KB132727 - How to use a user-defined function to calculate percentages in a report group footer in Visual FoxPro

Article ID: 132727

Article Last Modified on 2/17/2005

Microsoft Visual FoxPro 3.0 Standard Edition
Microsoft Visual FoxPro 7.0 Professional Edition
Microsoft Visual FoxPro 8.0 Professional Edition

This article was previously published under Q132727

SUMMARY

To calculate percentages of a group total in report using the Report Writer, you must create a UDF (user defined function).

MORE INFORMATION

The FoxPro Report Writer calculates totals in a top down manner. To get a detail item's percentage of a total that resides in the group footer band, the total must first be calculated in the group header. This can be accomplished by using the following code in a UDF:

   SET TALK OFF
   PUBLIC msum     && initialize public variable for sum total
   msum=0
   y=RECNO()       && store record number to variable so total from
   * previous group is not added on
   x=<field name>  && store field which is grouped to variable
   SUM <numeric field name> FOR  x=<field name> TO msum
   GO y
   RETURN ""

Put this UDF in the group header. Add a text box to the group footer to display the results of the Msum variable.

For more information about UDFs, please see the following article in the Microsoft Knowledge Base:

113754 "Syntax Error" When Verifying UDF() in Report Writer

Additional query words: VFoxWin

Keywords: KB132727