Function JetReadFileInstance
pub unsafe fn JetReadFileInstance(
instance: JET_INSTANCE,
hffile: JET_HANDLE,
pv: *mut c_void,
cb: u32,
pcbactual: Option<*mut u32>,
) -> i32
pub unsafe fn JetReadFileInstance(
instance: JET_INSTANCE,
hffile: JET_HANDLE,
pv: *mut c_void,
cb: u32,
pcbactual: Option<*mut u32>,
) -> i32