TppVariable OnCalc via Code.

rbuser

Hi,

Is it possible to create a TppVariable within the code and assign it
an OnCalc function?

The number of column in my report is variable and created in the code
(JITPipeline), I have a DBCalc total for each column, but these
floating point values then needs to be converted into strings and
displayed...

I canno't think of any way to do this...

Thankx
Chantal

nicocizik

Hi Chantal,

Take a look at the following article/example. It shows how you can
dynamically create multiple variable objects and assign their individual
values by keeping track of them in a TList object.

http://www.digital-metaphors.com/rbWiki//RAP/Fundamentals/How_To...Dynamic_Variables_in_RAP

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Hi Nico,

That example is actually very similar to what I did.
I used the OnCalc of one TppVariable defined on the layout to set the
values in "TppLabels" objects made via the code and kept in a list,
considering they are just strings I didn't use a tppVariable.

My problem was that I wanted to define that TppVariable via the code,
and not on the design window, considering it's not always needed. But
I canno't assign it an OnCalc function...

Only from the report design, when I select the variable I can
create/assign an OnCalc via the object inspector of Delphi...

For example, with a combobox component I can make my own
"OnValueChanged" method and assign it cbxCombo.OnValueChanged =
method.

This doens't work with tppVariables?
I was wondering if I was doing something wrong or if it just works
this way and it's never possible to assign an OnCalc function via the
code.


Chantal

On Thu, 25 Sep 2008 09:40:18 -0600, "Nico Cizik \(Digital Metaphors\)"

nicocizik

Hi Chantal,

Assigning an event to a component is not supported in RAP. One option would
be to create a passthru function that passes the component itself so a
Delphi event can be assigned. Otherwise, you would need to do something
like the example I sent earlier by using the event of another component to
make calculations.

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Thank you!

Chantal

On Tue, 30 Sep 2008 07:17:41 -0600, "Nico Cizik \(Digital Metaphors\)"