"Tom Wells" <noemail@nowhere.none> wrote in message
news:%23BSHdT1cEHA.688@TK2MSFTNGP11.phx.gbl...
> I trying to pass this structure to a dll:
>
> <StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Ansi, Pack:=1)> _
> Public Structure udtINTER01
> <VBFixedString(8), MarshalAs(UnmanagedType.ByValArray, SizeConst:=8)>
> Public action As Char()
> <VBFixedString(7), MarshalAs(UnmanagedType.ByValArray, SizeConst:=7)>
> Public equip_key As Char()
> <VBFixedString(256), MarshalAs(UnmanagedType.ByValArray,
> SizeConst:=256)> Public message As Char()
> <VBFixedString(512), MarshalAs(UnmanagedType.ByValArray,
> SizeConst:=512)> Public filler As Char()
> End Structure
>
> When I pass it to my dll I get this message:
>
> An unhandled exception of type 'System.ArgumentException' occured in
> Test1.exe
> Additional Information: Type could not be marshaled because the length
> of an embedded array instance does not match the declared length in the
> layout
>
> I reviewed the length of each element of the structure and they all
> matched the declared lengths.
>
> What does it want??
>
> Tom

Brent wrote:

> I would not worry about the VBFixedString attribute and try
>
> Brent
>
> "Tom Wells" <noemail@nowhere.none> wrote in message
> news:%23BSHdT1cEHA.688@TK2MSFTNGP11.phx.gbl...
>
>>I trying to pass this structure to a dll:
>>
>><StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Ansi, Pack:=1)> _
>>Public Structure udtINTER01
>> <VBFixedString(8), MarshalAs(UnmanagedType.ByValArray, SizeConst:=8)>
>>Public action As Char()
>> <VBFixedString(7), MarshalAs(UnmanagedType.ByValArray, SizeConst:=7)>
>>Public equip_key As Char()
>> <VBFixedString(256), MarshalAs(UnmanagedType.ByValArray,
>>SizeConst:=256)> Public message As Char()
>> <VBFixedString(512), MarshalAs(UnmanagedType.ByValArray,
>>SizeConst:=512)> Public filler As Char()
>>End Structure
>>
>>When I pass it to my dll I get this message:
>>
>>An unhandled exception of type 'System.ArgumentException' occured in
>>Test1.exe
>>Additional Information: Type could not be marshaled because the length
>>of an embedded array instance does not match the declared length in the
>>layout
>>
>>I reviewed the length of each element of the structure and they all
>>matched the declared lengths.
>>
>>What does it want??
>>
>>Tom
>
>