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Creating a DataWindow Object
1. Choose a presentation style
2. Choose a datasource
3. Describe the result set
4. Design the format for data presentation and validation
5. Use simultaneous preview during design, if desired
Data sources
Relational
Quick Select
SQL Select
Query
Stored Proced
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Summary
PowerBuilder provides:
Presentation styles
Options for colors, borders, fonts, and other characteristics for columns and for column headings
You use the DataWindow painter to design the user interface.
Summary
The DataWindow workspace is divided into bands:
Header
Detail
Summary
Fo
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Relating DataWindows to Databases
Setting the Transaction Object for a DataWindow Object
Retrieving Data
Coding a Complete Retrieval Transaction
The DataWindow object is associated with a database through a transaction object using the SetTransObject( ) function.
The DataWindow control Retri
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Access one item by specifying row and column numbers
Format:
dwcontrol.object.data[startrownum, startcolnum]
dwcontrol.object.data [ startrownum, startcolnum, endrownum, endcolnum ]
Example:
long ll_emp_id
ll_emp_id = dw_emp.object.data[1,2]
Data retrieved using a DataWindow object is he
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Summary
Objects, events, and properties are key to developing applications with PowerBuilder.
Properties are characteristics of an object.
Events permit the object to recognize and respond to actions.
You can build application objects, DataWindow objects, menus, structures, user objects, and win
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