Hi,
the tips you gave me on open arrays did not really solve my problem. Let me try to describe my problem a little more detailed:
- a program calls a procedure in a unit with some params, like:

testprocedure (x, y, z, @buffer, sizeof(Buffer));

- In fact the buffer is an array, but only in the program that calls the procedure
- so the procedure does only know the pointer to the buffer and the size of it.
- now I want to move the data within the procedure with an computed offset, e.g. move the data at @buffer+offset -> @buffer ... how can this be done?
- Is there any complementary to the "move"-command that can work with pointers?

Many thanks in advance again ;-)

Chris

Just declare a type like

type
  pbyte = ^byte;

and do

move((pbyte(buffer)+offset)^,pbyte(buffer)^,size);

Note that you should use buffer instead of @buffer, since you say buffer is already a pointer.

Jonas