There are two names to be aware of when you are working with a DataWindow:
The name of the DataWindow control
The name of the DataWindow object associated with the control
The DataWindow control name When you place a DataWindow control in a window or form, it gets a default name. You should change the name to be something meaningful for your application.
In PowerBuilder, the name of the control has traditionally had a prefix of dw_. This is a useful convention to observe in any development environment. For example, if the DataWindow control lists customers, you might want to name it dw_customer.
Using the name
In code, always refer to a DataWindow by the name of the control (such
as dw_customer). Do not refer to the DataWindow object that
is in the control.
The DataWindow object name To avoid confusion, you should use different prefixes for DataWindow objects and DataWindow controls. The prefix d_ is commonly used for DataWindow objects. For example, if the name of the DataWindow control is dw_customer, you might want to name the corresponding DataWindow object d_customer.
