4D Doc Center : Is record loaded

Home

4D v14.3

Is record loaded


Is record loaded {( aTable )} -> Function result

Parameter	Type	Description
aTable	Table	Table of the record to examine or Default table if this parameter is omitted
Function result	Boolean	True if the record is loaded Otherwise False

Description

The Is record loaded command returns True if aTable’s current record is loaded in the current process.

Instead of using the “Next record” or “Previous record” automatic actions, you can write object methods for these buttons to improve their operation. The “Next” button will display the beginning of the selection if the user is at the end of the selection and the “Previous” button will show the end of the selection when the user is at the beginning of the selection.

  ` Object method of the “Previous” button (without an automatic action)

 If(Form event=On Clicked)

    PREVIOUS RECORD([Group])

    If(Not(Is record loaded([Group])))

       GOTO SELECTED RECORD([Group];Records in selection([Group]))

  `Go to the last record in the selection

    End if

 End if

 

  ` Object method of the “Next” button (without an automatic action)

 If(Form event=On Clicked)

    NEXT RECORD([Group])

    If(Not(Is record loaded([Group])))

       GOTO SELECTED RECORD([Groups];1)

  `Go to the first record in the selection

    End if

 End if

4D v14.3

Is record loaded

Is record loaded

Description

Example