call DLL which has user-defined types

[James_G1]

Its a c++ templete class.  This I know for sure.  Not to be confused with the c++ complex (not templete) class.

From the header file I have:

typedef struct _C_double_complex
 { /* double complex */
 double _Val[2];
 } _C_double_complex;

So it looks like its a struct, who has a 2 element double array....maaaaaaaaaybe.

[nyc_(is_out_of_here)]

Hmmm, LabVIEW does have Complex Double data type. Maybe I can do something with that. The guy who wrote the DLL says that the complex is a number with real and imaginary parts. I'll have try it both ways and see how it goes or doesn't go.

Thanks for all the help.

[rolfk]

LabVIEW stores complex numbers indeed as two floating points besides each other. This does resemble the C++ template you did show earlier and I think it is a save bet that this should work at least memory wise. But real and imaginary part may be switched between LabVIEW and your C++ template. Only trial and error will show.

[nyc_(is_out_of_here)]

Just wanted to update this thread with news that I had success configuring the Call Library Function Node input parameter to Type = Adapt to Type and Data format = Array Data Pointer for the complex number array.

Just in case anyone else encounters this in their work.

The DLL was compiled with Microsoft Visual Studio .NET 2003.