In each programming environment, you can use methods and sometimes expressions to access the data and properties of a DataWindow object.
Methods for single items of data These include GetItemString for data and Describe and Modify for properties. These methods are available in all environments.
DataWindow data expressions These let you access single items and blocks of data. You can access data in a single column, data in selected rows, and ranges of rows and columns.
Data expressions have a variety of syntaxes depending on the amount of data you want to access. Data expressions are not supported by the DataWindow Web Control for ActiveX.
You can get and set data values using the following syntax:
dwcontrol.Object.Data [ startrownum, startcolnum, endrownum, endcolnum ]
For a list of syntaxes, see “Syntaxes for DataWindow data expressions”.
Methods for properties These are Describe and Modify. These methods are available in all environments.
DataWindow property expressions These let you get and set the values of properties of the DataWindow definition and of controls contained within the definition, such as columns and text labels. Property expressions are not supported by the DataWindow Web Control for ActiveX.
Property expressions take this form:
dwcontrol.Object.columnname.columnproperty = value
This chapter discusses techniques for accessing data with emphasis on data expressions.
For information on accessing properties using methods or property expressions, see Chapter 5, “Accessing DataWindow Object Properties in Code.”
