Warning loadline: Data type ULONG,UCHAR,... unknown which are used in h-file

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Hello everyone,
I'm trying to load a shared library, called Gen3.dll, into MATLAB. The corresponding header file is gives some warnings:
" Type 'ULONG' was not found. Defaulting to type error." The corresponding line was: typedef struct{ ulong ulValidData;...}
Sam error appears for uchar and ushort.
How do I resolve this issue? (Note, I have not developped the dll nor the header, so my resources are somewhat limited...)

Accepted Answer

Benjamin Schwabe
Benjamin Schwabe on 30 Jan 2012
I found that these are the declarations used in C++, but the correct syntax in C is unsigned long, etc.
That resolved the warning.

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