Refnum descriptor: Difference between revisions

Latest revision as of 15:57, 30 January 2021

Refnum descriptor is a kind of type descriptor which stores properties of Reference data type.

The following table lists the sub-type codes used in the type descriptor of the Reference data type.

Sub-Type Code	Refnum Type	Description
0x00	Generic	the generic type 0x00 is generated only by getting the TD of the "Not a Refnum Constant".
0x01	Datalog File Refnum
0x02	Byte Stream File Refnum
0x03	Device Refnum	used in legacy Serial VIs
0x04	Occurence Refnum
0x05	TCP Connection Refnum
0x06	VISA Refnum (Obsolete)	obsolete VISA refnum type up to LabVIEW 5.1
0x07	Automation Refnum
0x08	VI Server Refnum
0x09	Menu Refnum
0x0A	IVI Refnum (Obsolete)	obsolete IVI refnum type up to LabVIEW 5.1
0x0B	IMAQ Session
0x0D	DataSocket Refnum
0x0E	VISA Resource
0x0F	IVI Logical Name
0x10	UDP Connection Refnum
0x11	Notifier Refnum
0x12	Queue Refnum
0x13	IrDA Refnum
0x14	Storage Refnum
0x15	FieldPoint IO Point/Motion Resource
0x16	DAQmx Refnum
0x17	Event Registration Refnum
0x18	.NET Refnum
0x19	User Event Refnum
0x1B	Event Callback
0x1E	LabVIEW Class Instance
0x1F	Bluetooth Refnum
0x20	Data Value Reference
0x21	RT FIFO
0x22	TDMS Refnum

@@ Line 136: / Line 136: @@
 |}
-==See Also==
+==External links==
+* [https://zone.ni.com/reference/en-XX/help/371361R-01/lvhowto/types_of_refnum_controls/ Types of Refnum Controls]
+* [https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019ZT5SAM What is the Structure in Memory of a Reference Number (Refnum) Used by LabVIEW?]
+==See also==
 *[[type descriptor]]
 [[Category:Data types]]
 [[Category:LabVIEW internals]]