From f393547d9eef89464912ffc0041fa7959333804b Mon Sep 17 00:00:00 2001
From: Mohit Bansal <mohit1291@chitkara.edu.in>
Date: Mon, 27 Feb 2023 23:52:29 +0530
Subject: [PATCH] add custom button

---
 src/viewer.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/viewer.js b/src/viewer.js
index c800dcba..82db55ec 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -978,6 +978,17 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
         this.forceRedraw();
     },
 
+     /**
+     * Add custom button  for this viewer.
+     *
+     * @functions
+     * @param {Element} CustomButton A reference to an element.
+     */
+     addButton: function( Custombutton ){
+        this.buttonGroup.buttons.push(Custombutton);
+        this.buttonGroup.element.appendChild(Custombutton.element);
+    },
+
     /**
      * @function
      * @returns {Boolean}