Fix up NSSlider code to not use class posing and instantiate the proper type (now...

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

diff --git a/include/wx/string.h b/include/wx/string.h
index 0462f4f2e851ef67bd1e67fa4876a0582f75e4fe..7345c36d17daf2103951111fc402c17ee7ccb547 100644 (file)
--- a/include/wx/string.h
+++ b/include/wx/string.h
@@ -59,7 +59,7 @@
 #include "wx/stringops.h"
 #include "wx/unichar.h"
 
-class WXDLLIMPEXP_BASE wxString;
+class WXDLLIMPEXP_FWD_BASE wxString;
 
 // unless this symbol is predefined to disable the compatibility functions, do
 // use them
@@ -276,7 +276,7 @@ private:
     size_t m_offset;
     bool m_owned;
 
-    friend class WXDLLIMPEXP_BASE wxString;
+    friend class WXDLLIMPEXP_FWD_BASE wxString;
 };
 
 // ----------------------------------------------------------------------------
@@ -652,13 +652,13 @@ public:
           /* for internal wxString use only: */                             \
           underlying_iterator impl() const { return m_cur; }                \
                                                                             \
-          friend class WXDLLIMPEXP_BASE wxString;                           \
-          friend class WXDLLIMPEXP_BASE wxCStrData;                         \
+          friend class wxString;                                            \
+          friend class wxCStrData;                                          \
                                                                             \
       private:                                                              \
           underlying_iterator m_cur
 
-  class WXDLLIMPEXP_BASE const_iterator;
+  class WXDLLIMPEXP_FWD_BASE const_iterator;
 
 #if wxUSE_UNICODE_UTF8
   // NB: In UTF-8 build, (non-const) iterator needs to keep reference
@@ -1202,17 +1202,20 @@ public:
     // implicit conversion to C string
     operator wxCStrData() const { return c_str(); }
 
-    // these operators conflict with operators for conversion to std::string,
-    // so they must be disabled in STL build:
+    // the first two operators conflict with operators for conversion to
+    // std::string and they must be disabled in STL build; the next one only
+    // makes sense if conversions to char* are also defined and not defining it
+    // in STL build also helps us to get more clear error messages for the code
+    // which relies on implicit conversion to char* in STL build
 #if !wxUSE_STL
     operator const char*() const { return c_str(); }
     operator const wchar_t*() const { return c_str(); }
-#endif
 
     // implicit conversion to untyped pointer for compatibility with previous
     // wxWidgets versions: this is the same as conversion to const char * so it
     // may fail!
     operator const void*() const { return c_str(); }
+#endif // wxUSE_STL
 
     // identical to c_str(), for MFC compatibility
     const wxCStrData GetData() const { return c_str(); }
@@ -1235,18 +1238,25 @@ public:
     // the behaviour of these functions with the strings containing anything
     // else than 7 bit ASCII characters is undefined, use at your own risk.
 #if wxUSE_UNICODE
-    static wxString FromAscii(const char *ascii, size_t len);  // string
-    static wxString FromAscii(const char *ascii);  // string
-    static wxString FromAscii(const char ascii);   // char
+    static wxString FromAscii(const char *ascii, size_t len);
+    static wxString FromAscii(const char *ascii);
+    static wxString FromAscii(char ascii);
     const wxCharBuffer ToAscii() const;
 #else // ANSI
     static wxString FromAscii(const char *ascii) { return wxString( ascii ); }
     static wxString FromAscii(const char *ascii, size_t len)
         { return wxString( ascii, len ); }
-    static wxString FromAscii(const char ascii) { return wxString( ascii ); }
+    static wxString FromAscii(char ascii) { return wxString( ascii ); }
     const char *ToAscii() const { return c_str(); }
 #endif // Unicode/!Unicode
 
+    // also provide unsigned char overloads as signed/unsigned doesn't matter
+    // for 7 bit ASCII characters
+    static wxString FromAscii(const unsigned char *ascii)
+        { return FromAscii((const char *)ascii); }
+    static wxString FromAscii(const unsigned char *ascii, size_t len)
+        { return FromAscii((const char *)ascii, len); }
+
     // conversion to/from UTF-8:
 #if wxUSE_UNICODE_UTF8
     static wxString FromUTF8(const char *utf8)
@@ -2627,11 +2637,11 @@ private:
 
   wxStringIteratorNodeHead m_iterators;
 
-  friend class WXDLLIMPEXP_BASE wxStringIteratorNode;
-  friend class WXDLLIMPEXP_BASE wxUniCharRef;
+  friend class WXDLLIMPEXP_FWD_BASE wxStringIteratorNode;
+  friend class WXDLLIMPEXP_FWD_BASE wxUniCharRef;
 #endif // wxUSE_UNICODE_UTF8
 
-  friend class WXDLLIMPEXP_BASE wxCStrData;
+  friend class WXDLLIMPEXP_FWD_BASE wxCStrData;
   friend class wxImplStringBuffer;
   friend class wxImplStringBufferLength;
 };
@@ -2686,16 +2696,7 @@ inline wxString operator+(wchar_t ch, const wxString& string)
     { return wxUniChar(ch) + string; }
 
 
-#if wxUSE_STL_BASED_WXSTRING
-    // return an empty wxString (not very useful with wxUSE_STL == 1)
-    inline const wxString wxGetEmptyString() { return wxString(); }
-#else // !wxUSE_STL_BASED_WXSTRING
-    // return an empty wxString (more efficient than wxString() here)
-    inline const wxString& wxGetEmptyString()
-    {
-        return *(wxString *)&wxEmptyString;
-    }
-#endif // wxUSE_STL_BASED_WXSTRING/!wxUSE_STL_BASED_WXSTRING
+#define wxGetEmptyString() wxString()
 
 // ----------------------------------------------------------------------------
 // wxStringBuffer: a tiny class allowing to get a writable pointer into string
@@ -3010,7 +3011,7 @@ inline wxCStrData::wxCStrData(const wxCStrData& data)
 inline wxCStrData::~wxCStrData()
 {
     if ( m_owned )
-        delete m_str;
+        delete wx_const_cast(wxString*, m_str); // cast to silence warnings
 }
 
 // simple cases for AsChar() and AsWChar(), the complicated ones are