It will be a great addition of RadPdfViewer if it supports forms/controls.

The events should provide information as to when a page is about to be rendered and when it is displayed in the control.

How to reproduce: check the attached project

Workaround: manually unload the document before disposing the control, the attached project includes a solution

This functionality should be similar to the one provided by Adobe.

The PdfPrintPreviewDialog should allow the end user to resize it and the page preview in it should scale accordingly. This would allow the user to have a better preview of the print settings.

Include Marquee Zoom as tool.

This dialog appears when one is clicking the signature field in the document. 

1. Load file which is signed with digital signature
2. Scroll to the end of document - you will see that the signature is not visible.  

Tint transformation function is used to transform Device N color in Alternate colorspace.