Forms Help- calling another forms w/ parameters

Question

Hi- I am new to forms development.
When calling a form, I see samples of code that use the 'execute' procedure, and then pass a few parameters.
I try to open a different form, use this syntax, and I get errors...along the lines of the parameters are wrong.
My question- is there a place in the application where I can find a listing of forms I can call, and what parameter names to use?
Thanks

Answer 1

hi
Definitions : FORM parameters are variables of TYPE char,number, or date that you define
at design time.
Let us assume that I am calling form in this script.
** Example:   Calls a form, passing a parameter list if the
**            parameter list exists.
   Here it passes the city_name and City_date;
DECLARE
  pl_id       ParamList; 
  city_name VARCHAR2(30) := 'BANGALORE'; // You can assign dyanamically;
  city_date DATE := SYSDATE;
BEGIN
  ** Try to lookup the 'TEMPDATA' parameter list
  pl_id := Get_Parameter_List('tempdata');
  IF NOT ID_NULL(pl_id) THEN
      Destroy_Parameter_List(pl_id);
  END IF;
  pl_id := CREATE_PARAMETER_LIST('tempdata');
  ADD_PARAMETER(pl_id,'p_city',TEXT_PARAMETER,city);
  ADD_PARAMETER(pl_id,'p_city_date',TEXT_PARAMETER,TO_CHAR(city_date));
  /* Please note that here you can pass only Text i.e., CHAR parameters, that
     means if it is other than CHAR you have to convert into CHAR function */
  CALL_FORM('XYZ_FORM', No_HIDE, NO_REPLACE, NO_QUERY_ONLY,pl_id);
END IF;
In the above program I am calling XYZ_FORM by passing parameter list of "TEMPDATA"
which contains 2 parameters
    1. P_City
    2. P_city_date
When you are receiving these parameters in the XYZ_FORM.
You MUST HAVE these PARAMETERS in the XYZ_FORM.
You can declare like this
1. In XYZ_FORM, Click on PARAMETERS.
2. Go to the property sheet of PARAMETER1
    Change the following things
    i) Name = P_CITY   /* It must be the same name that what you are passing */
    ii) Data Type = CHAR
    iii) Maximum Length = 30 //sample
    iv) Close the parameter sheet.
/* Now you have created for one parameter */
3. Similarly Create one more parameter for P_City_date by clicking "new".
    i)  Name = P_CITY_DATE   /* It must be the same name that what you are passing */
    ii) Data Type = DATE
    iii) Close the parameter sheet.
-- Similarly you can have no. of parameters.
To access the values of the above parameters in the XYZ_FORM
append with :PARAMETER.
That is
You can access P_City in Xyz_form by   :PARAMETER.P_CITY
Similarly for P_City_Date is :PARAMETER.P_CITY_DATE.
I hope this is more than sufficient and it is acceptable to yousarah