pfnUserCallback
pfnUserCallback is a naming convention used in C and C++ libraries to describe a pointer to a user-implemented callback function. The term denotes a function pointer type that the library expects the application to supply so the library can notify the application about events, data availability, or other asynchronous activity.
The actual signature of a pfnUserCallback is defined by the API and can vary between libraries. A
Usage typically involves registering the callback with the library, along with a userData pointer that the
Important considerations include thread safety and lifetime management. Callbacks may be invoked from different threads and
In practice, pfnUserCallback enables asynchronous and event-driven interactions between a library and its users, providing a