How can I obtain the data stored in variables of Calc ?

[Terrence Enger]

I see that four days have passed without anyone biting at your
question.  Perhaps everybody has some of the confusion that I feel.

It might help us to understand your questions if you tell us something
about what you want to accomplish.  If you want to automate some
user-like actions, consider one of the scripting languages that
LibreOffice offers.  If you really want to hack on the C++ code, a
hint about your goal will permit a more focused answer.  If you just
want to understand what is going on, a different kind of answer will
be useful.

On Mon, 2013-05-13 at 07:56 -0700, leo2013 wrote:
> There are two cases which I meet normally. 
> One is creating one or more new data-sheets in one workbook, and then fill
> some data into the cells of these data-sheets; the other is opening one
> *.xlsx (or *.xls,*.slsm,*.xls) file with a amount of data which have been in
> data-sheets of this file already.
> My question: Which structures from source codes will the data be stored in
> on the two cases separately ?