Passing C++ class to DLL for callbacks from D (Steam)

[evilrat]

On Friday, 8 June 2018 at 06:59:51 UTC, cc wrote:
> On Friday, 8 June 2018 at 02:52:10 UTC, Mike Parker wrote:
>> On Friday, 8 June 2018 at 00:55:35 UTC, cc wrote:
>>
>>>
>>> class CImpl : CCallbackBase {
>>> 	extern(C++) {
>>
>>> If anyone has any insight to provide it would be greatly 
>>> appreciated, thanks!
>>
>> I've not used any of the C++ interfacing features yet, but my 
>> understanding is the extern(C++) has to apply to the class 
>> declaration itself, not only the member functions:
>>
>> extern(C++)
>> class CImpl : CCallbackBase {
>>
>> Does that make a difference?
>
> Tried wrapping the CImpl class in extern(C++), no luck.. tried 
> final keyword on the methods too.  Thanks though.

Can you upload reduced example somewhere to play with?