Writing application-level scripts – PB Docs 90
Writing application-level scripts When a user runs an application, an Open event is triggered in the Application object. The script you write for the Open event initiates the activity in the application. Typically it sets up the environment and opens the initial window. For a server component, there may be no application-level scripts. When a…
About structures – PB Docs 90
About structures A structure is a collection of one or more related variables of the same or different data types grouped under a single name. In some languages, such as Pascal and COBOL, structures are called records. Structures allow you to refer to related entities as a unit rather than individually. For example, if you…
Searching targets, libraries, and objects – PB Docs 90
Searching targets, libraries, and objects Global search of targets You can search a target to locate where a specified text string is used. For example, you could search for: All scripts that use the SetTransObject function All windows that contain the CommandButton cb_exit (all controls contained in a window are listed in the window definition’s…
Using the Graph presentation style – PB Docs 90
Using the Graph presentation style Instead of embedding a graph in a DataWindow object, you can use the Graph presentation style to create a DataWindow object that is only a graph–the underlying data is not displayed. One advantage of the Graph presentation style is that the graph resizes automatically if users resize the DataWindow control…
About DataWindow objects – PB Docs 90
About DataWindow objects A DataWindow object is an object that you use to retrieve, present, and manipulate data from a relational database or other data source (such as an Excel worksheet or dBASE file). DataWindow objects have knowledge about the data they are retrieving. You can specify display formats, presentation styles, and other data properties…
Chapter 13 Working with Menus – PB Docs 90
Chapter 13 Working with Menus About this chapter You add menus to windows to give your users an easy, intuitive way to select commands and options in your applications. This chapter describes how to define and use menus. Contents Topic About menus and menu items About the Menu painter Building a new menu Defining the…
Working with tables – PB Docs 90
Working with tables When you open the Database painter, the Object view lists all tables in the current database that you have access to (including tables that were not created using PowerBuilder). You can create a new table or alter an existing table. You can also modify table properties and work with indexes and keys….
Filtering rows – PB Docs 90
Filtering rows You can use WHERE and HAVING clauses and retrieval arguments in the SQL SELECT statement for the DataWindow object to limit the data that is retrieved from the database. This reduces retrieval time and space requirements at runtime. However, you may want to further limit the data that displays in the DataWindow object….
Specifying colors – PB Docs 90
Specifying colors You specify a color by specifying a number that represents the color. You can specify the number explicitly or by using an expression that includes the RGB (r, g, b) function. For the numbers and expressions that specify common colors, see Table 23-2. How the number is calculated The formula for combining color…
Rotating controls in a DataWindow object – PB Docs 90
Rotating controls in a DataWindow object Controls that display text such as text controls, columns, and computed fields can be rotated from the original baseline of the text. The Escapement option on the Font property page for the control lets you specify the amount of rotation, also known as escapement. Several other properties of a…