first push

main.cpp

@@ -0,0 +1,20 @@
+#include <QApplication>
+#include <QQmlApplicationEngine>
+
+#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();
+}