4D v13.4
Displayed line number
- 4D Language Reference
-
- Selection
-
- ALL RECORDS
- APPLY TO SELECTION
- Before selection
- DELETE SELECTION
- DISPLAY SELECTION
- Displayed line number
- End selection
- FIRST RECORD
- GET HIGHLIGHTED RECORDS
- GOTO SELECTED RECORD
- HIGHLIGHT RECORDS
- LAST RECORD
- MODIFY SELECTION
- NEXT RECORD
- ONE RECORD SELECT
- PREVIOUS RECORD
- Records in selection
- REDUCE SELECTION
- SCAN INDEX
- Selected record number
- TRUNCATE TABLE
Displayed line number
| Displayed line number -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| Function result | Longint |
|
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.
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
Product: 4D
Theme: Selection
Number:
897
Modified: 4D v11 SQL
Form event
Selected record number
