Re: [Mingw-users] OLE test program works with MSVC but fails withMinGW?

[Tom B. <an...@dd...>]

Hmm, it doesn't help. VC still works, Mingw behaviour has changed: Invoke()
now fails. When I use VT_BOOL and the value 1 it succeeds again, but no
visibility: it probably thinks i want Visible to be false. The VARIANT
structure must be different from MW to VC, I'll keep looking into it - if
anyone has any ideas, I appreciate it.
Tom

Viatcheslav Batichtchev wrote:

> Try to use VARIANT_TRUE constant as a value of the parameter insted of 1
> (actually OLE's TRUE is -1) and  VT_BOOL as a type.
>
> HTH
>
> Slav.
>
> -----Original Message-----
> From: Tom Blauwendraat [mailto:an...@dd...]
> Sent: 17 April 2002 13:45
> To: min...@li...
> Subject: [Mingw-users] OLE test program works with MSVC but fails with
> MinGW?
>
> Hello,
>
> I was looking on MSDN for help on controlling the IDispatch object, and
> I found an example. In MSVC it compiles ok, and does what it is supposed
> to. But when I try this example in MinGW (1.1) it compiles ok but
> doesn't work.
>
> The example is supposed to start Excel using CoCreateInstance, and use
> the IDispatch object to tell the window to make itself visible. As far
> as I can see the first part is ok, I see a program "Excel" pop up and
> disappear in my task list correctly. But the window doesn't become
> visible. I figure this must have something to do with the Variant that
> is used to transfer the "Visible" parameter. But I can't see anything
> wrong with the example.
>
> I hope one of you can take a look at it and tell me what's wrong or if
> MinGW supports this at all. I included a ZIP file "testcase.zip" with
> the source and two batchfiles, one i use for compiling MW the other for
> MSVC.
>
> Tom
>
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