need 'this' to access data member

[clayasaurus]

Derek Parnell wrote:
> On Tue, 26 Sep 2006 22:22:05 -0500, clayasaurus wrote:
> 
>> Hi, I have the following code attached, and I do not understand why I 
>> can not access this data member. Help is very much appreciated, thanks.
> 
> As explained already, a named union/struct must also have a data
> declaration before you can refer to its members. However, have you
> considered anonymous union/struct ? When you use these, you can refer to
> the members without having to qualify their names.
> 
> import std.stdio;
> // datafield hacks
> alias int FILE;
> alias int Uint8;
> 
> // structure
> struct SDL_RWops
> {
> 
>     int (*seek)(SDL_RWops *context, int offset, int whence);
>     int (*read)(SDL_RWops *context, void *ptr, int size, int maxnum);
>     int (*write)(SDL_RWops *context, void *ptr, int size, int num);
>     int (*close)(SDL_RWops *context);
>     uint type;
> 
>     union
>     {
>         version(Windows)
>         {
>             struct
>             {
>                 int append;
>                 void *h;
>             }
>         }
>         struct
>         {
>             int autoclose;
>             FILE *fp;
>         }
>         struct
>         {
>             Uint8 *base;
>             Uint8 *here;
>             Uint8 *stop;
>         }
>         struct
>         {
>             void *data1;
>         }
>     }
> }
> 
> 
> int main()
> {
>     SDL_RWops w;
> 
>     // need 'this' to access data member data1??
>     std.stdio.writefln("autoclose A:" , w.autoclose);
> 
>     w.data1 = &w; // sample data
>     std.stdio.writefln("autoclose B:" , w.autoclose);
> 
>     version(Windows)
>     {
>      w.append = 42; // sample data
>      std.stdio.writefln("autoclose B:" , w.autoclose);
>     }
>     return 0;
> }
> 

That would be nicer, but it is not my call. The SDL_RWops structure is 
from the SDL library (www.libsdl.org) and the goal is to stay as close 
to the original structure as possible.