I have a specific scenario in mind, but I will ask this generally:
Is there a way to make my mobile phone trigger an action on my computer? I am thinkin
It is possible if you can access the Bluetooth HandsFree profile APIs on your PC. If the mobile is HF connected, it will send AT+CLIP packet with the phone number. You will be notified with the incoming phone number. The rest is easy. But your mobile should support CLIP. I am pretty sure all modern mobiles will do that.
If you can write an application which access the Microsoft bluetooth stack this would be easy.