X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/504f8052fd01fdc49848d29a5ade7b061f419b81..0bbe61b8c18a1795189f0cf73cc61c14a0fb846d:/src/mac/corefoundation/cfstring.cpp

diff --git a/src/mac/corefoundation/cfstring.cpp b/src/mac/corefoundation/cfstring.cpp
index 9ac251a09f..dbe52f6e57 100644
--- a/src/mac/corefoundation/cfstring.cpp
+++ b/src/mac/corefoundation/cfstring.cpp
@@ -610,12 +610,23 @@ wxCFStringRef::wxCFStringRef( const wxString &st , wxFontEncoding WXUNUSED_IN_UN
             (UniChar*)str.wc_str() , str.Len() ) );
 #else
         wxMBConvUTF16 converter ;
-        size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 ) ;
-        UniChar *unibuf = new UniChar[ unicharlen / sizeof(UniChar) + 1 ] ;
-        converter.WC2MB( (char*)unibuf , str.wc_str() , unicharlen ) ;
-        m_cfs = CFStringCreateWithCharacters( kCFAllocatorDefault ,
-            unibuf , unicharlen / sizeof(UniChar) ) ;
-        delete[] unibuf ;
+        size_t unicharbytes = converter.FromWChar( NULL , 0 , str.wc_str() , str.Length() ) ;
+        wxASSERT( unicharbytes != wxCONV_FAILED );
+        if ( unicharbytes == wxCONV_FAILED )
+        {
+            // create an empty string
+            reset( wxCFRetain( CFSTR("") ) );
+        }
+        else
+        {
+            // unicharbytes: number of bytes needed for UTF-16 encoded string (without terminating null)
+            // unichars: number of UTF-16 characters (without terminating null)
+            size_t unichars = unicharbytes /  sizeof(UniChar) ;
+            UniChar *unibuf = new UniChar[ unichars ] ;
+            converter.FromWChar( (char*)unibuf , unicharbytes , str.wc_str() , str.Length() ) ;
+            reset( CFStringCreateWithCharacters( kCFAllocatorDefault , unibuf , unichars ) ) ;
+            delete[] unibuf ;
+        }
 #endif
 #else // not wxUSE_UNICODE
         reset( CFStringCreateWithCString( kCFAllocatorSystemDefault , str.c_str() ,