bug#10399: [PATCH] Document win32 font backends

[Óscar Fuentes]

Daniel Colascione <dancol@dancol.org> writes:

> On 12/31/11 3:22 AM, Eli Zaretskii wrote:
>> If a MinGW build of Emacs can use DirectWrite, and if there will be no
>> copyright issues with providing the missing headers and interface
>> libraries, then feel free to work on adding DirectWrite support to
>> Emacs.  Thanks in advance.
>
> What exactly is the legal situation surrounding headers? Would copying
> and modifying declarations from the Microsoft headers or MSDN be
> acceptable, considering that there is really only one way to describe
> what a function is called and what parameters it takes? If not, how
> exactly would one create untainted declarations?

IIRC, copying from the headers is not acceptable, as Microsoft's SDK
license bans that. Copying from MSDN is correct, because it is publicly
available documentation.

As Eli suggests, asking on the MinGW ml would provide definite answers,
as creating headers for the SDK/CRT/etc is what MinGW does all the time.