WMK_PROT_RW_ITEM_DATA Struct Reference

API Struct for reading and writing items. More...

Public Attributes
WMK_OPCPIPE_HANDLE	AppTopicHandle
	app topic handle (call pipe -> app; server side only)
WMK_OPCPIPE_HANDLE	PipeTopicHandle
	pipe topic handle (call app -> pipe; server side only)
WMK_OPCPIPE_HANDLE	AppItemHandle
	app item handle (call pipe -> app)
WMK_OPCPIPE_HANDLE	PipeItemHandle
	pipe item handle (call app -> pipe)
W_UINT16	DataType
	TYP_USE_xx data type (write request, read response)
W_UINT16	DataFlags
	TYP_FLAGS_xx data flags (write request, read response)
W_UINT32	Quality
	item quality, Quality values, conforming to OPC (responses only)
W_UINT32	DataLen
	length of data (write request, read response)
void *	Data
	actual Data (write request, read response)
WMK_PTR_CONFIRM	Confirm
	confirm to be called if data is no longer needed; 0 if Data may not be used after returning from call (write request, read response)
opcpipe_timeval	Tv
	read timestamp (responses only, in UTC)

Detailed Description

API Struct for reading and writing items.