PowerBuilder Native Interface Programmers Guide and Reference
PBNI Tool Reference

Description

The PowerBuilder function signature is the internal signature of a PowerBuilder function that is used to identify polymorphisms functions in a class. The pbsig190 tool obtains these function signatures from a PBL.

Syntax

pbsig190 pbl_name

Examples

This command extracts function signatures from one of the PBLs in the Code Examples sample application:

pbsig190 pbexamw1.pbl

Here is some of the output from the previous command:

PB Object Name: w_date_sort
   public subroutine of_sort (string as_Column,
      string as_Order)
      /* QSS */

PB Object Name: w_date_window
   public function boolean of_is_leap_year
      (integer ai_year)
      /* BI */

   public subroutine of_days ()
      /* Q */

PB Object Name: w_dde_server
   public subroutine check_hotlink (checkbox status,
      string data, string item)
      /* QCcheckbox.SS */

PB Object Name: w_dir_treepublic function integer
    wf_collapse_rows (datawindow
      adw_datawindow, long al_startrow)
      /* ICdatawindow.L */
   public function long of_recurse_dir_list (string
      as_path, long al_parent)
      /* LSL */
   public function string of_build_dw_tree
     (long al_handle)
      /* SL */

The following example illustrates the use of a letter code to represent a PowerBuilder system class or a custom class. Consider this function:

function integer of_get_all_sales_orders (Ref s_sales_order astr_order[], date adt_date, integer ai_direction)

For this function, the pbsig190 tool returns the following string. The first argument is an unbounded array of type s_sales_order and is passed by reference:

/* IRCs_sales_order.[]YI */

Usage

The pbsig190 tool generates a string that represents the declaration and signature of all the functions and events in the PBL, including argument types, return types, and passing style. Each function and event is followed by a commented string. You pass the commented string, for example, QSS in the first comment in the previous example, as the last argument to the GetMethodID method.

For example, the following output indicates that the function returns an integer and has a single integer argument passed by reference:

/* IRI */

PowerBuilder arrays

PowerBuilder arrays are indicated with a pair of square brackets [ ] as a suffix. For bounded arrays, the brackets enclose the bounds.

/* IRCdatastore.RS[]SS */

PowerBuilder system or custom class

Additional letter codes represent a PowerBuilder system class or a custom class. The letter C followed by the name of a PowerBuilder object or enumerated class and a period (Cname.) represents an argument or return value of that type.

The following table shows how the output from pbsig190 maps to datatypes and other entities.

The passing style is indicated by a prefix on the type.