X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/12f5e1e78fe906050ff2fee9529476db332633f0..15fa4de377053c3c38f62593b2df941c217ea34b:/interface/wx/dcbuffer.h

diff --git a/interface/wx/dcbuffer.h b/interface/wx/dcbuffer.h
index 0e7a0f69d5..ec2bb28d70 100644
--- a/interface/wx/dcbuffer.h
+++ b/interface/wx/dcbuffer.h
@@ -3,7 +3,7 @@
 // Purpose:     interface of wxBufferedDC
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -48,9 +48,8 @@ public:
     */
     wxBufferedDC();
 
-    //@{
     /**
-        Creates a buffer for the provided @dc. Init() must not be called when
+        Creates a buffer for the provided @a dc. Init() must not be called when
         using this constructor.
 
         @param dc
@@ -60,6 +59,22 @@ public:
         @param area
             The size of the bitmap to be used for buffering (this bitmap is
             created internally when it is not given explicitly).
+        @param style
+            wxBUFFER_CLIENT_AREA to indicate that just the client area of the
+            window is buffered, or wxBUFFER_VIRTUAL_AREA to indicate that the
+            buffer bitmap covers the virtual area.
+    */
+    wxBufferedDC(wxDC* dc, const wxSize& area,
+                 int style = wxBUFFER_CLIENT_AREA);
+
+    /**
+        Creates a buffer for the provided dc. Init() must not be called when
+        using this constructor.
+
+        @param dc
+            The underlying DC: everything drawn to this object will be flushed
+            to this DC when this object is destroyed. You may pass @NULL in
+            order to just initialize the buffer, and not flush it.
         @param buffer
             Explicitly provided bitmap to be used for buffering: this is the
             most efficient solution as the bitmap doesn't have to be recreated
@@ -71,17 +86,14 @@ public:
             window is buffered, or wxBUFFER_VIRTUAL_AREA to indicate that the
             buffer bitmap covers the virtual area.
     */
-    wxBufferedDC(wxDC* dc, const wxSize& area,
+    wxBufferedDC(wxDC* dc, wxBitmap& buffer = wxNullBitmap,
                  int style = wxBUFFER_CLIENT_AREA);
-    wxBufferedDC(wxDC* dc, wxBitmap& buffer,
-                 int style = wxBUFFER_CLIENT_AREA);
-    //@}
 
     /**
         Copies everything drawn on the DC so far to the underlying DC
         associated with this object, if any.
     */
-    ~wxBufferedDC();
+    virtual ~wxBufferedDC();
 
     //@{
     /**
@@ -90,7 +102,7 @@ public:
     */
     void Init(wxDC* dc, const wxSize& area,
               int style = wxBUFFER_CLIENT_AREA);
-    void Init(wxDC* dc, wxBitmap& buffer,
+    void Init(wxDC* dc, wxBitmap& buffer = wxNullBitmap,
               int style = wxBUFFER_CLIENT_AREA);
     //@}
 };
@@ -108,7 +120,7 @@ public:
 
     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
@@ -172,6 +184,6 @@ public:
         Copies everything drawn on the DC so far to the window associated with
         this object, using a wxPaintDC.
     */
-    ~wxBufferedPaintDC();
+    virtual ~wxBufferedPaintDC();
 };