First commit of Direct3D extension.

src/java/org/lwjgl/d3d/Rectangle.java

@@ -0,0 +1,51 @@
+package org.lwjgl.d3d;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+//From RECT
+public class Rectangle {
+    public long left; 
+    public long top; 
+    public long right; 
+    public long bottom; 
+    private static final int RECTANGLE_BYTE_SIZE = 16;
+
+    private ByteBuffer buffer;
+    
+    public Rectangle() {
+        buffer = ByteBuffer.allocateDirect(RECTANGLE_BYTE_SIZE);
+        buffer.order(ByteOrder.nativeOrder());
+        buffer.clear();
+    }
+    public ByteBuffer getEmptyBuffer() {
+        buffer.rewind();
+        buffer.clear();
+        
+        return buffer;
+    }
+
+    public ByteBuffer getBuffer() {
+        buffer.rewind();
+        buffer.putInt((int)left);
+        buffer.putInt((int)top);
+        buffer.putInt((int)right);
+        buffer.putInt((int)bottom);
+
+        return buffer;
+    }
+    public void setBuffer(ByteBuffer buffer) {
+        buffer.rewind();
+        left = buffer.getInt();
+        top = buffer.getInt();
+        right = buffer.getInt();
+        bottom = buffer.getInt();
+    }
+    public String toString() {
+        return
+        "  left = " + left +
+        "   top = " + top +
+        " right = " + right +
+        "bottom = " + bottom;
+    }
+}