Right, the structure is a fixed size. The last element is a fixed size buffer something like char[1024]. The first element in the structure is a size field that tells the called function how big the whole structure is so it will know how much room it has to work with. The structure has offset and size fields that tell you the offset from the beginning of the structure to the location of a variable sized field (inside the char[1024]) along with a size field that tells you how many bytes to read.
You can look at the Micro$oft MSDN TAPI docs if you want to read more about it. I use a structure to read the fixed fields, but then I have to copy the whole structure to a memory block to read the variable sized fields. On 3/7/07, Daniel Stenning <[EMAIL PROTECTED]> wrote: > > So basically you have a FIXED SIZE C struct where some elements are ( > fixed > size ) pointers to other memory areas ?. Ie the struct itself is still > fixed in size? I never heard of a variable sized C struct. > > On 27/2/07 15:52, "Jim Dossey" <[EMAIL PROTECTED]> wrote: > > > > > I would like to have the ability to reference a block of memory using > both a > > structure and a memoryblock at the same time. I'm using some Windows > > declares that return variable sized structures. They have a fixed > structure > > area at the beginning of the block, which is followed by a variable > area. > > There are pointers in the fixed structure block that point to variable > sized > > fields in the variable block. > > > > There is no FR for this. I'm just wondering if anyone else could use > this > > feature. > _______________________________________________ Unsubscribe or switch delivery mode: <http://www.realsoftware.com/support/listmanager/> Search the archives: <http://support.realsoftware.com/listarchives/lists.html>
