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Resolved Find who is ancestor of PowerObject (WindowObject)

  1. How-to
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  1. Yuri Denshchik
    Yuri Denshchik
  2. PowerBuilder
  3. Thursday, 20 June 2019 22:07 PM UTC

I need to find the ancestor name of Window.control[x]. The control is added to the window by using OpenWithParm() 

Please advice

Thank you,

Yuri
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Responses (1)
Michael Kramer
Michael Kramer Accepted Answer Pending Moderation
  1. Thursday, 20 June 2019 23:27 PM UTC
  2. PowerBuilder
  3. # 1

Hi Yuri,

The metadata of PB objects is found using the ClassDefinition.

 

Any class in PB is a descendant of PowerObject so every object has a property = ClassDefinition.

Now, ClassDefinition itself has two very important properties in this scenario:

  • string Name ==> Class Name of this class -- (equal to ClassName( ) for currently instantiated class)
  • ClassDefinition Ancestor ==> Ancestor class -- hence, this is where inheritance is defined

Class definitions is a whole advanced topic of its own. The best way to get started in my point of view is to put a breakpoint anywhere in any script of your control.

As soon as debugger hits the breakpoint, start inspecting current object, its ClassDefinition, and everything relevant that the ClassDefinition refers to.

 

HTH /Michael

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