Function into_pointer 

pub fn into_pointer<F, P>(function: F) -> *mut c_void
where
    F: FnOnce() -> Option<NonNull<P>>,

Converts a function that returns an Option<NonNull<P>> into a raw C-compatible pointer.

This utility function is used internally to convert Rust’s safe pointer types into C-compatible raw pointers. Returns null_mut() if the function returns None.

Type Parameters

• F - A function that returns Option<NonNull<P>>
• P - The pointer type being converted

Parameters

• Function - The function to execute and convert the result

Returns

A raw C-compatible pointer, or null if the function returns None