RESULT statement

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WLanguage syntax

Structured statements

RESULT statement

Presentation

Example

Statements that can return a value

Other statements used to exit from a loop or from a procedure

Types returned

Multiple return values

See also

RESULT statement

In french: Renvoyer

RESULT is used to exit from the current process (or procedure) and to return a status report.

This status report can correspond to:

a value.
Versions 19 and later
several values. See Multiple return values for more details.
New in version 19
several values. See Multiple return values for more details.
several values. See Multiple return values for more details.

The RESULT statement can be used in:

The closing code of project,
The closing code of window or page,
Versions 19 and later
The closing code of report,
New in version 19
The closing code of report,
The closing code of report,
A procedure (conditional test, FOR, FOR EACH, LOOP or WHILE loop, ...).

Versions 16 and later

This feature is available for Windows Phone applications.

New in version 16

This feature is available for Windows Phone applications.

Versions 18 and later

This feature is available in Windows Store apps mode.

New in version 18

This feature is available in Windows Store apps mode.

Example

// Call to a procedure that returns NOTHING if a problem occurs
// Different process according to the return value
Control_Value is string
Control_Value = MyProcess(Control_Name)
IF Control_Value = "Nothing" THEN
Info("No value was calculated")
ELSE
Info("Value of control: " + Control_Value)
END

// -- MyProcess procedure
PROCEDURE MyProcess(Control)
IF Control..Type = typInputText THEN
RESULT Control..Value
ELSE
RESULT "Nothing"
END

Syntax

Procedure Hide the details

PROCEDURE <Procedure name> ([<Parameter>])
IF <Condition> THEN
RESULT <Value(s) to Return>
ELSE
RESULT <Value(s) to Return>
END

Remarks:

The following operations are performed if <Condition> is fulfilled:
- Return a status report to the calling process. The type and value of <Value to return> depend on the value expected by the process calling the procedure.
- Exit from the statement block.
- Exit from the current process (or procedure).
Versions 19 and later
You have the ability to return several values. See Multiple return values for more details.
New in version 19
You have the ability to return several values. See Multiple return values for more details.
You have the ability to return several values. See Multiple return values for more details.

Code for closing the window, the page or the report Hide the details

RESULT <Value to return>

Remarks:

In this case, <Value to return> must correspond to the expected value during the call to the window, page or report.
Versions 19 and later
You have the ability to return several values. See Multiple return values for more details.
New in version 19
You have the ability to return several values. See Multiple return values for more details.
You have the ability to return several values. See Multiple return values for more details.

Closing code of project Hide the details

RESULT <Value to return>

Remark: In this case, <Value to return> must be an integer. This value can be retrieved by any application. For a WINDEV application, the value returned by another application can be retrieved by ExeRun.

Remarks

Statements that can return a value

Several statements can return a value in a procedure:

IF statement

PROCEDURE <Procedure name> ([<Parameter>])
IF <Condition> THEN
RESULT <Value to return>
ELSE
RESULT <Value to return>
END
FOR statement

PROCEDURE <Procedure name> ([<Parameter>])
FOR <Control variable> = <Initial value> TO <Final value> [STEP <x>]
IF <Condition> THEN RESULT <Value to return>
END
FOR EACH statement

PROCEDURE <Procedure name> ([<Parameter>])
FOR EACH <File> ON <Key item>
...
IF <Condition> THEN RESULT <Value to return>
END
LOOP statement

PROCEDURE <Procedure name> ([<Parameter>])
LOOP
...
IF <Condition> THEN RESULT <Value to return>
...
END
WHILE statement

PROCEDURE <Procedure name> ([<Parameter>])
WHILE <Condition 1>
...
IF <Condition> THEN RESULT <Value to return>
...
END

Versions 19 and later
Remark: These statements can also return several values. See Multiple return values for more details.

New in version 19
Remark: These statements can also return several values. See Multiple return values for more details.

Remark: These statements can also return several values. See Multiple return values for more details.

Other statements used to exit from a loop or from a procedure

Several statements are available:

RETURN: Exit from the loop and exit from the current process (or procedure).
BREAK: Exit from the loop and run the rest of the current process (or procedure).

Close is used to exit from the loop (or procedure) and to close the current window.

Caution: RETURN and RESULT cannot be used in the same process.

Types returned

Versions 15 and later
From version 15, the following types can be used:

structure
dynamic structure
class
advanced type
array
associative array
queue
stack
list

New in version 15
From version 15, the following types can be used:

structure
dynamic structure
class
advanced type
array
associative array
queue
stack
list

From version 15, the following types can be used:

structure
dynamic structure
class
advanced type
array
associative array
queue
stack
list

Versions 19 and later

Multiple return values

A procedure, a function, a class method, or a window can return several values.

The following syntax must be used:

RESULT [<Value 1>, <Value 2>, ... <Value N>]

RETURN = [<Value 1>, <Value 2>, ... <Value N>]

Example:

// Code of the procedure
PROCEDURE MyProc()

// Process
RESULT(1, 2, 3)

// Code for calling the procedure
( x, y, z ) = MyProc()
// x is set to 1, y to 2 and z to 3

Remark:

For a window, Close can also be used to return several values.
In a procedure, all the RESULT or RETURN found in this procedure must return the same number of values.
The multiple returns are not allowed in a stored procedure.
The properties cannot use multiple values.
For a procedure, the returned values can correspond to simple types (integer, boolean, ...) or to complex types (structures, ...).
For a window or for a report, the returned values can correspond to simple types (integer, boolean, ...).
If the procedure, window or report returns several values, it is not required to retrieve all the values. You have the ability to read a single one. For example:
- Reading all the values:
  
  ( x, y, z ) = MyProc()
- Reading a single value:
  - Reading the first value:
    
    (x) = MyProc()
    
    or:
    Versions 20 and later
    
    x = MyProc()
    
    New in version 20
    
    x = MyProc()
    
    x = MyProc()
  - Reading the second value:
    
    (,y) = MyProc()

Types of return values
You have the ability to assign a type to the return values. The syntax is as follows:

PROCEDURE ProcedureName(): ([<Type value 1>, [<Type value 2>, ... , [<Type value N>]]])

Remark: There is no need to specify the type for all return values.

Multiple return value used in parameter
A multiple return value can be passed in parameter to a WLanguage procedure or function.

Example:

PROCEDURE f()
RESULT(1, 2)

PROCEDURE g(x, y)
RESULT x+y

z is int
z = g(f())
// z is set to 3

New in version 19

Multiple return values

A procedure, a function, a class method, or a window can return several values.

The following syntax must be used:

RESULT [<Value 1>, <Value 2>, ... <Value N>]

RETURN = [<Value 1>, <Value 2>, ... <Value N>]

Example:

// Code of the procedure
PROCEDURE MyProc()

// Process
RESULT(1, 2, 3)

// Code for calling the procedure
( x, y, z ) = MyProc()
// x is set to 1, y to 2 and z to 3

Remark:

For a window, Close can also be used to return several values.
In a procedure, all the RESULT or RETURN found in this procedure must return the same number of values.
The multiple returns are not allowed in a stored procedure.
The properties cannot use multiple values.
For a procedure, the returned values can correspond to simple types (integer, boolean, ...) or to complex types (structures, ...).
For a window or for a report, the returned values can correspond to simple types (integer, boolean, ...).
If the procedure, window or report returns several values, it is not required to retrieve all the values. You have the ability to read a single one. For example:
- Reading all the values:
  
  ( x, y, z ) = MyProc()
- Reading a single value:
  - Reading the first value:
    
    (x) = MyProc()
    
    or:
    Versions 20 and later
    
    x = MyProc()
    
    New in version 20
    
    x = MyProc()
    
    x = MyProc()
  - Reading the second value:
    
    (,y) = MyProc()

Types of return values
You have the ability to assign a type to the return values. The syntax is as follows:

PROCEDURE ProcedureName(): ([<Type value 1>, [<Type value 2>, ... , [<Type value N>]]])

Remark: There is no need to specify the type for all return values.

Multiple return value used in parameter
A multiple return value can be passed in parameter to a WLanguage procedure or function.

Example:

PROCEDURE f()
RESULT(1, 2)

PROCEDURE g(x, y)
RESULT x+y

z is int
z = g(f())
// z is set to 3

Multiple return values

A procedure, a function, a class method, or a window can return several values.

The following syntax must be used:

RESULT [<Value 1>, <Value 2>, ... <Value N>]

RETURN = [<Value 1>, <Value 2>, ... <Value N>]

Example:

// Code of the procedure
PROCEDURE MyProc()

// Process
RESULT(1, 2, 3)

// Code for calling the procedure
( x, y, z ) = MyProc()
// x is set to 1, y to 2 and z to 3

Remark:

For a window, Close can also be used to return several values.
In a procedure, all the RESULT or RETURN found in this procedure must return the same number of values.
The multiple returns are not allowed in a stored procedure.
The properties cannot use multiple values.
For a procedure, the returned values can correspond to simple types (integer, boolean, ...) or to complex types (structures, ...).
For a window or for a report, the returned values can correspond to simple types (integer, boolean, ...).
If the procedure, window or report returns several values, it is not required to retrieve all the values. You have the ability to read a single one. For example:
- Reading all the values:
  
  ( x, y, z ) = MyProc()
- Reading a single value:
  - Reading the first value:
    
    (x) = MyProc()
    
    or:
    Versions 20 and later
    
    x = MyProc()
    
    New in version 20
    
    x = MyProc()
    
    x = MyProc()
  - Reading the second value:
    
    (,y) = MyProc()

Types of return values
You have the ability to assign a type to the return values. The syntax is as follows:

PROCEDURE ProcedureName(): ([<Type value 1>, [<Type value 2>, ... , [<Type value N>]]])

Remark: There is no need to specify the type for all return values.

Multiple return value used in parameter
A multiple return value can be passed in parameter to a WLanguage procedure or function.

Example:

PROCEDURE f()
RESULT(1, 2)

PROCEDURE g(x, y)
RESULT x+y

z is int
z = g(f())
// z is set to 3