i cannot get TwainOpenSource to work when using async... open default works, but not opensource. i altered the example code you've provided... basically i just need the user to select from a listbox what scanner they want to use, then open that source and scan, however it hangs on the TwainOpenSourc...

Is it possible to get tag based on either page number, or the current page? all i see is you can set the tag for a page based on the current page, however i cannot see what the tag value is for the current page.

i think i figured out what it was... i was using a GdPicturePDF object and loading it into the viewer. calling closedocument on the viewer, doesn't seem to close the pdf also, so i was missing the closedocument call on the pdf object. thanks for the reply.

Was this ever solved?? i have a document that i load thumbnails from the viewer. The document has around 1200 pages in it. when i call closedocument and clearallitems, my exe still sits around 1.2 GB. Any suggestions?

When changing the size of the thumbnails, the tag property is reset to nothing.

Is there a way to capture a signature while viewing a pdf in the GdViewer control?