Arthur Hefti

Vor wenigen Stunden kündete Google einen herbstlichen Frühjahrsputz an. Google stellt verschiedene Services ein und führt diese z.T. in andere Services über. Ersatzlos eingestellt wird Google Desktop am 14. September. Dies bedeutet, dass unsere Gadget nicht mehr heruntergeladen und aufdatiert werden können. ... (more)

Using PowerBuilder Assemblies in .NET

PBDJ Feature Story There's a lot of "legacy" PowerBuilder code that you might want to access from .NET applications or perhaps PowerBuilder has some superior functionality that you would like to make use of in a .NET application. Think about how easy it would be to create a report in PowerBuilder with a DataWindow. Of course, PB can provide functionality through Web Services (see my article "Prognos with DataWindow.NET 2.0 and PowerBuilder 11 Web Services" in PBDJ some time ago) but this has its limitations. In the article "PowerBuilder 11's .NET Interoperability" in PBDJ, John S... (more)

Using MS MapPoint in PowerBuilder

Why should you use GIS (Geographic Information System) data in PowerBuilder? You can plan a route for a service technician or a sales person. You can track the positions of the trucks delivering goods and it might allow you to direct a truck to an additional pick up close to its route. You can print driving directions when heading to an unknown place. The following article demonstrates how to use the Microsoft MapPoint control from within PowerBuilder to perform such operations. The MapPoint Control The MapPoint object model contains a lot of objects, but we'll use only a few. Fi... (more)

Encryption in PowerBuilder

Keeping information away from curious eyes is a challenging task. For example, you might need to encrypt data before sending it over the Internet. Or you might be storing some information in a database that not even an administrator is allowed to see. This article provides a brief overview of encryption techniques and shows how to do encryption in PowerBuilder. Short History Encryption goes as far back as ancient Egypt. In 1900 B.C. the Egyptians used a derivation of standard hieroglyphics to make a message more difficult to read. The art of hiding messages improved over the centu... (more)

PowerBuilder - The ClassDefinition Object

In the first article we presented a some theories about the ClassDefinition object and were able to show the libraries of a PB application in a treeview control. This month we'll read the objects from the libraries and inspect their content. When a user expands an entry in the treeview, we check to see if it was expanded once already. If it was, we don't take any action. We code this in the itemexpanding event of the treeview control, where we get the clicked treeviewitem by calling This.GetItem. If it wasn't expanded already, we check to see if the level of the treeviewitem is... (more)