COM objects in cpp (was Making braille display working with a particular application)
- From: Alex Hall <mehgcap@xxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Thu, 16 Sep 2010 12:44:22 -0400
I do not know much cpp, so this is getting beyond me. Perhaps someone
else can jump in here?
On 9/16/10, QuentinC <webmaster@xxxxxxxxxxxx> wrote:
> Hello Alex,
> To create a COM object in C/C++, I need a serie of codes and a class header
> or a C style structure definition defining the accessible methods.
> Where could I find those for jaws ?
>
> Here is for example what I do to open SAPI5 :
>
> BOOL sapiInit () {
> if (FAILED(CoInitialize(NULL))) return FALSE;
> HRESULT hr = CoCreateInstance(&CLSID_SpVoice, NULL, CLSCTX_ALL,
> &IID_ISpVoice, (void **)&pVoice);
> //... doing something with pVoice
> }
>
> where the first, third and fourth parameters are constants which can be
> found in sapi.h headers, and fifth is a reference to a pointer which will
> receive the object instance.
> If I want to create a jaws or a windows eye object, I have to know the first
> three constants, and have a class definition or a C style structure to know
> which methods are available...
>
> Maybe you know an easier way to create a COM object ? I don't know COM very
> well.
> Note : the above snippet is taken and adaptated from MSDN, copy/past, I
> don't understand the four first parameters at all.
>
> My compiler is MinGW with GCC 3.4.5
>
>
>
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>
--
Have a great day,
Alex (msg sent from GMail website)
mehgcap@xxxxxxxxx; http://www.facebook.com/mehgcap
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- » COM objects in cpp (was Making braille display working with a particular application) - Alex Hall
