Let GtkScrolledWindow handle scroll wheel events.

Reset visible range in wxListCtrl after scrolling.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47096 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/listctrl.cpp

@@ -4798,10 +4798,6 @@ void wxListMainWindow::SortItems( wxListCtrlCompare fn, long data )
 
 void wxListMainWindow::OnScroll(wxScrollWinEvent& event)
 {
-    // update our idea of which lines are shown when we redraw the window the
-    // next time
-    ResetVisibleLinesRange();
-
     // FIXME
 #if ( defined(__WXGTK__) || defined(__WXMAC__) ) && !defined(__WXUNIVERSAL__)
     wxScrolledWindow::OnScroll(event);
@@ -4809,6 +4805,10 @@ void wxListMainWindow::OnScroll(wxScrollWinEvent& event)
     HandleOnScroll( event );
 #endif
 
+    // update our idea of which lines are shown when we redraw the window the
+    // next time
+    ResetVisibleLinesRange();
+    
     if ( event.GetOrientation() == wxHORIZONTAL && HasHeader() )
     {
         wxGenericListCtrl* lc = GetListCtrl();

src/generic/scrlwing.cpp

@@ -277,10 +277,14 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event)
         m_scrollHelper->HandleOnMouseLeave((wxMouseEvent &)event);
     }
 #if wxUSE_MOUSEWHEEL
+    // Use GTK's own scroll wheel handling in GtkScrolledWindow
+#ifndef __WXGTK20__
     else if ( evType == wxEVT_MOUSEWHEEL )
     {
         m_scrollHelper->HandleOnMouseWheel((wxMouseEvent &)event);
+        return true;
     }
+#endif
 #endif // wxUSE_MOUSEWHEEL
     else if ( evType == wxEVT_CHAR )
     {