How to add objects to panel in one class from another class

Question

Hi this is what i am trying to do. I have a drag and adrop tool working where the users and select objects on a small panel and drag them to another panel called the tpan. What i want to do is create another class, which creates objects and now i want to display these objects on the tpan. So say i have a class DisplayTpan(), this class is used to display the objects which have been dragged from the small panel, and objects on this panel have mouselisteners attached, so that these objects can be moved around on the tpan. I have created another class called creatObj(), and from this class i want to add objects to the tpan. The DisplayTpan class extends a Jpanel, would this be he case for the CreateObj() class? In the CreateClass i have made a call to DisplayTpan t = new DisplayTPan();
t.add(object);
But this does not add the object to the panel, any ideas on how it should be done?
Problem number two i have is say, I have two objects created on that oanel, i now want to draw a line t connect the two objects, this is just simply a call to the drawLine function but how would it be possible to add a ,mouselistener to that line, so it can be extended moved around etc? Any help much appreciated thanks.

Answer 1

Try to convert the PL/SQL code from Forms trigger into a PL/SQL library(.PLL),
and then attach that PLL in your forms.
Note that all Forms objects should be referenced indirectly, for example,
you have to rewrite
:B1.DEPT_CODE := :B2.DEPT_CODE;
:B3.TOTAL_AMOUNT := 100;
==>
copy('B2.DEPT_NO','B1.DEPT_NO');
copy('100','B3.TOTAL_AMOUNT');
This is the best way to share PL/SQL code among Oracle Forms.