add ColorDropper

src/Shared/HandyControl_Shared/Data/Args/MouseHookEventArgs.cs

@@ -0,0 +1,12 @@
+using System;
+using HandyControl.Tools.Interop;
+
+namespace HandyControl.Data
+{
+    internal class MouseHookEventArgs : EventArgs
+    {
+        public MouseHookMessageType Message { get; set; }
+
+        public NativeMethods.POINT Point { get; set; }
+    }
+}

src/Shared/HandyControl_Shared/Data/Enum/MouseHookMessageType.cs

@@ -0,0 +1,12 @@
+namespace HandyControl.Data
+{
+    public enum MouseHookMessageType
+    {
+        LeftButtonDown = 0x0201,
+        LeftButtonUp = 0x0202,
+        MouseMove = 0x0200,
+        MouseWheel = 0x020A,
+        RightButtonDown = 0x0204,
+        RightButtonUp = 0x0205
+    }
+}