Add "Five + 2 Wheels" option for horizontal wheel reporting

src/qt/macos_event_filter.mm

@@ -37,6 +37,7 @@ CocoaEventFilter::nativeEventFilter(const QByteArray &eventType, void *message,
                 return true;
             }
             if ([event type] == NSEventTypeScrollWheel) {
+                mouse_set_w(-[event deltaX]);
                 mouse_set_z([event deltaY]);
                 return true;
             }

src/qt/qt_rendererstack.cpp

@@ -210,8 +210,10 @@ RendererStack::wheelEvent(QWheelEvent *event)
 
 #if !defined(Q_OS_WINDOWS) && !defined(__APPLE__)
     double numSteps = (double) event->angleDelta().y() / 120.0;
+    double numStepsW = (double) event->angleDelta().x() / 120.0;
 
     mouse_set_z((int) numSteps);
+    mouse_set_w((int) numStepsW);
 #endif
     event->accept();
 }

src/qt/qt_winrawinputfilter.cpp

@@ -330,6 +330,7 @@ WindowsRawInputFilter::mouse_handle(PRAWINPUT raw)
     static int x, delta_x;
     static int y, delta_y;
     static int b, delta_z;
+    static int delta_w;
 
     b = mouse_get_buttons_ex();
 
@@ -367,6 +368,12 @@ WindowsRawInputFilter::mouse_handle(PRAWINPUT raw)
     } else
         delta_z = 0;
 
+    if (state.usButtonFlags & RI_MOUSE_HWHEEL) {
+        delta_w = (SHORT) state.usButtonData / 120;
+        mouse_set_w(delta_w);
+    } else
+        delta_w = 0;
+
     if (state.usFlags & MOUSE_MOVE_ABSOLUTE) {
         /* absolute mouse, i.e. RDP or VNC
          * seems to work fine for RDP on Windows 10