diff --git a/FreeTypeSharp/FT.Constants.cs b/FreeTypeSharp/FT.Constants.cs
new file mode 100644
index 0000000..c434d18
--- /dev/null
+++ b/FreeTypeSharp/FT.Constants.cs
@@ -0,0 +1,56 @@
+namespace FreeTypeSharp
+{
+    static partial class FT
+    {
+        // glyph load target flags
+        public const int FT_LOAD_TARGET_NORMAL = (0 & 15) << 16;
+        public const int FT_LOAD_TARGET_LIGHT = (1 & 15) << 16;
+        public const int FT_LOAD_TARGET_MONO = (2 & 15) << 16;
+        public const int FT_LOAD_TARGET_LCD = (3 & 15) << 16;
+        public const int FT_LOAD_TARGET_LCD_V = (4 & 15) << 16;
+
+        // opentype validation flags
+        public const uint FT_VALIDATE_BASE = 0x0100;
+        public const uint FT_VALIDATE_GDEF = 0x0200;
+        public const uint FT_VALIDATE_GPOS = 0x0400;
+        public const uint FT_VALIDATE_GSUB = 0x0800;
+        public const uint FT_VALIDATE_JSTF = 0x1000;
+        public const uint FT_VALIDATE_MATH = 0x2000;
+        public const uint FT_VALIDATE_OT = (FT_VALIDATE_BASE | FT_VALIDATE_GDEF | FT_VALIDATE_GPOS | FT_VALIDATE_GSUB | FT_VALIDATE_JSTF | FT_VALIDATE_MATH);
+
+        // truetype validation flags
+        public const uint FT_VALIDATE_feat = 0x4000 << 0;
+        public const uint FT_VALIDATE_mort = 0x4000 << 1;
+        public const uint FT_VALIDATE_morx = 0x4000 << 2;
+        public const uint FT_VALIDATE_bsln = 0x4000 << 3;
+        public const uint FT_VALIDATE_just = 0x4000 << 4;
+        public const uint FT_VALIDATE_kern = 0x4000 << 5;
+        public const uint FT_VALIDATE_opbd = 0x4000 << 6;
+        public const uint FT_VALIDATE_trak = 0x4000 << 7;
+        public const uint FT_VALIDATE_prop = 0x4000 << 8;
+        public const uint FT_VALIDATE_lcar = 0x4000 << 9;
+        public const uint FT_VALIDATE_GX = (FT_VALIDATE_feat | FT_VALIDATE_mort | FT_VALIDATE_morx | FT_VALIDATE_bsln | FT_VALIDATE_just | FT_VALIDATE_kern | FT_VALIDATE_opbd | FT_VALIDATE_trak | FT_VALIDATE_prop | FT_VALIDATE_lcar);
+
+        // classic kern validation flags
+        public const uint FT_VALIDATE_MS = 0x4000 << 0;
+        public const uint FT_VALIDATE_APPLE = 0x4000 << 1;
+        public const uint FT_VALIDATE_CKERN = (FT_VALIDATE_MS | FT_VALIDATE_APPLE);
+
+        // subglyph flags
+        public const uint FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS = 1;
+        public const uint FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES = 2;
+        public const uint FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID = 4;
+        public const uint FT_SUBGLYPH_FLAG_SCALE = 8;
+        public const uint FT_SUBGLYPH_FLAG_XY_SCALE = 0x40;
+        public const uint FT_SUBGLYPH_FLAG_2X2 = 0x80;
+        public const uint FT_SUBGLYPH_FLAG_USE_MY_METRICS = 0x200;
+
+        // embedding types
+        public const ushort FT_FSTYPE_INSTALLABLE_EMBEDDING = 0x0000;
+        public const ushort FT_FSTYPE_RESTRICTED_LICENSE_EMBEDDING = 0x0002;
+        public const ushort FT_FSTYPE_PREVIEW_AND_PRINT_EMBEDDING = 0x0004;
+        public const ushort FT_FSTYPE_EDITABLE_EMBEDDING = 0x0008;
+        public const ushort FT_FSTYPE_NO_SUBSETTING = 0x0100;
+        public const ushort FT_FSTYPE_BITMAP_EMBEDDING_ONLY = 0x0200;
+    }
+}
\ No newline at end of file
diff --git a/FreeTypeSharp/DllMap.cs b/FreeTypeSharp/FT.DllMap.cs
similarity index 100%
rename from FreeTypeSharp/DllMap.cs
rename to FreeTypeSharp/FT.DllMap.cs