How to make Create Window Work?

[Adam D. Ruppe]

On Wednesday, 9 December 2020 at 17:45:18 UTC, Ruby The Roobster 
wrote:
>                          0,                 // window menu

here, that's the only int you do and I'm pretty sure that's 
supposed a be a HMENU which is a HANDLE, which is a void* rather 
than an int.

C will cast 0 to null implicitly, D will not. If there's ever a 
case where you need to pass a number as a handle (like some 
HBRUSHe among others), you then explicitly cast it like 
`cast(HANDLE) -1`. (HANDLE is an alias to void* too so that would 
also work)

But for 0 you almost certainly just want to get in the habit of 
using the built in `null` instead 0.

re NULL vs null, both are OK here, but since NULL can actually be 
overridden by other libs (it is just a library constant) you're 
better off consistently using `null` for those too.