Crystal Reports™ 8.5 Developer's Guide

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No Data in Report Event
This application demonstrates the new NoDataInReport event.
The "No Data" event is triggered when the data set in the report is empty. In this
sample, the code applies a filter to the data that causes the report to have no data.
It then traps the NoDataInReport event and displays a message box that allows the
user the option to view the report without any data or just to view a blank page.
Printer Settings
This application demonstrates how to change the report printer settings at runtime
using code.
There are four new report properties that allow you to easily retrieve and set
PaperSize, PaperOrientation, PaperSource, and PrinterDuplex for the report
printer options. All of these are demonstrated.
There is also a new method called PrinterSetup that provides a Windows
standard printer setup window to allow the user to change the printer
properties directly at runtime. This is demonstrated as well.
The two methods are independent of each other. For example, changing the
Windows standard printer setup will not alter the report printer settings and viceversa.
These new properties and the new method give you much more control over
how the report is printed.
Report Object Creation API
This application demonstrates the use of the new Report Object Creation API.
The Creation API functions allow runtime creation of report objects, including text,
databasefield,unboundfield,chart,special,box,cross-tab,BLOBfield,line,
picture, summary, and subreport objects.
You can add these report objects at runtime to an existing report that you
created in the RDC.
You can also create a blank report at runtime and add these objects to that
blank report. This sample demonstrates the second method.
All properties that are normally available for each object at runtime are also
available for the objects you create.
This sample shows you how to create text, database field, unbound field,
summary, picture box and line objects. For information about more advanced uses
oftheCreationAPI,pleaseseetheProAthleteSalariessampleapplication.
Report Variables
This application demonstrates the use of the new Report Variable capability.
24 Crystal Reports Developer’s Guide