Canvas.isModified listener is not calling?

GoJS
1

Hi
i am doing some changes in canvas.But canvas.isModified is not calling in any specific case.can you tell me what may be the cases.

2

GoJS does not have a Canvas class – that is an HTML DOM interface, and it does not define an “isModified” property.

There is a Diagram.isModified property. If you want to be notified when it changes value, implement a “Modified” DiagramEvent listener. Note the documentation, Page Not Found -- Northwoods Software

do not modify the Diagram or its Model in the event listener

3

Ya I also calling with diagram.isModified here my diagram is canvas.its DiagramEvent listener is not calling

4

Perhaps it was already modified, so the property never changed value after registering the listener.

Maybe you want to establish a “ModelChanged” listener, as shown at Diagram | GoJS API. Or call Diagram | GoJS API.