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From: ahodgson@athena.mit.edu (Antony Hodgson)
Newsgroups: comp.lang.c++
Subject: Interrupt member functions
Message-ID: <1991Feb19.191356.25123@athena.mit.edu>
Date: 19 Feb 91 19:13:56 GMT
Sender: news@athena.mit.edu (News system)
Organization: Massachusetts Institute of Technology
Lines: 32

Is it possible to have a class member function of type "interrupt"?
E.g., I want to do something like the following:

class InterruptHandler
	{
	public:	InterruptHandler();
		void install( int InterruptNumber );
		void interrupt handler();
		...
	};

void InterruptHandler::install( int InterruptNumber )
	{
		...
		setvect( InterruptNumber, InterruptHandler::handler );
		...
	}

Turbo C++ accepts the class declaration, but returns a type mismatch
message when it hits the setvect call.  Apparently, handler is not
something it can deal with.  If I define another handler routine that's
not a member function, all is well (e.g., void altHandler();) and I
can properly install it.  What am I missing here?

Another thing I would like to be able to do would be to pass an argument
to handler when it gets invoked (e.g., handler( someObject O ) ).  Is there
any way this can be done?

I will be very grateful for help with these questions.

Tony Hodgson
ahodgson@hstbme.mit.edu