In C and C++, when you use an C array as parameter of a function, then the
compiler automatically passes a pointer to the first element.
In Nim, we may define our functions in a way that arrays and seqs are of type
open array, so we can pass them directly. But if your function expects a
pointer, then you may have to use addr operator and maybe additional a cast.
Maybe something like
var imgdata = [0, 0] # array, use @[0, 0] for a seq
var image = iupImageRGBA(32, 32, cast [MyDesiredType](addr(imgdata[0]))) #
should work for array and seq
var image = iupImageRGBA(32, 32, cast [MyDesiredType](addr(imgdata))) #
works for array only
Run
