show sign document dialog on document open

The Signature has a "signatureSign()" function. You can call it like this:
this.getField("Signature1").signatureSign({bUI:true});
However, this is a privileged function. It cannot be called directly from inside a document script. You'll have to create a folder level trusted fucntion to call it. Which is exactly what you would need to do to call the menu item.

Signing is an activity that has to be Initiated or Approved by the user. So the user has to either click on the signature field themselves or they have to install a script that will do it.

Thom Parker
The source for PDF Scripting Info
[url=http://www.pdfScripting.com]pdfscripting.com[/url]

The Acrobat JavaScript Reference, Use it Early and Often
[url=http://www.adobe.com/devnet/acrobat/javascript.php]http://www.adobe.com/devnet/acrobat/javascript.php[/url]

Then most important JavaScript Development tool in Acrobat
[url=http://www.pdfscripting.com/public/34.cfm#JSIntro][b]The Console Window (Video tutorial)[/b][/url]
[url=http://www.acrobatusers.com/tutorials/2006/javascript_console][b]The Console Window(article)[/b][/url]

Thanks for the solution Thom. Also it helps me to understand a general idea a little bit more )

I belive it's an acceptable way to ask customers to install a script.

Could you advise me a method to call this script (trusted function) using pdf ActiveX?

Now I add the call of a signing in all pdf docs on open event in Acrobat Pro and just generate links to these pdfs in my web application.
But if users install the script on their systems it would be better to open a pdf using ActiveX and than call a sign document trusted function.

How do you think is it possible?

Regards, Ilya

Yes, The Acrobat IAC API has access to the JavaScript environment thorugh the JSO. There is a function for acquiring it. From the JSO a VB script can call a folder level function. You'll find exampes in the SDK and information in the IAC portion of the online SDK reference.

http://livedocs.adobe.com/acrobat_sdk/9.1/Acrobat9_1_HTMLHelp/wwhelp/wwhimpl/js/html/wwhelp.htm?&accessible=trueThom Parker
The source for PDF Scripting Info
[url=http://www.pdfScripting.com]pdfscripting.com[/url]

The Acrobat JavaScript Reference, Use it Early and Often
[url=http://www.adobe.com/devnet/acrobat/javascript.php]http://www.adobe.com/devnet/acrobat/javascript.php[/url]

Then most important JavaScript Development tool in Acrobat
[url=http://www.pdfscripting.com/public/34.cfm#JSIntro][b]The Console Window (Video tutorial)[/b][/url]
[url=http://www.acrobatusers.com/tutorials/2006/javascript_console][b]The Console Window(article)[/b][/url]

Thanks a lot Thom. I'll make some investigations using new information.

Looks like it is a really interesting technology )

Thanks once more