X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1777b9bbf4573dabecf4a3256d0d3c2c0c2a3fdf..4fdfb5587f4d6f704336b57bae57cc0268f8768c:/include/wx/wxprec.h

diff --git a/include/wx/wxprec.h b/include/wx/wxprec.h
index c79a641ffe..0bfccf8d0d 100644
--- a/include/wx/wxprec.h
+++ b/include/wx/wxprec.h
@@ -9,11 +9,12 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#include "wx/setup.h"   // always include this file (under Unix it's generated by configure)
-#include "wx/defs.h"    // compiler definitions
+// compiler detection; includes setup.h
+#include "wx/defs.h"
 
-// check if to use precompiled headers
-#if ((defined(__BORLANDC__) || defined(__VISUALC__) || defined(__WATCOMC__)) && defined(__WXMSW__)) || defined(__WXPM__)
+// check if to use precompiled headers: do it for most Windows compilers unless
+// explicitly disabled by defining NOPCH
+#if ((defined(__BORLANDC__) || defined(__VISUALC__) || defined(__WATCOMC__)) && defined(__WXMSW__)) || defined(__VISAGECPP__)
     #if !defined(NOPCH)
         #define WX_PRECOMP
     #endif
@@ -21,24 +22,22 @@
 
 // For some reason, this must be defined for common dialogs to work.
 #ifdef __WATCOMC__
-#define INCLUDE_COMMDLG_H  1
+    #define INCLUDE_COMMDLG_H  1
 #endif
 
-// include the wx definitions
 #ifdef WX_PRECOMP
 
-#ifdef __WXMSW__
-#include <windows.h>
-#include "wx/msw/winundef.h"
-#endif
+// include <wx/wxchar.h> first to ensure that UNICODE macro is correctly set
+// _before_ including <windows.h>
+#include "wx/wxchar.h"
 
-#ifdef __WXPM__
-#define INCL_OS2
-#include <os2.h>
+// include standard Windows headers
+#if defined(__WXMSW__) && !wxUSE_MFC
+    #include <windows.h>
+    #include "wx/msw/winundef.h"
 #endif
 
+// include the most common wx headers
 #include "wx/wx.h"
 
-
 #endif // WX_PRECOMP
-