https://www.ptcusercommunity.com/t5/Customization/Issues-with-Asynchronous-and-Multiprocess-Application-Methods-in/m-p/1044779#M14626 <P>Hello Community,</P><P>I am working with <STRONG>Creo Toolkit</STRONG> and exploring three different methods of application creation:</P><OL><LI><P><STRONG>Asynchronous Method</STRONG></P><UL><LI>I am using the API ProEngineerConnect() which refers to the library pt_asynchronous.lib.</LI><LI>Even though I have included this library under <STRONG>Linker → General → Additional Library Directories</STRONG>, I am getting the following compile-time error:<PRE>identifier "ProEngineerConnect" is undefined</PRE></LI></UL></LI><LI><P><STRONG>Multiprocess Method</STRONG></P><UL><LI>When I use the generated DLL in another <STRONG>C# WinForms application</STRONG>, I encounter this runtime error:<PRE>Unable to load DLL "DLLNAME.dll" or one of its dependencies: The specified module could not be found. (0x8007007E)</PRE></LI></UL></LI></OL><P>Could anyone help me understand:</P><UL><LI>Why is ProEngineerConnect() not recognized even after linking the correct library?</LI><LI>What could be causing the DLL load failure in the C# application?</LI><LI>Are there any best practices or additional steps for setting up asynchronous and multiprocess methods in Creo Toolkit?</LI></UL><P>Any guidance or examples would be greatly appreciated.</P> Tue, 25 Nov 2025 10:24:38 GMT AS_13847166 2025-11-25T10:24:38Z https://www.ptcusercommunity.com/t5/Customization/Issues-with-Asynchronous-and-Multiprocess-Application-Methods-in/m-p/1044779#M14626 <P>Hello Community,</P><P>I am working with <STRONG>Creo Toolkit</STRONG> and exploring three different methods of application creation:</P><OL><LI><P><STRONG>Asynchronous Method</STRONG></P><UL><LI>I am using the API ProEngineerConnect() which refers to the library pt_asynchronous.lib.</LI><LI>Even though I have included this library under <STRONG>Linker → General → Additional Library Directories</STRONG>, I am getting the following compile-time error:<PRE>identifier "ProEngineerConnect" is undefined</PRE></LI></UL></LI><LI><P><STRONG>Multiprocess Method</STRONG></P><UL><LI>When I use the generated DLL in another <STRONG>C# WinForms application</STRONG>, I encounter this runtime error:<PRE>Unable to load DLL "DLLNAME.dll" or one of its dependencies: The specified module could not be found. (0x8007007E)</PRE></LI></UL></LI></OL><P>Could anyone help me understand:</P><UL><LI>Why is ProEngineerConnect() not recognized even after linking the correct library?</LI><LI>What could be causing the DLL load failure in the C# application?</LI><LI>Are there any best practices or additional steps for setting up asynchronous and multiprocess methods in Creo Toolkit?</LI></UL><P>Any guidance or examples would be greatly appreciated.</P> Tue, 25 Nov 2025 10:24:38 GMT https://www.ptcusercommunity.com/t5/Customization/Issues-with-Asynchronous-and-Multiprocess-Application-Methods-in/m-p/1044779#M14626 AS_13847166 2025-11-25T10:24:38Z https://www.ptcusercommunity.com/t5/Customization/Issues-with-Asynchronous-and-Multiprocess-Application-Methods-in/m-p/1044824#M14628 <P>Are you making sure that all required Creo DLL’s are in your path var prior to load? The obj machine path must be know. For the link error I guess the lib or the header file is still unknown.</P> Tue, 25 Nov 2025 14:39:48 GMT https://www.ptcusercommunity.com/t5/Customization/Issues-with-Asynchronous-and-Multiprocess-Application-Methods-in/m-p/1044824#M14628 RPN 2025-11-25T14:39:48Z