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Object Reference

	Core
	MacOS
	MacOS.AEDesc
	MacOS.AEApp
	MacOS.AEClass
	MacOS.AEColl
	MacOS.FileSpec
	MacOS.OSA
	MacOS.MacOSError

Sending Raw AppleEvents

Responding to AppleEvents

AppleEvent to JavaScript Value Conversion

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MacOS.MacOSError object

The MacOS.MacOSError object is thrown as an exception when MacOS error occures or an AppleEvent fails.

Method/Property	Description
MacOS.MacOSError.toString()	returns the error's message string
message	read-only the error's message string
error	read-only the error's number
offendingObject	read-only the offending object indicated in the AppleEvent's reply
partialResult	read-only the partial result indicated in the AppleEvent's reply
expectedType	read-only the expected type indicating in the AppleEvent's reply

Here is an example of how this object is used in combination with JavaScript's exception handling facilities:

Sample

try {
    MacOS.appSelf().display_dialog("Press Cancel!").button_returned;
}
catch (e) {
    if (e.error == -128 /* userCanceledErr */)
        "Cancel";
    else
        throw e;
}