Hi Andrew,
Thanks for using Syncfusion products.
In Syncfusion Tools WPF we have the control called MenuAdv but we don't have the control called PopupMenu in WPF.Please find the sample for MenuAdv in the following location.
Sample : rel='nofollow' href='
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=CS484313179.zipPlease let us know if this helps.
Thanks,
Karthick