use wxEmptyString as default value to return from GetAttribute()

[wxWidgets.git] / interface / dcscreen.h

diff --git a/interface/dcscreen.h b/interface/dcscreen.h
index e85c7d16fd75540c0674d241dccbbd8c292ea384..17bc9cec98e529bd772babfd4541aee1a0f3f727 100644 (file)
--- a/interface/dcscreen.h
+++ b/interface/dcscreen.h
@@ -1,6 +1,6 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        dcscreen.h
-// Purpose:     documentation for wxScreenDC class
+// Purpose:     interface of wxScreenDC
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
 // Licence:     wxWindows license
@@ -17,8 +17,7 @@
     @library{wxcore}
     @category{dc}
 
-    @seealso
-    wxDC, wxMemoryDC, wxPaintDC, wxClientDC, wxWindowDC
+    @see wxDC, wxMemoryDC, wxPaintDC, wxClientDC, wxWindowDC
 */
 class wxScreenDC : public wxDC
 {
@@ -30,7 +29,6 @@ public:
 
     /**
         Use this in conjunction with StartDrawingOnTop().
-        
         This function destroys the temporary window created to implement on-top drawing
         (X only).
     */
@@ -43,30 +41,27 @@ public:
         this,
         some window systems (such as X) only allow drawing to take place underneath
         other windows.
-        
         By using the first form of this function, an application is specifying that
         the area that will be drawn on coincides with the given window.
-        
         By using the second form, an application can specify an area of the screen
         which is to be drawn on. If @NULL is passed, the whole screen is available.
-        
         It is recommended that an area of the screen is specified because with large
         regions,
         flickering effects are noticeable when destroying the temporary transparent
         window used
         to implement this feature.
-        
         You might use this pair of functions when implementing a drag feature, for
         example
         as in the wxSplitterWindow implementation.
-        
+
         @remarks This function is probably obsolete since the X implementations
-                   allow drawing directly on the screen now. However,
-                   the fact that this function allows the screen to be
-                   refreshed afterwards, may be useful to some
-                   applications.
+                 allow drawing directly on the screen now. However, the
+                 fact that this function allows the screen to be
+                 refreshed afterwards, may be useful to some
+                 applications.
     */
     bool StartDrawingOnTop(wxWindow* window);
-    bool StartDrawingOnTop(wxRect* rect = @NULL);
+    bool StartDrawingOnTop(wxRect* rect = NULL);
     //@}
 };
+