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Property Attributes (WIA)

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All item objects have properties. The properties have attributes. For instance, property attributes indicate whether a property is read from, written to, or deleted. They also indicate the valid property values. The following constants are valid property attributes:

Property Attribute Meaning
WIA_PROP_CACHEABLE The device can cache the property's value.
WIA_PROP_FLAG The property has a list of legal flag values. Flag values are combined using a bitwise OR operation.
WIA_PROP_LIST The property has a list of legal values.
WIA_PROP_NONE The property does not have any valid values associated with it.
WIA_PROP_RANGE The property has a range of valid values.
WIA_PROP_READ The application can read the property's value.
WIA_PROP_RW The application can read and write the property's value.
WIA_PROP_SYNC_REQUIRED Do not use.
WIA_PROP_WRITE The application can write the property's value.