Re: CGDisplayReconfigurationCallBack

FROM : Trygve Inda
DATE : Wed Apr 02 00:12:59 2008

What exactly would I put in here?

It calls into my code with

void DisplayReconfigurationCallBack (CGDirectDisplayID display,
CGDisplayChangeSummaryFlags flags, void *userInfo)
{
    if (flags & kCGDisplayAddFlag)
    {
        // do stuff
    }
    else if (flags & kCGDisplayRemoveFlag)
    {
        // do different stuff
    }
}

Assuming my code does not do anything untold, what could the system do that
would cause it to fail?

Trygve

> It does not say to not use longjmp, it sais to not use longjmp to jump
> outside this function.
>
> Just encapsulate your code in a @try / @catch()  block to ensure that
> even if an exception occurs (@throw use longjmp in the 32 bits
> runtime), it will jump in your catch block and not outside your
> callback.
> In the same way, if you are using C++ call in the call back, you have
> to use a try/catch block to avoid that an exception trigger a non-
> local return.
>
> Le 30 mars 08 à 15:31, Trygve Inda a écrit :