Re: calling C/C++ DLL that takes a pointer to LPTSTR

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Sam,

Is lpFileNames written to? If not, then just pass it as an array. I
assume you would have to pass a null string at the end of the array, but
that should translate just fine.

Also, make sure you do not use long in C# when defining this function.
Use int (LONGs in C/C++ are 32 bit integers).

Hope this helps.

--
- Nicholas Paldino [.NET/C# MVP]
- mvp@xxxxxxxxxxxxxxxxxxxxxxxxxxx

"Sam Carleton" <scarleton-nospam@xxxxxxxxxxxxxxxx> wrote in message
news:4HXre.42390$XA6.31136@xxxxxxxxxxxxxxxxxxxxxxxxx
> The C definition is along the lines of:
>
> LONG SetFilenames( LONG nFiles, LPCSTR* lpFileNames);
>
> Where the lpFileNames is an array of LPCSTR's.
>
> The ultimate DLL that needs to be called is a 3rd party's module,
> but there is a C/C++ DLL which is a wrapper for the 3rd party
> module, this wrapper is called directly by C#. There does not
> appear that such a method signature can be called direct from C#.
> What tactic should be used to get a collection of strings from C#
> to the wrapper class? A fellow developer suggested that I define
> a struct in C# that simply contains a string. I know that it
> would work, but it is messy and I am looking for a more straight
> forward, cleaner approach. Any ideas?
>
> Sam


.

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