Dave,
I believe this is a codeing error.
What you need to do, is pass the ADDRESS of your pointer to the function,
so it can put the Handle's ptr INTO the pointer variable.
i.e. your calling code s/b
FunctionX(MemHandle, &Buffer);
AND inside the called function s/b
*Result = MemHandleLock(Source);
Also the function declaration s/b
UInt FunctionX(Handle Source, CharPtr *Buffer);
What you're passing to your function is the address INSIDE the pointer
which is garbage.
And you're not returning ANYTHING to the calling procedure.
HTH
Kerry
At 11:06 AM 3/24/99 -0500, you wrote:
>Hi
>I'm having a problem passing a pointer between functions. I have a function
>that takes a Handle and CharPtr. The function locks the handle and returns
>the pointer to the string but the CharPtr always returns as NULL (even
>though the chunk was locked properly). Is this a problem with CodeWarrior
>(R5) or am I doing this the wrong way?
>
>Thanks
>Dave
>
><sample code>
>CharPtr Buffer;
>Handle MemHandle;
>.
>.
>.
>MemHandle = MemHandleNew(size+1);
>FunctionX(MemHandle,Buffer);
>// At this point Buffer is NULL - Why?
>.
>.
>.
>
>UInt FunctionX(Handle Source,CharPtr Result)
>{
>// do stuff that doesn't impact result or source
>
>Result = MemHandleLock(Source);
>// Result is the correct value here
>
>return retval;
>}
>
>
>
>
>
Kerry W. Podolsky
[EMAIL PROTECTED]
