Upgrade WX to r74856, mainly to support @2x.

Externals/wxWidgets3/include/wx/msw/dib.h

@@ -4,7 +4,6 @@
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     03.03.03 (replaces the old file with the same name)
-// RCS-ID:      $Id: dib.h 65959 2010-10-30 23:50:50Z VZ $
 // Copyright:   (c) 1997-2003 wxWidgets team
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
@@ -12,13 +11,16 @@
 #ifndef _WX_MSW_DIB_H_
 #define _WX_MSW_DIB_H_
 
-class WXDLLIMPEXP_FWD_CORE wxBitmap;
 class WXDLLIMPEXP_FWD_CORE wxPalette;
 
 #include "wx/msw/private.h"
 
 #if wxUSE_WXDIB
 
+#ifdef __WXMSW__
+    #include "wx/bitmap.h"
+#endif // __WXMSW__
+
 // ----------------------------------------------------------------------------
 // wxDIB: represents a DIB section
 // ----------------------------------------------------------------------------
@@ -37,9 +39,11 @@ public:
     wxDIB(int width, int height, int depth)
         { Init(); (void)Create(width, height, depth); }
 
+#ifdef __WXMSW__
     // create a DIB from the DDB
     wxDIB(const wxBitmap& bmp)
         { Init(); (void)Create(bmp); }
+#endif // __WXMSW__
 
     // create a DIB from the Windows DDB
     wxDIB(HBITMAP hbmp)
@@ -53,7 +57,9 @@ public:
 
     // same as the corresponding ctors but with return value
     bool Create(int width, int height, int depth);
+#ifdef __WXMSW__
     bool Create(const wxBitmap& bmp) { return Create(GetHbitmapOf(bmp)); }
+#endif
     bool Create(HBITMAP hbmp);
     bool Load(const wxString& filename);