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 FileMaker Pro Custom Functions

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VisiblePortalRows ( objName ; portalName )

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  Average rating: 4.2  (39 votes)
  Discuss this Custom Function

Fabrice Nordmann, 1-more-thing

Returns a list of visible row numbers of a portal

Sample Input:
VisiblePortalRows ( aField ; aPortal )
Sample Output:
4¶5¶6¶7¶8 if user scrolled down to row number 4 and the portal is displaying 5 rows.

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


No matter where the user scrolled, this function lets you know exactly what rows are visible.
The Objname parameter means you'll need to have a named object in the portal rows. The portal also has to be named.

FileMaker 8.5 required.

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


Great Custom Function, but I felt the chance for recursion failure due to missing object names really needed an explicit test and escape prior to running recursion. So I added the following lines to my version, perhaps this comment will help anyone else do it without having to re-invent this:

Case (
// Test for valid Object names
PatternCount ( LayoutObjectNames ( Get ( FileName ) ; Get ( LayoutName ) ) & ¶ ; objName & ¶ ) <= 0 ; "objName missing" ;
PatternCount ( LayoutObjectNames ( Get ( FileName ) ; Get ( LayoutName ) ) & ¶ ; portalName & ¶ ) <= 0 ; "portalName missing" ;
// Object names Exist, continue

... Continue existing Let () and add and ending ")" to close the above Case.

Jonathan Mickelson, Los Angeles
August 18, 2009 6:06pm

Doesn't seem to work with FM12, getting a "?"
Worked great with FM11

silba, Chicago
January 28, 2013 1:42pm

if you get a "?" try giving a object within the portal a name, that solved the problem for me on a similar portal Row Count CF

justin, Riverview NB
November 26, 2013 6:39pm

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