it's ignore function, but the mouse still keeps moving even when I tell it to ignore the event.

bool MainWindow::eventFilter(QObject *obj, QEvent *event){
    if ((event->type() == QEvent::MouseMove) ||
        (event->type() == QEvent::MouseButtonPress)){
        if (configured){
            if (!processMouse()){
                //event = new QEvent(QEvent::None);
        return true;

    return false;

How can I selectively ignore MouseMove events from an eventfilter?


This was eventually solved by using a 3rd party library named "ManyMouse", which receives each mouse's input separately.

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