Key Event Filter for application

gogoer

Hello.
I have a big apllication with a lot of widgets. And i have a task to filter all autorepeate key press.
I registerered eventFilter() for application:

qApp->installEventFilter(this);

but it doest work. it filters events when they ignored by other widgets.
how can i filter key events before they riches cild wodgets?

dheerendra

Not a good ideal to place the filter for qApp itself. What the is done in the filter method ? Can you show it ?

gogoer

i need to filter repeatedly pressed buttons. I tryed do it like this:

bool ApplicationController::eventFilter(QObject *obj, QEvent *event)
{
    if (event->type() == QEvent::KeyPress) {
        QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
        int key = keyEvent->key();
        if(key==Qtv::Key_Ok && keyEvent->isAutoRepeat()){
            return true;
        }
    }
    return false;
}

but it filters only if other widgets ignores. i need to filter before other widgets.

mrjj

Hi
You can do it with notify override

#include <QApplication>
#include <QKeyEvent>
class Application final : public QApplication
{
public:
    Application(int &argc, char **argv) : QApplication(argc, argv) {}
    virtual bool notify(QObject *receiver, QEvent *event) override
    {
        if (event->type() == QEvent::KeyPress) {
            QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
            int key = keyEvent->key();
            if ( keyEvent->isAutoRepeat()) {
                return true;
            }
        }
       return QApplication::notify(receiver,event);
    }
};

Credits to dude on stackoverflow.