Word.ContentControlSelectionChangedEventArgs interface      
Provides information about the content control that raised the contentControlSelectionChanged event.
Remarks
Examples
// Link to full sample: https://raw.githubusercontent.com/OfficeDev/office-js-snippets/prod/samples/word/10-content-controls/content-control-onselectionchanged-event.yaml
await Word.run(async (context) => {
  const contentControls: Word.ContentControlCollection = context.document.contentControls;
  contentControls.load("items");
  await context.sync();
  if (contentControls.items.length === 0) {
    console.log("There aren't any content controls in this document so can't register event handlers.");
  } else {
    for (let i = 0; i < contentControls.items.length; i++) {
      eventContexts[i] = contentControls.items[i].onSelectionChanged.add(contentControlSelectionChanged);
      contentControls.items[i].track();
    }
    await context.sync();
    console.log("Added event handlers for when selections are changed in content controls.");
  }
});
...
async function contentControlSelectionChanged(event: Word.ContentControlSelectionChangedEventArgs) {
  await Word.run(async (context) => {
    console.log(`${event.eventType} event detected. IDs of content controls where selection was changed:`, event.ids);
  });
}
	Properties
| event | 
	The event type. See   | 
| ids | Gets the content control IDs.  | 
| source | The source of the event. It can be local or remote (through coauthoring).  | 
Property Details
		eventType
	 
	The event type. See Word.EventType for details.
eventType: Word.EventType | "ContentControlDeleted" | "ContentControlSelectionChanged" | "ContentControlDataChanged" | "ContentControlAdded" | "ContentControlEntered" | "ContentControlExited" | "ParagraphAdded" | "ParagraphChanged" | "ParagraphDeleted" | "AnnotationClicked" | "AnnotationHovered" | "AnnotationInserted" | "AnnotationRemoved" | "AnnotationPopupAction";
				Property Value
Word.EventType | "ContentControlDeleted" | "ContentControlSelectionChanged" | "ContentControlDataChanged" | "ContentControlAdded" | "ContentControlEntered" | "ContentControlExited" | "ParagraphAdded" | "ParagraphChanged" | "ParagraphDeleted" | "AnnotationClicked" | "AnnotationHovered" | "AnnotationInserted" | "AnnotationRemoved" | "AnnotationPopupAction"
Remarks
ids
Gets the content control IDs.
ids: number[];
				Property Value
number[]
Remarks
source
The source of the event. It can be local or remote (through coauthoring).
source: Word.EventSource | "Local" | "Remote";
				Property Value
Word.EventSource | "Local" | "Remote"