Basic structure of DataWindows
and property expressions in PowerBuilder
Controls in a DataWindow
A DataWindow object is made up of many controls (such as Columns,
Text, Pictures, and Reports). In PowerBuilder scripts, the datatype of
these controls is DWObject. Each DWObject has a set of properties
according to its type. The syntax of a property expression allows you to
address any of these properties.
Object property
A DataWindow property expression uses the Object property of the
DataWindow control to access the DataWindow object. Following the Object
property, you specify a control name and one or more properties.
The simple syntax is:
|
1 |
dwcontrol.Object.dwcontrolname.property |
For example:
|
1 |
dw_1.Object.empname.Resizeable |
For the full syntax, see PowerBuilder syntax for DataWindow
property expressions.
About DataWindow data expressions
Expressions that access data in a DataWindow object using dot
notation use the Object and Data properties. These expressions are
called data expressions (in contrast to property expressions); because
of the intricate syntax for data expressions, they are described
separately, in Accessing Data in
Code.