Function dpiDeqOptions_getVisibility 

pub unsafe extern "C" fn dpiDeqOptions_getVisibility(
    options: *mut dpiDeqOptions,
    value: *mut dpiVisibility,
) -> c_int

Returns whether the message being dequeued is part of the current transaction or constitutes a transaction on its own.

The function returns DPI_SUCCESS for success and DPI_FAILURE for failure.