Using drop-down lists – PB Docs 90
Using drop-down lists Drop-down lists are another way to present simple lists of information to the user. You can present your lists with just text (in a DropDownListBox) or with text and pictures (in a DropDownPictureListBox).You add DropDownListBox and DropDownPictureListBox controls to windows in the same way you add other controls: select DropDownListBox or DropDownPictureListBox…
Examining a class definition – PB Docs 90
Examining a class definition This section illustrates how to access a class definition object and how to examine its properties to get information about the class, its scripts, and its variables. Getting a class definition object To work with class information, you need a class definition object. There are two ways to get a ClassDefinition…
Drag-and-drop properties, events, and functions – PB Docs 90
Drag-and-drop properties, events, and functions Drag-and-drop properties Each PowerBuilder control has two drag-and-drop properties: DragAuto DragIcon The DragAuto property DragAuto is a boolean property. Table 10-1: DragAuto property values Value Meaning TRUE When the object is clicked, the control is placed automatically in drag mode. FALSE When the object is clicked, the control is not…
Chapter 18 Using OLE in an Application – PB Docs 90
Chapter 18 Using OLE in an Application About this chapter This chapter describes several ways of implementing OLE in your PowerBuilder applications. Contents Topic OLE support in PowerBuilder OLE controls in a window OLE controls and insertable objects OLE custom controls Programmable OLE Objects OLE objects in scripts OLE information in the Browser Advanced ways…
Terminology review – PB Docs 90
Terminology review Classes, properties, and methods In object-oriented programming, you create reusable classes to perform application processing. These classes include properties and methods that define the class’s behavior. To perform application processing, you create instances of these classes. PowerBuilder implements these concepts as follows: Classes PowerBuilder objects (such as windows, menus, window controls, and user…
About form styles – PB Docs 90
About form styles InfoMaker comes with built-in form styles with which users can build sophisticated forms. You can create your own form styles in PowerBuilder and provide them to InfoMaker users. With these custom form styles, you can enforce certain standards in your forms and provide extra functionality to your InfoMaker users. For example, you…
Building and using a form style – PB Docs 90
Building and using a form style To build and use a form style: Do one of the following: Copy the window and menu from an existing form style to act as your starting point Begin from scratch by creating a new window and placing in it one or two DataWindow controls that have the supported…
Types of arguments for functions and events – PB Docs 90
Types of arguments for functions and events When you define a function or user event, you specify its arguments, their datatypes, and how they are passed. There are three ways to pass an argument: By value Is the default PowerBuilder passes a copy of a by-value argument. Any changes affect the copy, and the original…
Generating EAServer proxy objects – PB Docs 90
Generating EAServer proxy objects About EAServer proxy objects Each EAServer component has a corresponding proxy object in the client application. To access an EAServer component, you need to communicate through the EAServer proxy. An EJB component has two corresponding proxy objects in the client application—one for the home interface and one for the remote interface….
Client- and component-demarcated transactions – PB Docs 90
Client- and component-demarcated transactions Client applications and EAServer components marked as OTS style can create, control, and obtain information about EAServer transactions using functions of the CORBACurrent context service object. The CORBACurrent object provides most of the methods defined for the CORBA Current interface. Two-phase commit Components in a client- or component-demarcated transaction must be…