BoldSignEasily embed eSignatures in your .NET applications. Free sandbox with native SDK available.
We have created the sample to interact with PdfPopupAnnotation where you can get the coordinates using Holding event and comparing the coordinates with annotation location. Please find the sample in the following location:
Here our sample displays the pop up message box when you hold by touch or left clicked with the mouse on the Popup annotation.
Please let us know if you have any concerns on this.
Thanks for the update.
We are happy to hear that your issue is resolved.
Please let us know if you need further assistance.