Re: [GD-General] Offset a void pointer

[Jorrit T. <jor...@uz...>]

CAVEY GERARD 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;
>  
>
Indeed, the cast operator is not an lvalue. So you cannot use it
on the left side of an '=' like that.

Greetings,