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How to open PDF in existing instance of Acrobat Pro DC through C#

Forum|Forum|8 years ago
January 15, 2018
6 replies
3237 views

Using Acrobat DC SDK in C#, with following code

Type PDFType = Type.GetTypeFromProgID("AcroExch.App");
CAcroApp AcroAppObj = Activator.CreateInstance(PDFType) as CAcroApp;

AcroAppObj.Show();

CAcroAVDoc AvDocObj = AcroAppObj.GetActiveDoc() as CAcroAVDoc;

CAcroPDDoc PdDocObj = AvDocObj.GetPDDoc() as CAcroPDDoc;

I am able to get an opened document, How can I open PDF document in this existing instance through C#?

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Correct answer Karl Heinz Kremer

This is unfortunately the way Acrobat works: You cannot open a new document in a new tab when you use the IAC interface - even when you use the JSObject bridge. The document will always open in it's own window. If you however create a JavaScript function in a folder level script which opens a document, and then call that function from within your IAC based interface, the document will open in a new tab. I struggled with this a few weeks ago and ended up creating a folder level script.

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This is not an instance, by the way. Calling it one will hopelessly confuse your chance of support, if any...

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I haven't tried it and, like you, I would expect that if tabs are activated then this would make a new tab. But it does what it does, there are no special controls or API extensions.

Karl Heinz Kremer

Correct answer

Community Expert

This is unfortunately the way Acrobat works: You cannot open a new document in a new tab when you use the IAC interface - even when you use the JSObject bridge. The document will always open in it's own window. If you however create a JavaScript function in a folder level script which opens a document, and then call that function from within your IAC based interface, the document will open in a new tab. I struggled with this a few weeks ago and ended up creating a folder level script.

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Tabs were added only a couple of years ago, but these APIs are over 15 years old. There‘s no specific tab control. Just double checking: you do see tans in this app, right (old Acrobat 2015 does not have tabs)

aniketb74878072Author

Participating Frequently

Ultimately, you wish to say, I can't open doc in existing instance as new tab, opening document will create new instance only.

So, If I wish to open N pdf documents programatically then N Windows will be created, am I correct?

Anyways thanks for the info.

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No, there is only one instance of Acrobat. Do you mean it opens a new tab? A new window? This is normal.

aniketb74878072Author

Participating Frequently

It directly opens a new Window, whereas I am expecting to open only a new tab.

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Does AVDoc.Open do something different to this?

aniketb74878072Author

Participating Frequently

It open document in a new instance, using following code

AvDocObj.Open(pathForDocument, "")

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This should be in the SDK documentation. Do you have it?

aniketb74878072Author

Participating Frequently

Yes, I refer to, Acrobat DC SDK Documentation for reference, but unable to find any clue over there to open a pdf in running instance of Acrobat Pro DC

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