update minimum GTK2 version requirement to 2.6

[wxWidgets.git] / interface / wx / dcbuffer.h

diff --git a/interface/wx/dcbuffer.h b/interface/wx/dcbuffer.h
index ef03428a370cf6ee73501e69f935f3e73c9e2fb8..93492e4b5a9457b05f2826e1c2f22e7733e8746b 100644 (file)
--- a/interface/wx/dcbuffer.h
+++ b/interface/wx/dcbuffer.h
@@ -6,11 +6,24 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+// Assumes the buffer bitmap covers the entire scrolled window,
+// and prepares the window DC accordingly
+#define wxBUFFER_VIRTUAL_AREA       0x01
+
+// Assumes the buffer bitmap only covers the client area;
+// does not prepare the window DC
+#define wxBUFFER_CLIENT_AREA        0x02
+
+// Set when not using specific buffer bitmap. Note that this
+// is private style and not returned by GetStyle.
+#define wxBUFFER_USES_SHARED_BUFFER 0x04
+
+
 /**
     @class wxBufferedDC
 
     This class provides a simple way to avoid flicker: when drawing on it,
-    everything is infact first drawn on an in-memory buffer (a wxBitmap) and
+    everything is in fact first drawn on an in-memory buffer (a wxBitmap) and
     then copied to the screen, using the associated wxDC, only once, when this
     object is destroyed. wxBufferedDC itself is typically associated with
     wxClientDC, if you want to use it in your @c EVT_PAINT handler, you should
@@ -115,12 +128,12 @@ public:
     This wxDC derivative can be used inside of an @c EVT_PAINT() event handler
     to achieve double-buffered drawing. Just use this class instead of
     wxPaintDC and make sure wxWindow::SetBackgroundStyle() is called with
-    wxBG_STYLE_CUSTOM somewhere in the class initialization code, and that's
+    wxBG_STYLE_PAINT somewhere in the class initialization code, and that's
     all you have to do to (mostly) avoid flicker.
 
     The difference between wxBufferedPaintDC and this class is that this class
     won't double-buffer on platforms which have native double-buffering
-    already, avoiding any unneccessary buffering to avoid flicker.
+    already, avoiding any unnecessary buffering to avoid flicker.
 
     wxAutoBufferedPaintDC is simply a typedef of wxPaintDC on platforms that
     have native double-buffering, otherwise, it is a typedef of
@@ -148,7 +161,7 @@ public:
     This is a subclass of wxBufferedDC which can be used inside of an
     @c EVT_PAINT() event handler to achieve double-buffered drawing. Just use
     this class instead of wxPaintDC and make sure
-    wxWindow::SetBackgroundStyle() is called with wxBG_STYLE_CUSTOM somewhere
+    wxWindow::SetBackgroundStyle() is called with wxBG_STYLE_PAINT somewhere
     in the class initialization code, and that's all you have to do to (mostly)
     avoid flicker. The only thing to watch out for is that if you are using
     this class together with wxScrolled, you probably do @b not want to call