This page describes Tcl® calls for handling received AppleEvents and AppleEvent descriptor type coercion requests. For information on the associated ToolBox calls and data types, see INSIDE MACINTOSH: Interapplication Communication.


Handling AppleEvent Descriptor Coercions

tclAE::installCoercionHandler

Tcl wrapper for ToolBox AEInstallCoercionHandler call.

Synopsis

tclAE::installCoercionHandler fromType toType coercionHandlerProc

Result

None.

Description

This call allows Tcl procs to act as AEDesc coercion handlers.

tclAE::getCoercionHandler

Tcl wrapper for ToolBox AEGetCoercionHandler call.

Synopsis

tclAE::getCoercionHandler fromType toType

Result

Name of Tcl coercion proc.

Description

The Tcl® coercion hash table is searched for the proc mapped by fromType and toType.

If the AEM has a registered coercion handler that is not a Tcl proc, the Result will be empty, but no error is thrown. Tell me how you want this to work!!!

Throws OSErr -1717 (errAEHandlerNotFound) if there is no entry in the coercion hash table.

tclAE::removeCoercionHandler

Tcl wrapper for ToolBox AERemoveCoercionHandler call.

Synopsis

tclAE::getCoercionHandler fromType toType coercionHandlerProc

Result

None.

Description

The Tcl® coercion hash table is searched for the proc mapped by fromType and toType and matched with coercionHandlerProc. Although the fromType and toType parameters would be sufficient to identify the handler to be removed, providing the coercionHandlerProc parameter is a safeguard to ensure that you remove the correct handler.

Throws OSErr -1717 (errAEHandlerNotFound) if there is no matching entry in the Tcl®Õs coercion hash table.

Handling AppleEvents

tclAE::installEventHandler

Tcl wrapper for ToolBox AEInstallEventHandler call.

Synopsis

tclAE::installEventHandler aeclass aeeventID eventHandlerProc

Result

None.

Description

This call allows a Tcl proc to act as an AppleEvent handler.

tclAE::getEventHandler

Tcl wrapper for ToolBox AEGetEventHandler call.

Synopsis

tclAE::getEventHandler aeclass aeeventID

Result

Name of Tcl AppleEvent handler proc.

Description

The Tcl® event handler hash table is searched for the proc mapped by aeclass and aeeventID.

If the AEM has an event handler that is not a Tcl proc, the Result will be empty, but no error is thrown. Tell me how you want this to work!!!

Throws OSErr -1717 (errAEHandlerNotFound) if there is no entry in the event handler hash table.

tclAE::removeEventHandler

Tcl wrapper for ToolBox AEGetEventHandler call.

Synopsis

tclAE::getCoercionHandler aeclass aeeventID eventHandlerProc

Result

None.

Description

The Tcl® event handler hash table is searched for the proc mapped by this aeclass and aeeventID and matched with eventHandlerProc. Although the aeclass and aeeventID parameters would be sufficient to identify the handler to be removed, providing the eventHandlerProc parameter is a safeguard to ensure that you remove the correct handler.

Throws OSErr -1717 (errAEHandlerNotFound) if there is no matching entry in the coercion hash table.

Path Conversion

tclAE::getHFSPath

Convert POSIX path to HFS path

Synopsis

tclAE::getHFSPath /some/posix/path

Result

HFS path

Description

This call converts a POSIX path to an HFS path

tclAE::getPOSIXPath

Convert HFS path to POSIX path

Synopsis

tclAE::getPOSIXPath some:hfs:path

Result

POSIX path

Description

This call converts an HFS path to a POSIX path


Copyright © 1999Š2007 Jonathan E. Guyer
All rights reserved.

Last modified Tuesday, July 10, 2007 8:54:09 AM

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