Linker error for core.sys.windows.winuser imports when compiling as 64 bit.

[Jonathan M Davis]

On Sunday, July 01, 2018 00:42:30 spikespaz via Digitalmars-d-learn wrote:
> Hey guys, I'm getting a linker error when compiling with DMD
> `-m63` that I don't get as 23 bit.
>
> I'm importing `ShowWindow` from `core.sys.windows.winuser`, and I
> get the following:
>
> C:\D\dmd2\windows\bin\lld-link.exe: warning: main.obj: undefined
> symbol: ShowWindow
> error: link failed
> Error: linker exited with status 1
>
> My compiler command is `dmd main.d -m64 -i -O -release -inline
> -boundscheck=off
> `.
>
> I don't think the source code would make a difference other than
> to say that I'm calling `ShowWindow`.
>
> Any help would be much appreciated. Thanks!

Well, per the MSDN page, that symbol is in User32.lib, so make sure that
you're linking against it - though why it would link against it with 32-bit
and not 64-bit, I don't know.

> Also, how does formatting work? Markdown doesn't seem to work, or
> HTML.

For the web forum you mean? It's just a web client for the newsgroups that
we use, and many folks interact with it as a newsgroup or via the mailing
list interface rather than through forum.dlang.org. So, it's expected that
everything will be in plain text.

- Jonathan M Davis