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Do you have any problem with this function "ProMdlnameRetrieve" in Creo Parametric Toolkit 3.0 M030 with C language in order to pen drawing model?
The return value is -1(PRO_TK_GENERAL_ERROR).
I may check if you could share your code snippet.
Please try
ProMdlFiletypeLoad
It works for me to open Drawing, Assembly, Part.
Hope it helps,
Madhavi
