port from perforce

hgplus/bliss/Tweaky/RangeAttribute.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Tweaky
+{
+    public class RangeAttribute : Attribute
+    {
+        public RangeAttribute(float minimum, float maximum, float stepHint)
+        {
+            this.Minimum = minimum;
+            this.Maximum = maximum;
+            this.StepHint = stepHint;
+        }
+
+        public float Minimum { get; private set; }
+        public float Maximum { get; private set; }
+        public float StepHint { get; private set; }
+    }
+}