how to invoke printer notification from driver events without print monitor

Question

I would like to know how to invoke printer notification from driver events without print monitor.
As per the https://learn.microsoft.com/en-us/windows-hardware/drivers/print/driver-support-for-customized-ui it is mentioned that a port monitor is required to have a bidi communication which invokes the driver event.

But currently my requirement is just to invoke the driver event without using any print driver.
Can anyone tell me how to proceed on this?

My requirement is to invoke a UI which is a .net application from the print click. so, after going through the documents I have created a V4 printer driver , added the printer extension sample . The UI currently opens from the select properties because of printer preference screen. But I would like to open the UI from print button itself. So, I guess i need to use the driver event. But which event to add and whether I need a port monitor ?