8.4.1 Expressions as Values
RDMLX supports the use of expressions in many parameters and properties.
EXECUTE Command
You can now use expressions as the value of the With_Parms parameter in the Execute command, thus eliminating the need for additional commands to prepare the required value. For example:
Execute Subroutine(Routine2) With_Parms(#STD_DESC ('B' + #Phbn_2.Caption + 'B') 'AaBbCcDd')
MSGTXT Parameter of Various Commands
The MSGTXT parameter can have as a value an expression which contains more than a single item or the expression is enclosed in parentheses. For example:
Message Msgtxt('Message: name is ' + #fullname)
Mthroutine Name(Trace)
Define_Map For(*INPUT) Class(#STD_TEXT) Name(#InTextOne)
Define_Map For(*INPUT) Class(#STD_TEXT) Name(#InTextTwo)
Message Msgtxt(#InTextOne.Value + " " + #InTextTwo.Value)
Endroutine
SET Command
The values assigned to properties selected on a SET command support an expression:
SET #COM_OWNER Left(#COM_OWNER.Left + 2) Top(#COM_OWNER.Top + 2)
INVOKE Command
The values assigned to method parameters selected on an INVOKE command support an expression:
INVOKE #COM_OWNER.MethodOne ParmOne(#COM_OWNER.Left + 2) ParmTwo(#COM_OWNER.Top + 2)
SIGNAL Command
The values assigned to event parameters selected on a SIGNAL command support an expression:
SIGNAL EventOne ParmOne(#COM_OWNER.Left + 2) ParmTwo(#COM_OWNER.Top + 2)
SET_REF Command
You can use expressions in SET_REF commands:
Set_Ref #CurrentDepartment (*dynamic #COM_OWNER.dosomething(#STD_NUM))
Set_Ref #CurrentDepartment (*dynamic #COM_OWNER.dosomething(iNumber := 10))
MTHROUTINE NAME(dosomething )
DEFINE_MAP FOR( *INPUT ) CLASS( #STD_NUM) name(#iNumber)
DEFINE_MAP FOR(*RESULT) CLASS(#DEPTMENT) NAME(#oDepartment) PASS(*BY_REFERENCE)
Set_Ref #oDepartment (*create_As #DEPTMENT)
ENDROUTINE