Topic: How there is an information binding in two DW through retrieval argument?
Hello! In advance I apologize for basic questions and some confusion. I am the full beginner, I read and I understand an educational DB under book Getting Started delivered with PowerBuilder 10.5.
There the standard system is under construction of a normal window on which two are allocated DW, whose DW-objects obtain the data from one table. The first DW-object has the tabular idea, the second - Freeform so at navigation on the first DW in the second the data should be replaced, displaying them in more details. And they are replaced! Though I in any way will not understand, how it managed to be made...
In SQL which delivers the data for the second, detailed DW, it is defined retrieval argument (on a key field of the table). But I will not understand, where I had time to establish connection of this argument with relocation on the first DW. We tell, in Lazarus it would be necessary to write a script for relocation event on the first window where value of a key field would be traced, then it would be appropriated retrieval argument and the command on update of the second window moved.
Here I only read a phrase: "When you put this DataWindow object into the tutorial application, you write a script that passes the required argument to the DataWindow automatically".
(In the beginning understood as "When you place this DW-object [object with retrieval argument] in educational application, you write a script which transfers demanded argument to object DW automatically".)
Rummaged all example - I do not see, where this argument is installed and where I wrote this script... Perhaps it is a question what is a script it is written AUTOMATICALLY, at an object location to application?
I in some confusion ...