#include #include #include "filter.h" int main(int argc, char *argv[]) { QApplication app(argc, argv); filter *eventFilter = new filter; app.installEventFilter(eventFilter); QQmlApplicationEngine engine; engine.load(QUrl(QStringLiteral("qrc:///main.qml"))); QObject *rootObject = engine.rootObjects().first(); QObject::connect(eventFilter, SIGNAL(ctrlPressed()), rootObject, SLOT(ctrlKeyPressed())); QObject::connect(eventFilter, SIGNAL(ctrlReleased()), rootObject, SLOT(ctrlKeyReleased())); return app.exec(); }