diff --git a/runelite-api/src/main/java/net/runelite/api/events/WidgetOpened.java b/runelite-api/src/main/java/net/runelite/api/events/WidgetOpened.java
new file mode 100644
index 0000000000..8ad22dead2
--- /dev/null
+++ b/runelite-api/src/main/java/net/runelite/api/events/WidgetOpened.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2018, Adam <Adam@sigterm.info>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.api.events;
+
+import lombok.Data;
+
+@Data
+public class WidgetOpened
+{
+	private int parentId;
+	private int groupId;
+	private int autoClose;
+}
diff --git a/runelite-mixins/src/main/java/net/runelite/mixins/RSClientMixin.java b/runelite-mixins/src/main/java/net/runelite/mixins/RSClientMixin.java
index 3527bb3c47..1b5c8dd827 100644
--- a/runelite-mixins/src/main/java/net/runelite/mixins/RSClientMixin.java
+++ b/runelite-mixins/src/main/java/net/runelite/mixins/RSClientMixin.java
@@ -63,6 +63,7 @@ import net.runelite.api.events.MapRegionChanged;
 import net.runelite.api.events.PlayerMenuOptionsChanged;
 import net.runelite.api.events.ResizeableChanged;
 import net.runelite.api.events.VarbitChanged;
+import net.runelite.api.events.WidgetOpened;
 import net.runelite.api.mixins.Copy;
 import net.runelite.api.mixins.FieldHook;
 import net.runelite.api.mixins.Inject;
@@ -505,17 +506,23 @@ public abstract class RSClientMixin implements RSClient
 	}
 
 	@Copy("openWidget")
-	public static WidgetNode rs$openWidget(int parentHash, int widgetId, int autoClose)
+	public static WidgetNode rs$openWidget(int parentId, int groupId, int autoClose)
 	{
 		throw new RuntimeException();
 	}
 
 	@Replace("openWidget")
-	public static WidgetNode rl$openWidget(int parentHash, int widgetId, int autoClose)
+	public static WidgetNode rl$openWidget(int parentId, int groupId, int autoClose)
 	{
 		MenuEntry[] entries = client.getMenuEntries();
-		WidgetNode widgetNode = rs$openWidget(parentHash, widgetId, autoClose);
+		WidgetNode widgetNode = rs$openWidget(parentId, groupId, autoClose);
 		client.setMenuEntries(entries);
+
+		WidgetOpened event = new WidgetOpened();
+		event.setParentId(parentId);
+		event.setGroupId(groupId);
+		event.setAutoClose(autoClose);
+		eventBus.post(event);
 		return widgetNode;
 	}