Added c# unit for bgrabitmap library.

bgra_pascalscript_library/c#/BGRABitmap.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace BGRABitmapLibrary
+{
+    public class BGRABitmap
+    {
+        /* Constructors */
+
+        [DllImport("bgrabitmap")]
+        public static extern void bgraCreate(int id);
+
+        [DllImport("bgrabitmap")]
+        public static extern void bgraCreateWithSize(int id, int AWidth, int AHeight);
+
+        [DllImport("bgrabitmap")]
+        public static extern void bgraDestroy(int id);
+
+        [DllImport("bgrabitmap")]
+        public static extern int bgraGetHighestID();
+
+        /* Color */
+
+        [DllImport("bgrabitmap")]
+        public static extern long rgb(byte red, byte green, byte blue);
+
+        [DllImport("bgrabitmap")]
+        public static extern long rgba(byte red, byte green, byte blue, byte alpha);
+
+        [DllImport("bgrabitmap")]
+        public static extern byte getBlue(long AColor);
+
+        [DllImport("bgrabitmap")]
+        public static extern byte getGreen(long AColor);
+
+        [DllImport("bgrabitmap")]
+        public static extern byte getRed(long AColor);
+
+        [DllImport("bgrabitmap")]
+        public static extern byte getAlpha(long AColor);
+
+        [DllImport("bgrabitmap")]
+        public static extern long setBlue(long AColor, byte AValue);
+
+        [DllImport("bgrabitmap")]
+        public static extern long setGreen(long AColor, byte AValue);
+
+        [DllImport("bgrabitmap")]
+        public static extern long setRed(long AColor, byte AValue);
+
+        [DllImport("bgrabitmap")]
+        public static extern long setAlpha(long AColor, byte AValue);
+
+        /* Pixels */
+
+        [DllImport("bgrabitmap")]
+        public static extern void bgraFill(int id, long AColor);
+
+        [DllImport("bgrabitmap")]
+        public static extern void bgraSetPixel(int id, int x, int y, long AColor);
+
+        [DllImport("bgrabitmap")]
+        public static extern long bgraGetPixel(int id, int x, int y);
+
+        /* Files */
+
+        [DllImport("bgrabitmap")]
+        public static extern void bgraCreateFromFile(int id, [MarshalAs(UnmanagedType.LPWStr)]string AFileName);
+
+        [DllImport("bgrabitmap")]
+        public static extern void bgraSaveToFile(int id, [MarshalAs(UnmanagedType.LPWStr)]string AFileName);
+    }
+}