Re: [AD] microscopic issues compiling 4.1.13 with latest MinGW packages

[Daniel Schlyder <daniel@xxxxxxxxxx>]

Eric Botcazou:
> I'd rather not use unions when the problem is the cast to LPVOID*.  I'm under
> the impression that declaring a temp object of type LPVOID, passing its 
> address to the function and then assigning it to the original object should 
> work.  Am I mistaken?

Oh, you mean like this:

   LPVOID temp = &directdraw;

   /* ...then query the DirectDraw2 interface */
   hr = IDirectDraw_QueryInterface(directdraw1, &IID_IDirectDraw2, &temp);

That works. I thought you meant there was a way to do it directly in the
function call, though.

>> Also, is it ok to always name the union members "first" and "second", with 
>> "first" being the original type?

> Sure.

Ok. Maybe I've used std::pair one time too many, though. :) I guess alternative
names with more meaning could be:

union {
   RECT *rect_ptr;
   LPPOINT lppoint;
} dest_rect;

or

union {
   RECT *orig_type;
   LPPOINT cast_type;
} dest_rect;

Anyway, I'll try to make a patch.


Kind regards,
Daniel Schlyder
--
http://bitblaze.com/