Re: [PATCH] vbscript: Fixed CBool

[Piotr Caban]

On 04/29/14 17:25, Shuai Meng wrote:
> 2014-04-29 22:25 GMT+08:00 Piotr Caban <[e-mail]
> >:
>     No, I mean that you should do something like this:
>     VARIANT v;
>     ...
>     V_VT(&v) = VT_EMPTY;
>     hr = VariantChangeType(..., &v);
>     if(FAILED(hr))
>          return hr;
>     ...
> if(res)
>      *res = v;
> else
>      VariantClear(&v);
>
> what will be returned after  *res =  v; or VariantClear(&v); ?

S_OK, because the function has succeeded.
> yes, I made a mistake. The error occurs when I test an empty string as
> Jacek have asked:
> 477 Call ok(CBool("") = True, "CBool("""") = " & CBool(""))
> 478 Call ok(getVT(CBool("")) = "VT_BOOL", "getVT(CBool("""")) = " &
> getVT(CBool("")))
> I have tried to solve it like this:
> 477 Call ok(CBool("") = True, "CBool("") = " & CBool(""))
> 478 Call ok(getVT(CBool("")) = "VT_BOOL", "getVT(CBool("")) = " &
> getVT(CBool("")))
> and this:
> 477 Call ok(CBool("") = True, "CBool(" & "" & ") = " & CBool(""))
> 478 Call ok(getVT(CBool("")) = "VT_BOOL", "getVT(CBool(" & "" & ")) = "
> & getVT(CBool("")))
> They all don't work...The problem is how describe an empty string
> between two quotation marks.

It's ok to use "" for empty string. The CBool is simply failing for that 
argument. It can be tested in similar way as "#FALSE# string.