Hi Joe, That makes sense. Here's what I need, then:
I am using an OS API to register a callback in C++ (specifically, for when HID device events occur), and I need to pass in a function pointer to the callback registration function. I want this function pointer to point to a function that an RB user can write custom code for in their REALbasic app. I've done this before in pure RB code, by creating a module with a globally-accessible method, and calling the callback creator from RB code via declares, using "AddressOf theModuleMethod" as the function pointer. But, I'm not sure how to achieve the same thing from a plugin... Dave. > From: "Joseph J. Strout" <[EMAIL PROTECTED]> > Reply-To: REALbasic Plugins <realbasic-plugins@lists.realsoftware.com> > Date: Fri, 21 Apr 2006 10:54:04 -0600 > To: REALbasic Plugins <realbasic-plugins@lists.realsoftware.com> > Subject: Re: Trying to call a class event via a callback > > At 5:41 PM +0100 4/21/06, Dave Addey wrote: > >> I'm trying to add a new event to a class, and then call that event by >> installing a callback (using part of the Mac OS IOKit). > > Ow! :) As you found, you can't do that. Events can ONLY be called > from the class where they are defined. > > Moreover, how would IOKit know to pass in the object reference that > is any class method's first parameter? > >> Is this the same case from within a plugin too? If so, is there a way for >> me to define a global module method from within the plugin, which would be >> called (in RB) by the callback? > > Sure, why not? I'm not sure I understand this question. Defining > global methods is demonstrated by most of the plugin samples. > > Best, > - Joe > > -- > > Joseph J. Strout > [EMAIL PROTECTED] > _______________________________________________ > Unsubscribe or switch delivery mode: > <http://www.realsoftware.com/support/listmanager/> > > Search the archives of this list here: > <http://support.realsoftware.com/listarchives/lists.html> _______________________________________________ Unsubscribe or switch delivery mode: <http://www.realsoftware.com/support/listmanager/> Search the archives of this list here: <http://support.realsoftware.com/listarchives/lists.html>
