Remove erase background event handlers, in favor of SetBackgroundStyle.

src/gui/control/card_viewer.cpp

@@ -22,7 +22,9 @@ DEFINE_EVENT_TYPE(EVENT_SIZE_CHANGE);
 CardViewer::CardViewer(Window* parent, int id, long style)
   : wxControl(parent, id, wxDefaultPosition, wxDefaultSize, style)
   , up_to_date(false)
-{}
+{
+  SetBackgroundStyle(wxBG_STYLE_PAINT);
+}
 
 wxSize CardViewer::DoGetBestSize() const {
   wxSize ws = GetSize(), cs = GetClientSize();
@@ -154,6 +156,5 @@ Rotation CardViewer::getRotation() const {
 // ----------------------------------------------------------------------------- : Event table
 
 BEGIN_EVENT_TABLE(CardViewer, wxControl)
-  EVT_PAINT      (CardViewer::onPaint)
-  EVT_ERASE_BACKGROUND(CardViewer::onEraseBackground)
+  EVT_PAINT(CardViewer::onPaint)
 END_EVENT_TABLE  ()

src/gui/control/card_viewer.hpp

@@ -54,7 +54,6 @@ protected:
 private:
   DECLARE_EVENT_TABLE();
   
-  void onEraseBackground(wxEraseEvent&) {}
   void onPaint(wxPaintEvent&);
   
   Bitmap buffer;     ///< Off-screen buffer we draw to

src/gui/control/gallery_list.cpp

@@ -348,5 +348,4 @@ BEGIN_EVENT_TABLE(GalleryList, wxPanel)
   EVT_PAINT          (GalleryList::onPaint)
   EVT_SIZE           (GalleryList::onSize)
   EVT_SCROLLWIN      (GalleryList::onScroll)
-  EVT_ERASE_BACKGROUND(GalleryList::onEraseBackground)
 END_EVENT_TABLE  ()

src/gui/control/gallery_list.hpp

@@ -91,7 +91,6 @@ private:
   void onChar(wxKeyEvent& ev);
   void onFocus(wxFocusEvent&);
   void onPaint(wxPaintEvent&);
-  void onEraseBackground(wxEraseEvent&) {}
   void onSize(wxSizeEvent&);
   void onScroll(wxScrollWinEvent&);
   void OnDraw(DC& dc);

src/gui/control/graph.cpp

@@ -1019,7 +1019,9 @@ void GraphContainer::add(const GraphP& graph) {
 GraphControl::GraphControl(Window* parent, int id)
   : wxControl(parent, id, wxDefaultPosition, wxDefaultSize, wxWANTS_CHARS | wxBORDER_THEME)
   , layout(GRAPH_TYPE_BAR)
-{}
+{
+  SetBackgroundStyle(wxBG_STYLE_PAINT);
+}
 
 void GraphControl::setLayout(GraphType type, bool force) {
   if (!force && graph && type == layout) return;
@@ -1208,10 +1210,9 @@ void GraphControl::onMotion(wxMouseEvent& ev) {
 }
 
 BEGIN_EVENT_TABLE(GraphControl, wxControl)
-  EVT_PAINT    (GraphControl::onPaint)
-  EVT_SIZE    (GraphControl::onSize)
-  EVT_LEFT_DOWN  (GraphControl::onMouseDown)
-  EVT_MOTION    (GraphControl::onMotion)
-  EVT_CHAR    (GraphControl::onChar)
-  EVT_ERASE_BACKGROUND(GraphControl::onEraseBackground)
+  EVT_PAINT(GraphControl::onPaint)
+  EVT_SIZE(GraphControl::onSize)
+  EVT_LEFT_DOWN(GraphControl::onMouseDown)
+  EVT_MOTION(GraphControl::onMotion)
+  EVT_CHAR(GraphControl::onChar)
 END_EVENT_TABLE  ()

src/gui/control/graph.hpp

@@ -371,7 +371,6 @@ private:
   DECLARE_EVENT_TABLE();
   
   void onPaint(wxPaintEvent&);
-  void onEraseBackground(wxEraseEvent&) {}
   void onSize (wxSizeEvent&);
   void onMouseDown(wxMouseEvent& ev);
   void onMotion(wxMouseEvent& ev);