corrected the direction of comparisons between wxString and char/wxChar strings

[wxWidgets.git] / include / wx / strconv.h

diff --git a/include/wx/strconv.h b/include/wx/strconv.h
index ba28c8a81ab8792f24578b14d76420418b49155f..c25a05017c303f082eea4b3b516000a4d941a41b 100644 (file)
--- a/include/wx/strconv.h
+++ b/include/wx/strconv.h
@@ -14,7 +14,7 @@
 #define _WX_STRCONV_H_
 
 #include "wx/defs.h"
-#include "wx/wxchar.h"
+#include "wx/chartype.h"
 #include "wx/buffer.h"
 
 #ifdef __DIGITALMARS__
@@ -521,10 +521,25 @@ extern WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent;
 #if wxUSE_UNICODE
     #define wxConvertWX2MB(s)   wxConvCurrent->cWX2MB(s)
     #define wxConvertMB2WX(s)   wxConvCurrent->cMB2WX(s)
+
+    // these functions should be used when the conversions really, really have
+    // to succeed (usually because we pass their results to a standard C
+    // function which would crash if we passed NULL to it), so these functions
+    // always return a valid pointer if their argument is non-NULL
+
+    // this function safety is achieved by trying wxConvLibc first, wxConvUTF8
+    // next if it fails and, finally, wxConvISO8859_1 which always succeeds
+    extern WXDLLIMPEXP_BASE wxWCharBuffer wxSafeConvertMB2WX(const char *s);
+
+    // this function uses wxConvLibc and wxConvUTF8(MAP_INVALID_UTF8_TO_OCTAL)
+    // if it fails
+    extern WXDLLIMPEXP_BASE wxCharBuffer wxSafeConvertWX2MB(const wchar_t *ws);
 #else // ANSI
     // no conversions to do
     #define wxConvertWX2MB(s)   (s)
     #define wxConvertMB2WX(s)   (s)
+    #define wxSafeConvertMB2WX(s) (s)
+    #define wxSafeConvertWX2MB(s) (s)
 #endif // Unicode/ANSI
 
 #endif // _WX_STRCONV_H_