Accessing enum value in DLLs header file

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Olaf
Olaf 2013-12-16
评论： dpb 2013-12-16
Hello,
I am using a DLL for device communication. Loading the DLL works. There are some enumerations defined in the DLLs header file. How can i access those? Just writing the enum value as string leads to an error that "Parameter must be scalar".
Thanks alot

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回答（1 个）

dpb
dpb 2013-12-16
You can't get at them unless the symbols are exposed by the DLL which in general they wouldn't be except as internal. AFAIK the only way you'll see these would be to use LOADLIBRARYEX with DONT_RESOLVE_DLL_REFERENCES and then read the data area containing the enumerations. It's probably both easier and safer to simply recreate them for your application.
  2 个评论
Olaf
Olaf 2013-12-16
I managed to find a way to access the enums.
loadlibrary('somelib.dll', 'somelib.h', 'mfilename', 'somelibM'); [methodinfo, structs, enuminfo, ThunkLibName] = somelibM;
then i can access the enum like
enuminfo.EMYEnum.eENUMVALUE
I am not sure, if thats the best way, but i works.
dpb
dpb 2013-12-16
That's better than I had thought probably possible...good to know (I guess :) )

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