PowerBuilder: Defining a primary key for data windows

Question

I am creating some events in a base object (class) in PowerBuilder, and the offspring of this base data window need to know what the primary key of this table (or row) is. How do you define a primary key in code?

Answer 1

You can iterate over the list of columns in the data window and check the Key property using descriptive or dot notation:

<DW Control Name>.Describe("<Columnname>.Key")
or
<DW Control Name>.Object.<Columnname>.Key

This allows you to find out whether a column is included in the selected list that you see in the data wizard, in the menu item Rows-> Update Properties-> Unique Columns (s):

Here are the docs for this property:

http://infocenter.sybase.com/help/topic/com.sybase.dc37783_1150/html/dwref/CAIBHFGF.htm

Answer 2

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Answer 3

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