Type Alias visa_sys::ViHndlr

pub type ViHndlr = Option<unsafe extern "system" fn(vi: ViSession, eventType: ViEventType, event: ViEvent, userHandle: ViAddr) -> ViStatus>;

Aliased Type

enum ViHndlr {
    None,
    Some(unsafe extern "system" fn(_: u32, _: u32, _: u32, _: *mut c_void) -> i32),
}

Variants

None

No value.

Some(unsafe extern "system" fn(_: u32, _: u32, _: u32, _: *mut c_void) -> i32)

Some value of type T.