Alan,
At 10:51 AM 8/26/99 -0500, you wrote:
>This is EXACTLY what I want. dataP is a pointer to the data I want to
>access READ-ONLY; thus I WANT the compiler to prevent me from
>modifying *dataP. For instance, in memory, there is:
>
>0x0010 "Alan Pinstein"
>
>
I think you misunderstood me, which is not surprising given the difficulty
I'm having explaining myself.
Let me try again - you want a pointer to a pointer to constant memory. In
other words, given the example above, let's say I have a function that
assigns the address of that memory to a void ptr out-param:
void GetAlansName(void ** dataP)
{
(*dataP) = (void*) "Alan Pinstein";
}
So far, so good. But you want to make sure that noone will ever change the
value of "Alan Pinstein", right? And you'd like the compiler to enforce
this. In this case, you want:
void GetAlansConstName (void const** dataP)
{
(*dataP) = (void const *) "Alan Pinstein";
}
The declaration I mentioned (void * const *) was an example of what you did
not want. Sorry it was not clear. I believe this declaration should work
- let me know.
Greg
Greg Winton
Bachmann Software and Services, LLC
mailto:[EMAIL PROTECTED]
http://www.bachmannsoftware.com
Software Development for Handheld & Mobile Computing, Windows and the Internet
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