in creating screenshot custom widget - how to insert the html?

[MichaelLev]

In ArcGIS Web AppBuilder (Developer Edition) 2.16, I have to create in-panel custom widget to make a screenshot, based upon Take a screenshot of a SceneView | ArcGIS API for JavaScript 4.15  

As I'm relatively new to this area, I'd appreciate getting advice in which way to do it? whether by javascript "innerHTML =" sentences, or to create a class like LoadingShelter? And I'd like to get some hints as to how to start doing it.

In short: I don't know the way how can I insert html and css by in-panel widget, into the main scene, which, according to what I understand, is what I need to implement in this case.

[RobertScheitlin__GISP]

No this was just an example for Michael of how to take a sample and convert it to a widget.

[AdamGebhart]

Good to know.  Thank you.

[AdamGebhart]

Out of curiosity, Robert Scheitlin, GISP, have you tried it in 2.17?  I can't find the 2.16 SDK and for some reason I'm not seeing it as an option to add to a 2.17 app.

[RobertScheitlin__GISP]

Adam,

   This widget is a 3D WAB App widget only. Are you adding it to the [install dir]\client\stemapp3d\widgets folder and creating a 3D app?

[AdamGebhart]

Sorry, I didn't realize it was a 3D widget.  I've been trying in a 2D app.  Thanks for answering.

[MichaelLev]

Robert, Thank you very much! now it's perfect!

I wnat only to be sure why in the esri example we don't get multi-events. Is it because there we don't ADD events, but only OVERRIDE the button definition (we do button.onclick = function)? is this the right explanation?

[RobertScheitlin__GISP · Accepted solution]

Correct, Using Dojo on class means that an event listener is added each time that line is called vs. onclick is a function that is just being overwritten each time.

Don't forget to make your questions as answered once they are. This helps others using the forum find the correct answer.

[MichaelLev]

Thank you very much, Robert. As usual, you are so helpful and opening my eyes in this area of custom widgets.

Michael