Re: Capturing Message as Invocation Object
Re: Capturing Message as Invocation Object
- Subject: Re: Capturing Message as Invocation Object
- From: Ryan Bates <email@hidden>
- Date: Tue, 16 Mar 2004 11:58:53 -0800
Thanks a ton! It didn't occur to me to override forwardInvocation: in
order to capture the message. The only downside is you cannot capture
methods which the class implements, but that shouldn't be a problem for
what I'm doing.
Ryan
On Mar 16, 2004, at 11:46 AM, Allan Odgaard wrote:
On 16. Mar 2004, at 20:14, Ryan Bates wrote:
NSUndoManager has the incredibly convenient ability to capture a
message as an NSInvocation object using the
"prepareWithInvocationTarget:" method. What is NSUndoManager doing
under the hood?
It probably implements (NSObject):
- (void)forwardInvocation:(NSInvocation *)anInvocation
Overridden by subclasses to forward messages to other objects. When an
object is sent a message for which it has no corresponding method, the
runtime system gives the receiver an opportunity to delegate the
message to another receiver. [...]
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