Mac keychain an C++

[newb4lyfe]

What is the easiest way to write a command in C++ that detects if the mac keychain pops up. I want to write something along the lines of:

if(keychain.isActive(){
//delete a certain file;
}

I'm having an issue on some work machines that is creating keychain problems when a user changes the password on our network.

Thanks in advance for any suggestions