I want to display a customized message box in extjs with a unique user interface. I have experimented with Ext.MessageBox.show and Ext.Msg.wait functions for this task. My specific requirement is to exhibit a custom "Loading" image instead of a static rectangular progress bar. Is there a method available to achieve this, or should I consider adopting an alternative strategy?
Kindly bear with me as I am venturing into JavaScript programming for the first time after working primarily with C++.