CacheEntry::Invalidate

Invalidates a cache entry so that the next set or get operation results in communication with the instrument.

void Invalidate();

Example

The following example demonstrates use of the Invalidate function.

C++

Copy

ViStatus _VI_FUNC acme4321_set_FREQUENCY(ViSession Vi, ViConstString RepCapIdentifier, ViReal64 AttributeValue)
{
    auto status = VI_SUCCESS;

    // We want to couple the frequency to the bandwidth, so we must invalidate the cached bandwidth 
    // whenever the frequency changes.
    // 

    // Retrieve the cache entry for the Bandwidth attribute
    // 
    auto entry = GetCacheEntry<ViReal64>(Vi, ACME4321_ATTR_BANDWIDTH);

    // Invalidate the entry
    // 
    entry.Invalidate();

    return status;
}