compiles for windoze

src/pcsc.hxx

@@ -34,20 +34,29 @@
 #include <string>
 
 #ifdef WIN32
+  #undef UNICODE
   #include <WinSCard.h>
+  #undef ERROR
   #ifndef MAX_ATR_SIZE
     #define MAX_ATR_SIZE 33
   #endif
   namespace pcsc {
-    //! stupid windows needs std::wstring
-    inline std::wstring strconv(std::string s) {
-      return std::wstring(s.begin(), s.end());
-    }
-    inline std::string strconv(std::wstring s) {
-      return std::string(s.begin(), s.end());
-    }
-    typedef wchar_t char_t;
-    typedef std::wstring string;
+    #ifdef UNICODE
+      inline std::wstring strconv(std::string s) {
+        return std::wstring(s.begin(), s.end());
+      }
+      inline std::string strconv(std::wstring s) {
+        return std::string(s.begin(), s.end());
+      }
+      typedef wchar_t char_t;
+      typedef std::wstring string;
+    #else
+      inline const std::string& strconv(const std::string& s) {
+        return s;
+      }
+      typedef char char_t;
+      typedef std::string string;
+    #endif
   }
 #else
   #include <PCSC/pcsclite.h>