4D v16.3

Displayed line number

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4D v16.3
Displayed line number

Displayed line number 


 

Displayed line number -> Function result 
Parameter Type   Description
Function result  Longint in Number of row being displayed

The Displayed line number command only works with the On Display Detail form event. It returns the number of the row being processed while a list of records or list box rows is displayed on screen. If Displayed line number is called other than when displaying a list or a list box, it returns 0.

In the case of a list of records, when the displayed row is not empty (when it is linked to a record), the value returned by Displayed line number is identical to the value returned by Selected record number.

Like Selected record number, Displayed line number starts at 1. This command is useful if you want to process each row of a list form or list box displayed on screen, including empty rows.

Example  

This example lets you apply an alternating color to a list form displayed on screen, even for rows without records:

  `List form method
 If(Form event=On Display Detail)
    If(Displayed line number% 2=0)
  `Black on white for even row text
       OBJECT SET RGB COLORS([Table 1]Field1;-1;0x00FFFFFF)
    Else
  `Black on light blue for odd row text
       OBJECT SET RGB COLORS([Table 1]Field1;-1;0x00E0E0FF)
    End if
 End if



See also 

Form event
Selected record number

 
PROPERTIES 

Product: 4D
Theme: Selection
Number: 897

 
HISTORY 

Modified: 4D v11 SQL

 
ARTICLE USAGE

4D Language Reference ( 4D v16)
4D Language Reference ( 4D v16.1)
4D Language Reference ( 4D v16.2)
4D Language Reference ( 4D v16.3)