I have one application in c++. My solution is not the
most pretty, but it works just fine. I have one file
called app_main.cpp that has all my callback functions
in plain C that I register with pjsua. When the call
comes in (on_incoming_call) I use
pjsua_call_set_user_data to save the pointer to the
object that I have my callback function (the real
one). All my callbacks that are inside app_main.cpp
only get the address of the object with
pjsua_call_get_user_data and then call the real
callback function from this object. Bellow is one
example for the callback that receives dtmf:
static void on_dtmf_digit(pjsua_call_id call_id, int
digit )
{
void *tpjcCallPtr;
tpjcCallPtr = pjsua_call_get_user_data(call_id);
((TPJCall*)tpjcCallPtr)->ReceiveDTMF((char)digit);
}
My object that holds the code for the callback is of
type TPJCall that has a member function called
ReceiveDTMF. It doesn't even need to be static or
anything.
Thiago
> Hi!
>
> I'm trying to add pjsip to a QT C++ application.
> This gives me headaches
> as I have no clue how to make callbacks in C++.
> There are lots of
> different approaches (static member function as
> wrapper, templates ...).
>
> I tried the static member function wrapper with
> logging callbacks but my
> application crashes ~50%.
>
> I wonder if someone have practical tips for my how
> to connect pjsip's
> callbacks to member functions.
>
> thanks
> klaus
>
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