*.idl: Use correct type for BSTR strings in the defaultvalue() statements.

[Nikolay Sivov]

On 06.11.2015 11:37, Dmitry Timoshkov wrote:
> This matches midl/PSDK syntax, and allows to use Wine headers for compiling
> applications with a C++ win32/win64 compiler. In order to be usable by C++
> unix compilers widl needs to emit appropriate statically initialized WCHAR
> strings, but that's a different problem, currently the generated Wine headers
> with default(BSTR) statements can't be used with C++ at all.
>

Where do you see this? Mshtml.idl from Windows 10 SDK doesn't use this 
notation, and in fact only fsrm*.idl files do, so it's not a common 
practice. Generated headers should use L"", like you said. But only in 
case of empty strings. Also leaving this broken for everything that's 
not PSDK compiler doesn't sound right.