Converting a string[] to char**

[David Zhang via Digitalmars-d-learn]

Hi,

I'm playing around with Vulkan, and part of its initialization 
code calls for an array of strings as char**. I've tried casting 
directly (cast(char**)) and breaking it down into an array of 
char*s (char*[]) before getting the pointer to its first element 
(&a[0]). It provides the correct type, but Vulkan rejects it. Is 
there a standard way of doing this?

I'm trying to set the ppEnabledExtensionNames member of 
VkInstanceCreateInfo.

Regards,
    David