Re: Sending message to Objective-C object from C file
Re: Sending message to Objective-C object from C file
- Subject: Re: Sending message to Objective-C object from C file
- From: "Alexander v. Below" <email@hidden>
- Date: Sat, 28 Jul 2007 12:16:25 +0200
You would do that like you would do it with C++, or any other object
oriented language.
For example, you can pass the object into your library as a parameter,
and then call methods on it
void myCFunction (void * myParam, id myObject)
{
[myObject doSomething:myParam];
}
A fairly common technique you will also find int Apple Sample Code --
however, the other way around: A C++ Method is called from QuickTimes
C-based callback mechanism.
Alex
P.S.: Some people are on a lot of mailing lists. When you cross-post,
these people - like me - will get your message several times. Please
do not do that.
On 28.07.2007, at 11:58, seyed mehdi nazemi wrote:
Hi everyone,
I am an experienced programmer but quite new in Mac OS programming.
I am developing a Cocoa application. I have an old C library files
which I want to reuse in this application. Part of that C library
file plays an audio file using another Audio library file. I want to
replace functionality of that Audio library file with QuickTime.
So I have created a Controller Objective-C object that includes
QTMovieViewer and can use that to play an audio file. Now my
question is how to send message to that Objective-C object from a C
file in my old library.
Thanks in advance
Luca.
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