Get variable VB UDT in VC DLL array or something like this!

[EdgarBM]

Hi,
I'm trying to pass binary information to a VC DLL, like a structure (not predefined in the DLL) but I don't have any idea about how to do it.

There's any way to convert VB UDT in a String of bytes, or something like this, which the VC DLL could understand and use?(OR ONLY RECEIVE WITHOUT BREAK!)

Thanks a lot in advance.

Edgar

[crispin]

gonna need a bit more info on this one Edgar - got any code you can post....

[EdgarBM]

Hi, Crispin,

I have no special code already wrotten, because I don't know what to write...

It should be something like this in C:

void DllExportedFunction (void *information, long sizeOfInformation)
//those params or what should be necessary (SAFEARRAY, ...whatever)
{
...
// here I would access the binary information (maybe write it directly to a file)
...
}

And in my VB source code I would like to know how to pass it to the DLL and in which kind of param; something like: (doesn't works)

type MyUDT
. . .L1 as long
. . .L2 as long
end type

sub main()
. .Dim sArray as String
. .Dim stUDT as MyUDT

. .sArray = stUDT
. .DllEsportedFunction (sArray, Len (sArray))

end sub


..OR SOMETHING LIKE THIS!! it only must let me access to the binary data to write it to a file.

Thank you Crispin for your effort.
Edgar