Q:
Is it possible to capture the GPS location of PC that has my desktop app installed?
A:
Desktop pcs do not have GPS sensors.
The best you can do is estimate the location based on the IP address.
Google these words:
geolocation from ip address api
Note however that any PC that is allocated its IP address using DHCP will have a local address. The external IP will be the same for all clients that obtain an IP address dynamically from a DHCP enabled router or wireless access point.
Lianja developer 