I realize that FormsCentral does not currently support file uploads (aka attachments) when using a PDF form to submit. In several of this places I've read this, it seems to imply that PDF forms to not support file uploads. I also noticed that when a PDF form is enabled for use with FormsCentral, the submit format is "HTML" (i.e., URL-encoded, or multipart/form-data when file attachments are present). PDF forms do indeed support file uploads in the same way that HTML forms do, so I'm wondering why FormsCentral doesn't allow them with PDF forms. On the form side, all it takes is setting up a text field so it can be used for file selection (Field Properties > Options > [Scroll Long Text] && [Field is used for file selection]) along with the field.browseForFileToSubmit JavaScript method (http://livedocs.adobe.com/acrobat_sdk/9.1/Acrobat9_1_HTMLHelp/JS_API_A croJS.88.734.html) with a button. The data is sent in the same format as with an HTML form, so it isn't difficult to process. What's the reason for this limitation, or will this method in fact work? I know that PDF forms can also support attachments two other ways, either as actual file attachments to the PDF or as a files attached as a comments, but these types are not what I'm asking about.
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