[TRNSYS-users] Drop-in dll, cannot call external functions

David Bradley bradley at tess-inc.com
Tue Nov 4 09:51:06 PST 2008


Ivy,
 I would guess that you need to add the file TRNDll.lib to your external 
DLL project. An "unresolved external" error means that the code was 
looking for something (usually a function or a subroutine) that it can't 
find. In this case, the definition of the function 
"getSimulationStartTime()" and the subroutine "TYPECK" are both 
contained in the TRNDll.lib file.
Kind regards,
 David


baitao444 wrote:
> Hello!
>  
> I am sorry to bother you! I hope somebody can help me to solve the 
> problem in TRNSYS Thanks in advance!
> Since the release of TRNSYS 16 I linked my own types into the 
> TRNDll.dll in legacy mode. Know I wanted to update the sources to 
> TRNSYS 16 (using the acces functions, using double precision...) and 
> wanted to link them into an user-dll. But during the linking process I 
> get the error message
>
> Linking...
>    Creating library Release/BLSLib.lib and object Release/BLSLib.exp
> type112.obj : error LNK2001: unresolved external symbol
> _TRNSYSFUNCTIONS_mp_GETSIMULATIONSTARTTIME
> type112.obj : error LNK2001: unresolved external symbol _TYPECK
> Release/BLSLib.dll : fatal error LNK1120: 2 unresolved externals Error
> executing link.exe.
>
> BLSLib.dll - 3 error(s), 0 warning(s)
>  
>  
> Has anybody an idea? Linked to TRNDLL.dll the types (in TRNSYS 16 mode)
> work fine. I already checked the manual for the project settings.
> Everything should be ok. I have to admit that I'm not a FORTRAN pro so
> the solution to that problem might be very simple...
> I hope you can tell me how to link my own component to the external DLL.
> Best regards
> Ivy
>
>  
>  
>  
>  
>
>
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