diff --git a/src/lib.rs b/src/lib.rs
index bacef7f..3955f3b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1070,3 +1070,74 @@ impl MessageBehavior for VmcExtSettingColor {
         return Ok(VmcExtSettingColor { color });
     }
 }
+
+struct VmcExtSettingWin {
+    is_top_most: bool,
+    is_transparent: bool,
+    window_click_through: i32,
+    hide_border: i32,
+}
+
+impl MessageBehavior for VmcExtSettingWin {
+    fn to_osc_message(&self) -> OscMessage {
+        let mut args: Vec<OscType>;
+        if self.is_top_most {
+            args = vec![OscType::from(1)];
+        } else {
+            args = vec![OscType::from(0)];
+        }
+        if self.is_transparent {
+            args.push(OscType::from(1));
+        } else {
+            args.push(OscType::from(0));
+        }
+        args.append(&mut vec![
+            OscType::from(self.window_click_through),
+            OscType::from(self.hide_border),
+        ]);
+        return OscMessage {
+            addr: String::from("/VMC/Ext/Setting/Win"),
+            args,
+        };
+    }
+    fn from_osc_message(msg: OscMessage) -> Result<Self, String> {
+        if msg.args.len() != 4 {
+            return Err(String::from("arg count invalid"));
+        }
+        let mut result = Self {
+            is_top_most: false,
+            is_transparent: false,
+            window_click_through: -1,
+            hide_border: -1,
+        };
+        match msg.args[0] {
+            OscType::Int(i) => {
+                if i == 1 {
+                    result.is_top_most = true;
+                } else if i != 0 {
+                    return Err(String::from("arg value invalid"));
+                }
+            }
+            _ => return Err(String::from("arg type invalid")),
+        }
+        match msg.args[1] {
+            OscType::Int(i) => {
+                if i == 1 {
+                    result.is_transparent = true;
+                } else if i != 0 {
+                    return Err(String::from("arg value invalid"));
+                }
+            }
+            _ => return Err(String::from("arg type invalid")),
+        }
+        match msg.args[2] {
+            OscType::Int(i) => result.window_click_through = i,
+            _ => return Err(String::from("arg type invalid")),
+        }
+        match msg.args[2] {
+            OscType::Int(i) => result.hide_border = i,
+            _ => return Err(String::from("arg type invalid")),
+        }
+        return Ok(result);
+    }
+}