HIDP_ constants missing from metadata

[AArnott]

@Slion reports at microsoft/CsWin32#583

I'm trying to use HidP_GetUsageValueArray. The returned value is declared as NTSTATUS, are the constant values it can take declared somewhere? If I put them in NativeMethods.txt is says it can't find them.

Indeed, it appears that none of the return values documented for this API are declared in the metadata. Since the method itself is in the metadata, it seems the return values should be as well.

[Slion]

Looks like the DIGCF_* flags are missing too.

See:
microsoft/CsWin32#590
https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdigetclassdevsw

[Slion]

While you are at it, looks like DEVPROP_TYPE* are missing too.

[KalleOlaviNiemitalo]

Adding DEVPROP_TYPE* was requested in #958.

[elachlan]

Found them in the headers, I think.
generation\WinSDK\RecompiledIdlHeaders\shared\hidpi.h

[elachlan]

This one will be hard I think since they are macros:

#define HIDP_ERROR_CODES(SEV, CODE) \
        ((NTSTATUS) (((SEV) << 28) | (FACILITY_HID_ERROR_CODE << 16) | (CODE)))

#define HIDP_STATUS_SUCCESS                  (HIDP_ERROR_CODES(0x0,0))

Does clangsharp handle that?

[mikebattista]

The ConstantsScraper handles this. We'd need to update it to handle this pattern.