How to programmatically import .pdf's with text as curves?

Using CorelDraw, when you open (or import) a .pdf file, you get a dialog box with the option to import the text as curves.  

However when using VBA or .NET to open (or import) .pdf files, there is no dialog and text is *always* imported as text, not curves.

The StructImportOptions and ImportFilter do not seem to have properties that can be set to do what I want.

Anyone know of a settings file or .ini file where I can force Corel to always import text as curves?  Or a way to hack the CRLPDFImport.dll file?