Adobe AIR 1.5 Cookbook
by Rich Tretola, David Tucker, Marco Casario, Koen DeWeggheleire, Koen De Weggheleire
Chapter 6. PDF Support
Detecting Whether PDF Support Is Available
Problem
You want to detect whether the user is able to display PDF content in your AIR application.
Solution
Read the value of the HTMLLoader.pdfCapability property to check that the user has a version of Adobe Reader or
Adobe Acrobat 8.1 (or newer) installed.
Discussion
The HTMLLoader.pdfCapability
property is set to one of the following constants of the HTMLPDFCapability class:
HTMLPDFCapability.STATUS_OKHTMLPDFCapability.ERROR_INSTALLED_READER_NOT_FOUNDHTMLPDFCapability.ERROR_INSTALLED_READER_TOO_OLDHTMLPDFCapability.ERROR_PREFERRED_READER_TOO_OLD
If the property has the value of the constant HTMLPDFCapability.STATUS_OK, then you are sure
that PDF content can be loaded into the HTMLLoader object. It also can happen that the
user does not have the right version of Adobe Reader installed. If the
installed Adobe Reader version is too old, then the constant ERROR_INSTALLED_READER_TOO_OLD is returned
when you call the HTMLLoader.pdfCapability property. If the user
has different versions of Adobe Reader installed but the one that is set
up to handle PDF content is older than Adobe Reader 8.1, the constant
ERROR_PREFERRED_READER_TOO_OLD is
returned. If the user has no version of Adobe Reader installed at all,
then the HTMLLoader object will not
be able to display any PDF content.
Working with PDF content on Windows involves one other important caveat. If Adobe Acrobat or Adobe Reader version 7.x (or newer) is opened on the user’s ...