-        } else
-            if (event.m_eventType == wxEVT_SCROLL_BOTTOM) {
-                wevent.m_eventType = wxEVT_SCROLLWIN_BOTTOM;
-            } else
-                if (event.m_eventType == wxEVT_SCROLL_LINEUP) {
-                    wevent.m_eventType = wxEVT_SCROLLWIN_LINEUP;
-                } else
-                    if (event.m_eventType == wxEVT_SCROLL_LINEDOWN) {
-                        wevent.m_eventType = wxEVT_SCROLLWIN_LINEDOWN;
-                    } else
-                        if (event.m_eventType == wxEVT_SCROLL_PAGEUP) {
-                            wevent.m_eventType = wxEVT_SCROLLWIN_PAGEUP;
-                        } else
-                            if (event.m_eventType == wxEVT_SCROLL_PAGEDOWN) {
-                                wevent.m_eventType = wxEVT_SCROLLWIN_PAGEDOWN;
-                            } else
-                                if (event.m_eventType == wxEVT_SCROLL_THUMBTRACK) {
-                                    wevent.m_eventType = wxEVT_SCROLLWIN_THUMBTRACK;
-                                }
-                                
-                                GetEventHandler()->ProcessEvent(wevent);
+        else if (event.m_eventType == wxEVT_SCROLL_BOTTOM)
+            wevent.m_eventType = wxEVT_SCROLLWIN_BOTTOM;
+        else if (event.m_eventType == wxEVT_SCROLL_LINEUP)
+            wevent.m_eventType = wxEVT_SCROLLWIN_LINEUP;
+        else if (event.m_eventType == wxEVT_SCROLL_LINEDOWN)
+            wevent.m_eventType = wxEVT_SCROLLWIN_LINEDOWN;
+        else if (event.m_eventType == wxEVT_SCROLL_PAGEUP)
+            wevent.m_eventType = wxEVT_SCROLLWIN_PAGEUP;
+        else if (event.m_eventType == wxEVT_SCROLL_PAGEDOWN)
+            wevent.m_eventType = wxEVT_SCROLLWIN_PAGEDOWN;
+        else if (event.m_eventType == wxEVT_SCROLL_THUMBTRACK)
+            wevent.m_eventType = wxEVT_SCROLLWIN_THUMBTRACK;
+        else if (event.m_eventType == wxEVT_SCROLL_THUMBRELEASE)
+            wevent.m_eventType = wxEVT_SCROLLWIN_THUMBRELEASE;
+
+        GetEventHandler()->ProcessEvent(wevent);