[2/2] oleacc: implemented GetRoleText[A/W] with tests

[Nikolay Sivov]

Dmitry Timoshkov wrote:
> "Nikolay Sivov" <bunglehead at gmail.com> wrote:
>
>>> Why do you need to allocate an intermediate roletextA?
>>>
>> WideCharToMultiByte requires to have a sufficient buffer. I think 
>> it's the easiest way to allocate necessary buffer instead of using 
>> local buffer of some hardcoded length. What do you think?
>
> And what is the problem with WideCharToMultiByte?
>
No problems with it. The reason is that I couldn't use rolemax as an 
WideCharToMultiByte argument cause it could be less then required 
buffer. After that I don't want to use something like CHAR buff[64] 
because of unexplainable length, so I allocate it in heap.
Why it's wrong?