add windows implementation memo.

windows_memo.rst

@@ -0,0 +1,36 @@
+Windows memo
+=====================
+
+Size
+----------
+
+DWORD
+  32-bit unsigned integer
+DWORDLONG
+  64-bit unsigned integer
+DWORD_PTR
+  unsigned long type for pointer precision
+DWORD32
+  32-bit unsigned integer
+DWORD64
+  64-bit unsigned integer
+HALF_PTR
+  _WIN64 = int, else short
+INT
+  32-bit signed integer
+INT_PTR
+  _WIN64 = __int64 else int
+LONG
+  32-bit signed integer
+LONGLONG
+  64-bit signed integer
+LONG_PTR
+  _WIN64 = __int64 else long
+SHORT
+  16-bit integer
+SIZE_T
+  maximum number of bytes to which a pointer can point. typedef ULONG_PTR SIZE_T;
+SSIZE_T
+  signed version of SIZE_T. typedef LONG_PTR SSIZE_T;
+WORD
+  16-bit unsigned integer