exit

Type

control structure

Summary

Stops execution of a handler.

Syntax

exit <handler>

Description

Use the exit control structure to skip the rest of a handler's statements without returning a result.

Form: The exit statement appears on a line by itself, anywhere inside a handler.

You can use an exit control structure in a message handler, function handler, getProp handler, or setProp handler. Usually, exit is used within an if control structure, so that the handler stops if a condition is true and continues if the condition is false.

If the current handler was called from another handler, the calling handler continues executing. The exit statement only stops the current handler, not the calling handler. (To stop all pending handlers, use the exit to top control structure.)

When a handler executes an exit statement, the message, trigger, function call, or getProp call stops and is not passed to the next object in the message path. To halt the current handler and pass the message, trigger, or call on through the message path, use the pass control structure instead. To halt the current handler and return a result, use the return control structure instead.

note

The exit control structure is implemented internally as a command and appears in the commandNames.

Parameters

Name	Type	Description
handler		The name of the handler in which the exit control structure appears.

Examples

if the seconds > timeLimit then exit mouseUp

setProp myCustomProperty pValue
   -- can be used in getProp or setProp handlers
   exit myCustomProperty
end myCustomProperty

Related

command: call

constant: return

control structure: getProp, return, setProp, if, pass, break, on, exit to top, exit repeat, function

function: commandNames

glossary: object, function handler, return, message handler, setProp handler, pass, execute, function call, command, control structure, getProp handler, trigger, getProp call, caller, message path, message, statement, handler

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile