moved native event handler to it's proper file

src/util/nativeeventhelper.hpp

@@ -4,6 +4,7 @@
 #include <windows.h>
 #include <boost/optional.hpp>
 
+#include <QAbstractNativeEventFilter>
 #include <QLibrary>
 
 namespace chatterino {
@@ -36,6 +37,32 @@ static boost::optional<UINT> getWindowDpi(quintptr ptr)
 
     return boost::none;
 }
+
+#ifdef USEWINSDK
+class DpiNativeEventFilter : public QAbstractNativeEventFilter
+{
+public:
+    bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override
+    {
+        MSG *msg = reinterpret_cast<MSG *>(message);
+
+        if (msg->message == WM_NCCREATE) {
+            QLibrary user32("user32.dll", NULL);
+            {
+                typedef BOOL(WINAPI * EnableNonClientDpiScaling)(HWND);
+
+                EnableNonClientDpiScaling enableNonClientDpiScaling =
+                    (EnableNonClientDpiScaling)user32.resolve("EnableNonClientDpiScaling");
+
+                //                if (enableNonClientDpiScaling)
+                //                    enableNonClientDpiScaling(msg->hwnd);
+            }
+        }
+        return false;
+    }
+};
+#endif
+
 }  // namespace util
 }  // namespace chatterino