The command line utility "ug_inspect" can be used to see if the part has a drawing or not. When run with the default option, the first thing reported is the "non empty entity type chains"; if "Drawing" (type 62) shows up in the list, the part has a drawing with 1 or more sheets. I don't think that it will tell you the sheet count, but you can discern whether or not the part contains a drawing. This is a command line utility that returns the output to the stdout stream. If you are writing a journal or program, you can start this utility programmatically, pass in the required parameters, and parse the output to determine what type of objects the file contains.

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