Q:
I'm trying to determine if a PDF document requires a password to be
viewed. I don't want to prompt for a password if one is needed, simple
return out of my function.
Right now I am deriving a class from SecurityHandler (similar to
EncTest sample project: http://www.pdftron.com/net/samplecode.html#EncTest),
however I am finding it a bit confusing.
Is there a way to quickly find out if the document requires open
password (and to possibly provide the required password)?
----
A:
A quick way to check is the document requires password is to check the
return value from pdfdoc.InitSecurityHandler(). If the return value is
false, the document requires the password.
For example:
pdfdoc = new PDFDoc(filename);
if (!pdfdoc.InitSecurityHandler()) { // In case pdfdoc requires open
password
!pdfdoc.InitStdSecurityHandler("my password")) {
return false;
}
}
... start using 'pdfdoc'
This approach is simpler than deriving a new SecurityHandler.