diff --git a/Source/ResourceEditor.cpp b/Source/ResourceEditor.cpp
index 1145a8aa..44952ddd 100644
--- a/Source/ResourceEditor.cpp
+++ b/Source/ResourceEditor.cpp
@@ -16,7 +16,7 @@
 
 #include "ResourceEditor.h"
 #include "util.h"
-#include <time.h>
+#include "winchar.h"
 #include <queue>
 using namespace std;
 
@@ -555,7 +555,7 @@ CResourceDirectory* CResourceEditor::ScanDirectory(PRESOURCE_DIRECTORY rdRoot, P
 
       size_t nameSize = ConvertEndianness(rds->Length);
       szName = new WCHAR[nameSize+1];
-      wcsncpy(szName, rds->NameString, nameSize);
+      winchar_strncpy(szName, rds->NameString, nameSize);
       szName[nameSize] = 0;
     }
     // Else, set the name to this entry's id
@@ -664,7 +664,7 @@ void CResourceEditor::WriteRsrcSec(BYTE* pbRsrcSec) {
     PMY_IMAGE_RESOURCE_DIRECTORY_ENTRY(cRDirE->m_dwWrittenAt)->NameString.NameOffset = ConvertEndianness(DWORD(seeker) - DWORD(pbRsrcSec));
 
     WCHAR* szName = cRDirE->GetName();
-    WORD iLen = wcslen(szName) + 1;
+    WORD iLen = winchar_strlen(szName) + 1;
 
     *(WORD*)seeker = ConvertEndianness(iLen);
     seeker += sizeof(WORD);
@@ -777,7 +777,7 @@ void CResourceDirectory::AddEntry(CResourceDirectoryEntry* entry) {
     WCHAR* szEntName = entry->GetName();
     for (i = 0; i < m_rdDir.NumberOfNamedEntries; i++) {
       WCHAR* szName = m_vEntries[i]->GetName();
-      int cmp = wcscmp(szName, szEntName);
+      int cmp = winchar_strcmp(szName, szEntName);
       delete [] szName;
       if (cmp == 0) {
         delete [] szEntName;
@@ -822,14 +822,14 @@ int CResourceDirectory::Find(WCHAR* szName) {
     return Find((WORD) (DWORD) szName);
   else
     if (szName[0] == '#')
-      return Find(WORD(wcstol(szName + 1, NULL, 10)));
+      return Find(WORD(winchar_stoi(szName + 1)));
 
   for (unsigned int i = 0; i < m_vEntries.size(); i++) {
     if (!m_vEntries[i]->HasName())
       continue;
 
     WCHAR* szEntName = m_vEntries[i]->GetName();
-    int cmp = wcscmp(szName, szEntName);
+    int cmp = winchar_strcmp(szName, szEntName);
     delete [] szEntName;
 
     if (!cmp)
@@ -901,8 +901,8 @@ CResourceDirectoryEntry::CResourceDirectoryEntry(WCHAR* szName, CResourceDirecto
   }
   else {
     m_bHasName = true;
-    m_szName = new WCHAR[wcslen(szName)+1];
-    wcscpy(m_szName, szName);
+    m_szName = new WCHAR[winchar_strlen(szName)+1];
+    winchar_strcpy(m_szName, szName);
   }
   m_bIsDataDirectory = true;
   m_rdSubDir = rdSubDir;
@@ -916,8 +916,8 @@ CResourceDirectoryEntry::CResourceDirectoryEntry(WCHAR* szName, CResourceDataEnt
   }
   else {
     m_bHasName = true;
-    m_szName = new WCHAR[wcslen(szName)+1];
-    wcscpy(m_szName, szName);
+    m_szName = new WCHAR[winchar_strlen(szName)+1];
+    winchar_strcpy(m_szName, szName);
   }
   m_bIsDataDirectory = false;
   m_rdeData = rdeData;
@@ -941,13 +941,13 @@ WCHAR* CResourceDirectoryEntry::GetName() {
   if (!m_bHasName)
     return 0;
   WCHAR* szName = 0;
-  szName = new WCHAR[wcslen(m_szName)+1];
-  wcscpy(szName, m_szName);
+  szName = new WCHAR[winchar_strlen(m_szName)+1];
+  winchar_strcpy(szName, m_szName);
   return szName;
 }
 
 int CResourceDirectoryEntry::GetNameLength() {
-  return wcslen(m_szName);
+  return winchar_strlen(m_szName);
 }
 
 WORD CResourceDirectoryEntry::GetId() {
diff --git a/Source/SConscript b/Source/SConscript
index d8521220..9dc9a7f9 100644
--- a/Source/SConscript
+++ b/Source/SConscript
@@ -23,6 +23,7 @@ makensis_files = Split("""
 	strlist.cpp
 	tokens.cpp
 	util.cpp
+	winchar.cpp
 	writer.cpp
 """)
 
diff --git a/Source/winchar.cpp b/Source/winchar.cpp
new file mode 100644
index 00000000..56b98e31
--- /dev/null
+++ b/Source/winchar.cpp
@@ -0,0 +1,102 @@
+#include "Platform.h"
+#include "winchar.h"
+#include "util.h"
+
+#include <stdexcept>
+
+using std::runtime_error;
+
+WCHAR *winchar_fromansi(const char* s) {
+  int l = MultiByteToWideChar(CP_ACP, 0, s, -1, 0, 0);
+  if (l == 0)
+    throw runtime_error("Unicode conversion failed");
+
+  WCHAR *ws = new WCHAR[l + 1];
+
+  if (MultiByteToWideChar(CP_ACP, 0, s, -1, ws, l + 1) == 0)
+    throw runtime_error("Unicode conversion failed");
+
+  return ws;
+}
+
+char *winchar_toansi(const WCHAR* ws)
+{
+  int l = WideCharToMultiByte(CP_ACP, 0, ws, -1, 0, 0, 0, 0);
+  if (l == 0)
+    throw runtime_error("Unicode conversion failed");
+
+  char *s = new char[l + 1];
+
+  if (WideCharToMultiByte(CP_ACP, 0, ws, -1, s, l + 1, 0, 0) == 0)
+    throw runtime_error("Unicode conversion failed");
+
+  return s;
+}
+
+WCHAR *winchar_strcpy(WCHAR *ws1, const WCHAR *ws2)
+{
+  WCHAR *ret = ws1;
+
+  while (*ws2)
+  {
+    *ws1++ = *ws2++;
+  }
+
+  *ws1 = 0;
+
+  return ret;
+}
+
+WCHAR *winchar_strncpy(WCHAR *ws1, const WCHAR *ws2, size_t n)
+{
+  WCHAR *ret = ws1;
+
+  while (n && *ws2)
+  {
+    *ws1++ = *ws2++;
+    n--;
+  }
+
+  while (n--)
+  {
+    *ws1++ = 0;
+  }
+
+  return ret;
+}
+
+size_t winchar_strlen(WCHAR *ws)
+{
+  size_t len = 0;
+
+  while (*ws++)
+  {
+    len++;
+  }
+
+  return len;
+}
+
+int winchar_strcmp(const WCHAR *ws1, const WCHAR *ws2)
+{
+  WCHAR diff = 0;
+
+  do
+  {
+    diff = *ws1 - *ws2;
+  }
+  while (*ws1++ && *ws2++);
+
+  return static_cast<int>(diff);
+}
+
+int winchar_stoi(const WCHAR *ws)
+{
+  char *s = winchar_toansi(ws);
+
+  int ret = atoi(s);
+
+  delete [] s;
+
+  return ret;
+}
diff --git a/Source/winchar.h b/Source/winchar.h
new file mode 100644
index 00000000..53e5046e
--- /dev/null
+++ b/Source/winchar.h
@@ -0,0 +1,9 @@
+#include "Platform.h"
+
+WCHAR *winchar_fromansi(const char* s);
+char *winchar_toansi(const WCHAR* ws);
+WCHAR *winchar_strcpy(WCHAR *ws1, const WCHAR *ws2);
+WCHAR *winchar_strncpy(WCHAR *ws1, const WCHAR *ws2, size_t n);
+size_t winchar_strlen(WCHAR *ws);
+int winchar_strcmp(const WCHAR *ws1, const WCHAR *ws2);
+int winchar_stoi(const WCHAR *ws);