[PLUG-Devel] Connect wrapper in c (was OT: C programmers....)

[Scott Harris]

You could do that in several ways:

1) make the g_wiimote object global to the methods:

/* static makes the handle file scope so it will not be visible outside 
of this file */
static g_wiimote handle;
connect(){ connect to wiimote }
main(){ call connect(), perform actions on that handle}

2) or even better pass in the address of the handle and use it:

connect(g_wiimote* handle) { connect to wiimote using *handle }
main() { g_wiimote handle; call connect(&handle); perform actions on handle}

// if you are actully using C++ instead of C then you could pass by 
reference (instead of by pointer).

Regards,
  Scott

James Finstrom wrote:
> Greetings,
>
> The original email is below. but I would like to better explain what I 
> want and I am a C newb so my terminology can be assumed incorrect...
>
> I have a program I am putting together that basicly connects the 
> gphoto library to the cwiid library. I am currently connecting the 
> wiimote in main(). What I want to do is move the connection of the 
> wiimote out of main but still refer to the handle in main.  So right 
> now in main i connect to the wiimote and it creates g_wiimote. I then  
> basicly read/write to g_wiimote. What I want to do is move that block 
> of code that does the connect out of main to a function 
> do_connect_wiimote() which will exicute that block of code and return 
> g_wiimote to main so I can read/write to it.
>
> Thanks in advance for not bashing the newb :)
>
>
> Original users email:
> Greetings all,
>
> I am writing app that allows me to control my canon SLR with my 
> wiimote. I am trying to figure out how to call a function in main that 
> generats a handle then returns the handle to main
>
>
> Concept:
>
> connect(){ connect to wiimote and return handle foo}
>
> main(){ call connect(), get handle, perform actions on that handle}
>
>
> James Finstrom
>
> ------------------------------------------------------------------------
>
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>   

-- 
----------------------------------------------------
 Scott Harris, Principal Software Engineer
 Object Computing, Inc. (OCI)        
 480-752-0042 x207 Arizona
 http://www.ociweb.com

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