https://community.graphisoft.com/t5/Archicad-C-API/Use-MFC-in-ArchiCAD-Addon/m-p/145536#M6795 <BLOCKQUOTE>mrndf wrote:<BR />Because I want to send Data from ArchiCAD to an App via DDE, I need mfc support in the add on. Trying this I get a linker error:<BR /> Fehler 1 error LNK2005: _DllMain@12 ist bereits in ACAP_STAT.lib(ACAPlib.obj) definiert. mfcs80d.lib <BR /> English<BR /> Error 1 error LNK2005: _DllMain@12 is already defined in ACAP_STAT.lib(ACAPlib.obj). mfcs80d.lib <BR /> So has anyone a idea, or has already done similar things?</BLOCKQUOTE> I suggest finding another way to send the data. MFC comes with a whole bundle of assumptions that will cause problems in an add-on environment - link errors are only the beginning of the pain. Keep in mind that an add-on is not an application in its own right and is subject to a number of restrictions as a result. Thu, 26 Nov 2009 17:55:10 GMT Ralph Wessel 2009-11-26T17:55:10Z https://community.graphisoft.com/t5/Archicad-C-API/Use-MFC-in-ArchiCAD-Addon/m-p/145535#M6794 <DIV class="actalk-migrated-content">Because I want to send Data from ArchiCAD to an App via DDE, I need mfc support in the add on. Trying this I get a linker error:<BR /><BR />Fehler 1 error LNK2005: _DllMain@12 ist bereits in ACAP_STAT.lib(ACAPlib.obj) definiert. mfcs80d.lib <BR /><BR />English<BR />Error 1 error LNK2005: _DllMain@12 is already defined in ACAP_STAT.lib(ACAPlib.obj). mfcs80d.lib <BR /><BR />So has anyone a idea, or has already done similar things?<BR /><BR />Thanks marc</DIV> Thu, 03 Aug 2023 11:23:04 GMT https://community.graphisoft.com/t5/Archicad-C-API/Use-MFC-in-ArchiCAD-Addon/m-p/145535#M6794 Anonymous 2023-08-03T11:23:04Z https://community.graphisoft.com/t5/Archicad-C-API/Use-MFC-in-ArchiCAD-Addon/m-p/145536#M6795 <BLOCKQUOTE>mrndf wrote:<BR />Because I want to send Data from ArchiCAD to an App via DDE, I need mfc support in the add on. Trying this I get a linker error:<BR /> Fehler 1 error LNK2005: _DllMain@12 ist bereits in ACAP_STAT.lib(ACAPlib.obj) definiert. mfcs80d.lib <BR /> English<BR /> Error 1 error LNK2005: _DllMain@12 is already defined in ACAP_STAT.lib(ACAPlib.obj). mfcs80d.lib <BR /> So has anyone a idea, or has already done similar things?</BLOCKQUOTE> I suggest finding another way to send the data. MFC comes with a whole bundle of assumptions that will cause problems in an add-on environment - link errors are only the beginning of the pain. Keep in mind that an add-on is not an application in its own right and is subject to a number of restrictions as a result. Thu, 26 Nov 2009 17:55:10 GMT https://community.graphisoft.com/t5/Archicad-C-API/Use-MFC-in-ArchiCAD-Addon/m-p/145536#M6795 Ralph Wessel 2009-11-26T17:55:10Z