Re: [GD-General] Offset a void pointer

[Richard F. <ra...@gm...>]

just add an ampersand to your cast to make it a reference pointer not
just a pointer

void *BufferPtr;
unnsigned int stride=5;
// should now compile
(char*&)BufferPtr+=stride;


On Tue, 12 Oct 2004 14:17:14 +0200, CAVEY GERARD <ger...@sg...> wrote:
> Hi
> 
> I have little question
> It seems impossible to me to offset a void pointer with the += operator
> can someone explain me why ?
> I don t really understand the compiler here ... the left casting should
> give him the memory unit size , right?Is left casting forbidden?
> 
> void *BufferPtr;
> unnsigned int stridde=5;
> //doesnt compile !
> (char*)BufferPtr+=stride;
> //will compile
> BufferPtr=(char*)BufferPtr+stride;
> 
> Thanks
> GC.
> 
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