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Powerbuilder Documentation Older – Page 2112 – PowerBuilder Library

Powerbuilder Documentation Older

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Handling row errors – PB Docs 70

Handling row errors When a pipeline executes, it may be unable to write particular rows to the destination table. For instance, this could happen with a row that has the same primary key as a row already in the destination table. Using the pipeline-error DataWindow To help you handle such error rows, the pipeline places…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

Performing some final housekeeping – PB Docs 70

Performing some final housekeeping When your application has finished processing pipelines, you need to make sure it takes care of a few cleanup chores. These chores basically involve releasing the resources you obtained at the beginning to support pipeline execution. Garbage collection You should avoid using the DESTROY statement to clean up resources unless you…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

Constant declarations – PB Docs 70

Constant declarations To declare a constant, add the keyword CONSTANT to a standard variable declaration:

Any data type that accepts an assignment in its declaration can be a constant. For this reason, blobs cannot be constants. Even though identifiers in PowerScript are not case sensitive, the declarations shown here use uppercase as a convention for…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

OLE custom controls – PB Docs 70

OLE custom controls The OLE control button in the Controls menu gives you the option of inserting an object or a custom control in an OLE container. When you select an OLE custom control (ActiveX control), you fix the container’s type and contents. You cannot choose later to insert an object and you can’t select…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

Programmable OLE Objects – PB Docs 70

Programmable OLE Objects You don’t need to place an OLE control on a window to manipulate an OLE object in a script. If the object doesn’t need to be visible in your PowerBuilder application, you can create an OLE object independent of a control, connect to the server application, and call functions and set properties…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

OLE objects in scripts – PB Docs 70

OLE objects in scripts This chapter has described the three ways to use OLE in a window or user object. You have learned about: Inserting an object in an OLE control Placing an ActiveX control in an OLE custom control Declaring an OLEObject variable and connecting to an OLE object In scripts, you can manipulate…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

OLE information in the Browser – PB Docs 70

OLE information in the Browser The system stores information about the OLE server applications and OLE custom controls installed on your computer in the registry. PowerBuilder reads the registry and displays the registration information for all registered OLE servers and custom controls. To view the OLE information: Click the Browser button on the PowerBar. Click…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

Advanced ways to manipulate OLE objects – PB Docs 70

Advanced ways to manipulate OLE objects In addition to OLE objects in controls and objects for automation, PowerBuilder provides an interface to the underpinnings of OLE data storage. OLE data is stored in objects called streams, which live in objects called storages. Streams and storages are analogous to the files and directories of a file…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

Using a user object as an automation server – PB Docs 70

Using a user object as an automation server Accessing a registered user object as an automation server involves these steps: Create the object you will access. Build the object’s runtime library. Register the object. Write code in the client that connects to and uses the object. Creating a class user object to be a server…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older

Using PowerBuilder as an automation server – PB Docs 70

Using PowerBuilder as an automation server Using PowerBuilder.Application as an automation server involves these steps: Define the objects you will access. Build the runtime libraries for those objects. Write code in the client that connects to PowerBuilder, creates the objects, and accesses their methods and properties. Creating the userobjects you will access How you define…

Powerbuilder Documentation 7.0 PB Docs 70 Powerbuilder Application Techniques Powerbuilder Documentation Powerbuilder Documentation 7.0 Powerbuilder Documentation Older