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Password Detection |
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Si 
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Joined: 13 Jan 11 Status: Offline Points: 5 |
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 Topic: Password DetectionPosted: 13 Jan 11 at 11:36AM |
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Hi there
I've been using Quick PDF for a few months now but am new to the forums :)
I am trying to determine whether user selected files are password protected. Some PDFs are encrypted but do not have passwords, requiring a blank password to be set with SetAdvancePassword(""), but some files will need the user to enter the password so I need to be able to determine which is needed.
I thought the return value from LoadFromFile might do the trick but it always returns a 1, regardless if the file is encrypted with or without a password. So I'm not sure if this is a bug or I'm doing something wrong, or if this is even the correct way to check for password protected files?
Any help would be appreciated, thanks.
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Ingo
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Joined: 29 Oct 05 Status: Offline Points: 3530 |
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Posted: 13 Jan 11 at 11:50AM |
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Hi Si!
//in Delphi: // EncryptionStatus 1 and 2 means encrypted If EncryptionStatus > 0 Then Decrypt; With "GetAnalysisInfo" you can check if there's a user- or main password (and other things). Have a look here: http://www.quickpdflibrary.com/help/quickpdf/GetAnalysisInfo.php Cheers and welcome here, Ingo |
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Si
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Posted: 13 Jan 11 at 12:13PM |
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Ah, missed that one. Will give it a try, thanks.
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Si
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Posted: 13 Jan 11 at 3:36PM |
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Just tried that and AnalyseFile requires the password in order to analyse the file. I need to find out if a password is needed so I can prompt the user for it, which I can then use to open the file.
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Ingo
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Posted: 13 Jan 11 at 4:44PM |
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Sorry.
Read the online reference and try "SecurityInfo"... It will work for you... sure ;-) |
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Si
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Posted: 13 Jan 11 at 5:05PM |
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I already tried using that, but it returns 0 for all items. But as you say it should work - I'll double check my code to make sure.
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Ingo
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Posted: 14 Jan 11 at 11:13AM |
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Hi!
SecurityInfo is one of the oldest function. It WILL work if your code is okay. Perhaps you should post it here? Cheers, Ingo |
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Si
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Posted: 14 Jan 11 at 11:37AM |
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Ah my bad. My wrapper for that function was wrong ;) All sorted now, thanks for your help Ingo.
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