Learn TDL and Customize Tally Accounting Software: Example 33: Using "Control" Attribute at FIELD definition level

Thursday, August 9, 2007

Example 33: Using "Control" Attribute at FIELD definition level

This post illustrates how to use "Control" Attribute at FIELD definition level.

Download TDL33

;; PRODUCT: TDL33.TXT
;;=========================================================================
;; Add a new menu-item to the Gateway of Tally. Note that the Action is
;; ALTER (and not display as used generally)


[#Menu:Gateway of Tally]
    Item : Example 33 : Alter : My Report


[Report: My Report]
    Form: My Form


[Form: My Form]
    Part: My Part


[Part: My Part]
    Line: My Line


[Line: My Line]
    Fields: My Field1


[Field: MyField1]
    Use: Name Field


    ;;Display a message if the Field Value is Empty
    Control  : EmptyValueMsg : $$IsEmpty:$$Value


;;Global formula
[System: Formula]
    EmptyValueMsg : $$LocaleString:"Cannot be empty.\nPlease enter some value."

Notes:-
1) $$IsEmpty checks whether the parameter passed is Empty or not.
Syntax: $$IsEmpty:
2) $$Value
Returns the value of the current field
3) \n is used for line-feed