Fixed mouse scroll value on Windows.

examples/common/entry/entry_windows.cpp

@@ -706,7 +706,7 @@ namespace entry
 						ScreenToClient(_hwnd, &pt);
 						int32_t mx = pt.x;
 						int32_t my = pt.y;
-						m_mz += GET_WHEEL_DELTA_WPARAM(_wparam);
+						m_mz += GET_WHEEL_DELTA_WPARAM(_wparam)/WHEEL_DELTA;
 						m_eventQueue.postMouseEvent(findHandle(_hwnd), mx, my, m_mz);
 					}
 					break;