--- Keith wrote:
> ...
> MemMove(item.DevStatus, record.DevStatus, record.StatusLen); <--
> ...
>
> typedef struct
> {
> UInt8 SysType;
> ...
> CharPtr DevStatus;
> } dbRecordItemType
>
> everytime when the sentense i point out (<--)
> ... SysFatalAlert came out.
>
I am tempted to ask, "doesn't anybody know anything about C?" but then
again, I've made worse mistakes myself.
Keith,
Your structure does not contain any space to hold a string. Your
structure contains space for a pointer to a string (CharPtr DevStatus).
If you want to move (copy, really) the bytes of a string of characters
somewhere, you have to have space there to store them. For example,
// this won't work
CharPtr msg;
StrCopy(msg, "Don't try this!")
// this will work
Char msg[11];
StrCopy(msg, "This is OK");
// this will also work
CharPtr msg;
msg = (CharPtr)MemPtrNew(11);
StrCopy(msg, "This is OK");
//when done with msg: MemPtrFree(msg);
If this doesn't make sense to you, please get yourself a good book on
the C programming language.
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