buffer

I have to write a buffer to store some video sequences. The way I know now is to create
a vector such as vector<imagetype*> buffer.
when I push_back the images into the vector.
How can I operate on the images in the buffer?
for example do some addition or substraction
with the images within the buffer?
Thanks if anyone can help me out!

Do you mean 'how do I remove images from the vector and insert images into the vector' ?
If yes and you are using the stl vector then the members insert()and erase() should be what you want.
Otherwise, I don't know what you mean by adding and subtracting images.

yelllowstone,

If you have your image object pointers stored in a vector
and you want to access the objects in the vector you can
access them in several basic ways (provided you know
the vector location of the image pointer):

Using the vector [] operator:
img_vector[2]->DoImageOp();

Using the vector at() method:
img_vector.at(2)->DoImageOp();

Using iterators:
std::vector<img*>::iterator iter = img_vect.begin() + 1;
(*iter)->DoImageOp();

If the location of the image(s) you want are unknown you
can "loop" or "iterate" through the vector using one of the
above access methods.

regards, willchop