Looking for a little help with the win32 headers

[Jean pierre via Digitalmars-d-learn]

On Thursday, 26 March 2015 at 04:52:23 UTC, Belly wrote:
> Hello, just installed D today. I have this code:
>
> import std.stdio;
> import win32.windef;
> import win32.winbase;
>
> void main()
> {
>     LPSTR lpBuffer;
>     PDWORD lpnSize;
>     int result = GetComputerNameA(lpBuffer, lpnSize);
>
>     writeln(result);
> }
>
> It passes zeroes to the API, I'm stuck and can't find a 
> suitable sample in the win32 repository here:
> https://github.com/AndrejMitrovic/DWinProgramming

---
import std.stdio;
import core.sys.windows.windows;

extern(Windows) export
bool GetComputerNameA(LPTSTR lpBuffer, LPDWORD lpnSize);

void main(string[] args)
{
     uint len = 1024;
     char[] result;
     result.length = len;
     GetComputerNameA(result.ptr, &len);
     result.length = len;
     writeln(result);
}
---
tested win32