VI class

VI Server Class Information
Return to VI Server Class Hierarchy
Class Name	VI class
Class ID	2
Scope	Basic Development Environment
Class Inheritance	This class is a top-level class.
Class Children	VI FacadeVI MethodVI PolymorphicVI SubsystemVI VI FacadeVI MethodVI PolymorphicVI SubsystemVI

The VI class is a class in the VI Server Class Hierarchy, (see also VI Server).

Properties

Show/Hide VI Properties Table

Legend
R/W	Readable/Writable Permissions
RTE	Available in the Run-Time Engine
Basic Development Environment
VI Scripting
Private
Deprecated

VI Properties Table

Property ID	Long Name (English)	Description	R/W	RTE
1F4	VI Name	Name of the VI file. If a LabVIEW project library owns the VI, the property returns the qualified name of the VI, which includes the project library filename.	Read/Write	Yes (Read Only)
1F5	VI Path	Path to the VI file.	Read Only	Yes (Read Only)
1F6	VI Description	Description of the VI that appears in the Context Help window when you move the cursor over the VI icon and in VI documentation you generate.	Read/Write	Yes (Read Only)
1F7	History:Entire Text	Returns all the text that was added to the VI revision history.	Read Only	No
1F9	Front Panel Window:Title Bar Visible	Indicates whether to display a title bar on the front panel while the VI runs.	Read/Write	Yes
1FA	Front Panel Window:Closeable	Indicates whether the close button in the title bar is disabled and the Close item in the File menu is disabled.	Read/Write	Yes
1FB	Front Panel Window:OldResizable	Specifies whether or not the user can resize the front panel during execution. This property can be set on non-editable VIs.	Read/Write	Yes
1FC	Front Panel Window:Allow Runtime PopUp	Indicates whether to display shortcut menus for front panel objects while the VI runs. If you do not display default run-time shortcut menus, you can continue to include customized shortcut menus.	Read/Write	Yes
1FD	Front Panel Window:Highlight Return Button	Indicates whether to highlight Boolean controls that have a shortcut key of <Enter>.	Read/Write	Yes
1FE	Front Panel Window:Size to Screen (Deprecated)	Indicates whether to automatically size the front panel to fit the screen.	Read/Write	Yes
1FF	Front Panel Window:Auto Center (Deprecated)	Specifies whether to automatically center the front panel window on the computer screen each time the VI runs. If FALSE, the front panel appears on the screen where you last positioned the front panel.	Read/Write	Yes
200	Front Panel Window:Show Scroll Bars		Read/Write	Yes
201	Front Panel Window:Show Menu Bar	Indicates whether to display the menu bar on the front panel while the VI runs.	Read/Write	Yes
202	Tool Bar:Visible	Indicates whether to display the toolbar while the VI runs.	Read/Write	Yes
203	Tool Bar:Show Run Button	Indicates whether to display the Run button on the toolbar while the VI runs.	Read/Write	Yes
204	Tool Bar:Show Free Run Button	Indicates whether to display the Run Continuously button on the toolbar while the VI runs.	Read/Write	Yes
205	Tool Bar:Show Abort Button	Indicates whether to display the Abort Execution button on the toolbar while the VI runs.	Read/Write	Yes
206	Execution:Allow Debugging	If TRUE, you can use debugging tools on the VI. For example, you can set breakpoints, create probes, enable execution highlighting, and single-step through execution. Set this property to FALSE to disable use of debugging tools, reduce memory requirements, and to improve performance slightly for the VI.	Read/Write	Yes (Read Only)
208	Front Panel Window:Is Dialog		Read/Write	Yes
209	Execution:Show Front Panel On Load	Indicates whether to show the front panel when the VI is loaded.	Read/Write	Yes (Read Only)
20A	Execution:Show Front Panel On Call	Indicates whether to show the front panel when the VI is called.	Read/Write	Yes
20B	Execution:Close After Call	Indicates whether to close the front panel after the VI runs.	Read/Write	Yes
20C	Execution:Run When Opened	Indicates whether to run the VI when it opens.	Read/Write	Yes (Read Only)
20D	Execution:Is Reentrant	Indicates whether a VI can be reentrant.	Read/Write	Yes (Read Only)
20E	Execution:Priority	Indicates the priority of the VI when it runs in parallel with other tasks.	Read/Write	Yes (Read Only)
20F	History:Use Defaults	Indicates whether to use the global default history or to use the values entered in other history properties.	Read/Write	No
210	History:Always Add Comments At Save	Indicates whether to add a comment to the VI revision history every time the VI is saved.	Read/Write	No
211	History:Prompt for Comments At Close	Indicates whether to prompt for a VI revision history comment when the VI closes.	Read/Write	No
212	History:Prompt for Comments At Save	Indicates whether to prompt for a VI revision history comment when the VI is saved.	Read/Write	No
213	History:Record Application Comments	Indicates whether to add comments to the VI revision history when certain events occur, such as conversion to a new version of LabVIEW, subVI changes, and changes to the name or path of the VI.	Read/Write	No
214	Help:Document Tag	Index keyword or HTML filename for a topic in the compiled help file to which the VI is linked.	Read/Write	Yes
215	Help:Document Path	Path or symbolic path to an HTML file (.htm or .html) or compiled help file (.chm or .hlp) to which the VI is linked.	Read/Write	Yes
216	Front Panel Window:Open		Read/Write	Yes
217	Front Panel Window:Is Frontmost	Writing TRUE to this value brings the front panel to the front. This property applies only in the application instance of the calling VI. Writing FALSE to this value has no effect. If you read this property, it indicates whether the front panel window is the front window (ignoring floating windows).	Read/Write	Yes
218	Front Panel Window:Window Bounds	The four elements in the cluster are the top, left, bottom, and right values of the front panel window, which includes the interior region, scroll bars, title bar, menu bar, and toolbar. They are in global screen coordinates, that is, the numbers refer to coordinates within a computer monitor's screen (rather than an open window).	Read/Write	Yes
219	Modifications:VI Modifications Bitset Old		Read Only	Yes
21A	Modifications:Front Panel Mods Bitset	Indicates whether changes were made to the front panel since the VI was saved. If the value is zero, no changes where made. If the value is nonzero, changes were made.	Read Only	Yes (Read Only)
21B	Modifications:Block Diagram Mods Bitset	Indicates whether changes were made to the block diagram since the VI was saved or opened, depending on which was last. If the value is zero, no changes were made. If the value is nonzero, changes were made.	Read Only	No
21C	Metrics:Code Size	Amount of memory used for VI code in bytes.	Read Only	Yes (Read Only)
21D	Metrics:Total Data Size	Amount of memory allocated for data in bytes.	Read Only	Yes (Read Only)
21E	Metrics:Size of Front Panel	Size of the front panel in bytes.	Read Only	Yes (Read Only)
21F	Metrics:Size of Block Diagram	Size of the block diagram in bytes.	Read Only	Yes (Read Only)
220	Callers' Names	Returns a list of all the loaded VIs that call the referenced VI.	Read Only	Yes (Read Only)
221	Callees' Names		Read Only	Yes
225	Auto Logging:Log File Path	Path of the datalog file in which front panel data and a time stamp are written.	Read/Write	Yes
226	Auto Logging:Log at Finish	Indicates whether to write front panel values to a datalog file after the VI runs.	Read/Write	Yes
227	Auto Logging:Print at Finish	Indicates whether to print the front panel after the VI runs.	Read/Write	Yes
228	Front Panel Window:Origin		Read/Write	Yes
229	Front Panel Window:Title	String that appears in the title bar. This string does not have to match the VI filename.	Read/Write	Yes
22A	Connector Pane:Set	Sets the connector pane of the VI to match the connector pane of the VI reference input.	Write Only	No
22B	Execution:Suspend On Call	Indicates whether LabVIEW suspends the execution of the VI when calling it as a subVI. Use this property carefully with reentrant VIs.	Read/Write	Yes (Read Only)
22C	Front Panel Window:Panel Bounds	The four elements in the cluster are the top, left, bottom, and right values of the interior portion of the front panel, not including the scroll bars, title bar, menu bar, and toolbar. The cluster elements are in global screen coordinates, which are the numbers that refer to coordinates within a computer monitor's screen (rather than an open window).	Read/Write	Yes
22D	Execution:State	Indicates the execution state of the VI.	Read Only	Yes (Read Only)
22E	Edit Mode On Open	If TRUE, the VI opens in edit mode. If FALSE, the VI opens in run mode, and the title bar, menu bar, and toolbar do not appear.	Read/Write	Yes
22F	Execution:Preferred Exec System	Indicates the execution system in which the VI runs.	Read/Write	Yes (Read Only)
230	Modifications:User Changes		Read Only	No
231	Front Panel Window:Custom Title	Indicates whether the VI has a custom title string. Write FALSE to remove the custom title string.	Read/Write	Yes
232	VI Type	Indicates the type of VI.	Read Only	Yes (Read Only)
234	History:Revision Number	Current revision number of the VI.	Read/Write	No
235	Connector Pane:Data (Deprecated)		Read Only	Yes
236	Metrics:Advanced		Read Only	No
237	Block Diagram Window:Open	Opens or closes the block diagram window.	Read/Write	No
238	Block Diagram Window:Window Bounds	Gets or sets the bounds for a block diagram window.	Read/Write	No
239	Connector Pane:Old Type Descriptor		Read Only	Yes
23A	Tool Kit Attr		Read/Write	No
23B	Front Panel RefNum TD		Read Only	No
23C	Block Diagram	Returns a reference to the block diagram of the VI. This property is not available in stand-alone applications.	Read Only	No
23D	Front Panel	Reference to the front panel of a VI.	Read Only	Yes (Read Only)
23E	Connector Pane:Reference	Returns a reference to the connector pane of the VI.	Read Only	Yes (Read Only)
23F	Front Panel Window:Keep Window Proportions	Indicates whether the front panel window adjusts its size in proportion with a change in monitor resolution. The window changes size so it covers the same percentage of the screen that it covered at its original resolution.	Read/Write	Yes
240	Modifications:VI Signatures		Read Only	Yes
241	Is Instance	Returns whether or not the VI is an Express VI instance.	Read/Write	No
242	Automatic Error Handling	If TRUE, enables automatic error handling for a VI.	Read/Write	No
243	Block Diagram Window:Origin	Gets or sets the vertical and horizontal coordinates in the upper left-hand corner of the block diagram.	Read/Write	No
244	Run-Time Menu Path	When read, this property returns the run-time menu path of the VI. When written, this property updates the run-time menu path of the VI. If the VI is running when you write this property, it updates the menu with data from the new path.	Read/Write	Yes
245	Front Panel Window:Is Floating		Read/Write	Yes
246	RunVILocal		Read/Write	Yes
247	Front Panel Window:Minimizable	Indicates whether the user can minimize the front panel window while the VI runs.	Read/Write	Yes
248	Front Panel Window:Resizable	Indicates whether the user can resize the front panel window while the VI runs.	Read/Write	Yes
249	Expand When Dropped As SubVI	Expands to show terminals when dropped as a subVI.	Read/Write	No
24A	Printing:Page Orientation	Gets or sets the page orientation to use when printing the VI.	Read/Write	Yes
24B	Printing:Page Headers?	If TRUE, LabVIEW prints headers for the VI. Use the Printing:Header Content properties in this class to customize the contents of the headers.	Read/Write	Yes
24C	Printing:Front Panel Scaling?	If TRUE, LabVIEW scales the front panel to fit on the printed page.	Read/Write	Yes
24D	Printing:Margins	Gets or sets the page margins to use when printing the VI in inches or centimeters.	Read/Write	Yes
24E	Printing:Header Content:VI Name?	If TRUE, LabVIEW includes the VI name in the headers for the VI. Use the Printing:Page Headers? property to set whether LabVIEW prints the headers for the VI.	Read/Write	Yes
250	Printing:Header Content:Date Printed?	If TRUE, LabVIEW includes the date printed in the headers for the VI. Use the Printing:Page Headers? property to set whether LabVIEW prints the headers for the VI.	Read/Write	Yes
251	Printing:Header Content:Modify Date?	If TRUE, LabVIEW includes the last modified date in the headers for the VI. Use the Printing:Page Headers? property to set whether LabVIEW prints the headers for the VI.	Read/Write	Yes
252	Printing:Header Content:Page Number?	If TRUE, LabVIEW includes the page number in the headers for the VI. Use the Printing:Page Headers? property to set whether LabVIEW prints the headers for the VI.	Read/Write	Yes
253	Printing:Header Content:VI Icon?	If TRUE, LabVIEW includes the VI icon in the headers for the VI. Use the Printing:Page Headers? property to set whether LabVIEW prints the headers for the VI.	Read/Write	Yes
254	Printing:Header Content:VI Path?	If TRUE, LabVIEW includes the VI path in the headers for the VI. Use the Printing:Page Headers? property to set whether LabVIEW prints the headers for the VI.	Read/Write	Yes
255	Purgative		Read/Write	Yes
256	Control VI Type	Specifies whether a control VI is a control, a typedef, or a strict typedef. This property is valid for control VIs only.	Read/Write	Yes (Read Only)
257	VI Linker Errors		Read Only	Yes
258	Hide Instance VI Caption On Drop		Read/Write	No
259	Front Panel Window:Behavior	Sets the behavior of the front panel window. Valid values include 0 (Invalid), 1 (Default), 2 (Floating), 3 (Floating/Auto-Hide), and 4 (Modal).	Read/Write	Yes
260	Front Panel Window:State	Current state of the front panel window.	Read/Write	Yes
262	Printing:Block Diagram Scaling?	If TRUE, LabVIEW scales the block diagram to fit on the printed page.	Read/Write	Yes
263	Suppress Instance VI Halo		Read/Write	Yes
264	Is System VI		Read/Write	Yes
265	Front Panel Window:Minimum Size	Minimum size of the front panel window in pixels. If Front Panel Window:Resizable is TRUE, the user cannot resize the front panel smaller than the width and height you wire to this property.	Read/Write	Yes
266	Connector Pane:Checksum v1 (Deprecated)		Read Only	Yes
267	Front Panel Window:OS Window		Read Only	Yes
268	Block Diagram Window:OS Window		Read Only	No
269	Modifications:VI User Code GUID		Read Only	Yes
26A	Is Probe	Returns TRUE if the VI is running as a probe and the probe VI is open.	Read Only	No
26B	Suppress Data Manager		Read/Write	Yes
26C	Suppress Transact Info		Read/Write	Yes
26D	Execution:Retain Wire Values	Reads or writes the Retain Wire Values setting of the VI. This property works on clone VIs, unlike the Highlight? property of the TopLevelDiagram object, which always only works on the original reentrant VI.	Read/Write	No
26E	Is XNode VI		Read/Write	Yes
26F	Owning Application	Returns a reference to the application that owns the VI. Be sure and close this reference afterward.	Read Only	Yes (Read Only)
271	Front Panel Window:Window		Read Only	Yes
272	Block Diagram Window:Window		Read Only	No
273	Front Panel Window:Transparency	Sets the window transparency level of the VI. The level of transparency is a percentage where 0 is opaque and 100 is invisible. This property returns an error if you specify a value outside the range of 0 to 100. If you set the transparency level to 100, the VI becomes invisible and uncontrollable from the front panel. You must stop the VI on the block diagram for the front panel of the VI to become visible. You must set the Front Panel Window:Run VI Transparently property to TRUE for this property to have any effect. The default value for the Front Panel Window:Run VI Transparently property is FALSE, in which changing this property has no effect.	Read/Write	Yes
274	Front Panel Window:Run VI Transparently	Sets the VI to use a semi-transparent window style when running. Set the level of transparency using the Front Panel Window:Transparency property.	Read/Write	Yes
275	Front Panel Window:Monitor	The monitor on which the front panel window appears, if you have multiple monitors. (Windows) The value 0 is the primary monitor. (OS X) The value 1 is the primary monitor.	Read/Write	Yes
276	Library	Returns the name of the LabVIEW project library, XControl, or LabVIEW class that owns the VI. If no library, XControl, or class owns the VI, the property returns Not a Refnum.	Read Only	No
277	Context:Has Edits In Another Context		Read Only	Yes
278	Context:Has Edits In This Context		Read Only	Yes
279	Context:Is Reserved In Other Context		Read Only	Yes
27A	Context:Is Reserved In This Context		Read Only	Yes
27B	Help:Examples Exist		Read/Write	No
27C	BD Master Wizard		Read Only	No
27D	Connector Pane:DataType	Returns the data type of the connector pane as variant data. Connector panes for VIs have a VI data type. Connector panes for polymorphic VIs have a PolyVI data type. Connector panes for custom controls, global variables, and type definitions have the data type of the control.	Read Only	Yes (Read Only)
27E	Overload Info		Read/Write	No
27F	Connector Pane:Checksum v2 (Deprecated)		Read Only	Yes
280	Callees' Paths		Read Only	Yes
281	Callers' Paths		Read Only	Yes
282	VI Compile Time		Read Only	No
283	Auto Preallocate Arrays and Strings	Get or set the Autopreallocate arrays and strings setting on VIs. This is used by the FPGA module to optimize array and string operations by forcing LabVIEW to preallocate memory at compile time rather than dynamically allocating memory at run time.	Read/Write	Yes
284	No Clone If Instance VI		Read/Write	Yes
285	VI Clone Name	Name of the clone of a reentrant VI. Returns an error if the VI is not a clone.	Read Only	Yes
286	Is Clone VI	Returns TRUE if the VI is a clone of a reentrant VI.	Read Only	Yes
287	Suppress Type Prop		Read/Write	No
288	Execution:Reentrancy Type	Indicates the type of reentrancy LabVIEW uses for a reentrant VI.	Read/Write	Yes (Read Only)
289	Statechart:Supress Parse		Read/Write	No
28A	Statechart:Is Sub Panel Editable		Read/Write	Yes
28B	C Code Generation:Generate Guard Code		Read/Write	Yes
28C	C Code Generation:Generate Serial Only		Read/Write	Yes
28D	C Code Generation:Generate Integer Only		Read/Write	Yes
28E	C Code Generation:Generate C Function Calls		Read/Write	Yes
28F	C Code Generation:Use Stack Variables		Read/Write	Yes
290	Item ID		Read/Write	Yes
291	Metrics:Front Panel Loaded	Specifies whether the front panel of the VI is in memory. The front panel can be in memory even if the window is not open.	Read Only	Yes
292	Metrics:Block Diagram Loaded	Specifies whether the block diagram of the VI is in memory. The block diagram can be in memory even if the window is not open.	Read Only	Yes
293	Library:Version		Read Only	Yes
294	C Code Generation:Expression Folding		Read/Write	Yes
295	Library:Private		Read Only	No
296	Is Skinned		Read/Write	Yes
297	Block Diagram Window:State	Current state of the block diagram window.	Read Only	Yes
298	Modifications:VI Modifications Bitset	Indicates if changes were made to the VI since the VI was saved. If the value is zero, no changes were made. If the value is nonzero, changes were made.	Read Only	Yes (Read Only)
299	Ladder VI Needs Scripting		Read/Write	Yes
29B	C Code Generation:Inline SubVI		Read/Write	Yes
29C	Do Not Show Save Changes Dialog		Read/Write	No
29F	Front Panel Window:Native Window		Read Only	Yes
2A0	Block Diagram Window:Native Window		Read Only	No
2A1	Front Panel Window:Window Interface		Read Only	Yes
2A2	Block Diagram Window:Window Interface		Read Only	No
2A3	Is Generic		Read Only	Yes
2A4	Is VI Paused?	Specifies whether the execution of the VI is paused. A TRUE value indicates that the VI is paused. A FALSE value indicates that the VI is not paused or that it is not running.	Read Only	No
2A5	Number of Non-Proxy Callers		Read Only	Yes
2A6	Compiler:Generated Code Profiling Settings		Read/Write	No
2A7	Compiler:Generated Code Profiling Result		Read Only	No
2A8	Contains Compiled Code	Sets or returns whether the VI includes compiled code.	Read/Write	Yes (Read Only)
2A9	Is In Packed Library	Returns TRUE if a packed project library contains the VI.	Read Only	Yes
2AA	Execution:Inline SubVI	Specifies whether to inline the subVI into its calling VIs.	Read/Write	No
2AB	Execution:Inline Is Allowed	Returns TRUE if you can inline this subVI into its calling VIs.	Read Only	No
2AC	Execution:SSE Runtime Optimization		Read/Write	No
2AD	Has MathScript Nodes		Read Only	No
2AE	Execution:Inline SubVI If Possible		Read/Write	No
2AF	Execution:Compiled With SSE		Read Only	Yes
2B0	Terminal Bounds[]	Returns an array of terminal bounds for the connector pane of the referenced VI. The bounds for each terminal are represented as a cluster of integers that indicate the position of each edge of the terminal rectangle.	Read Only	Yes
2B1	Tagged And Not Edited		Read/Write	No
2B2	Connector Pane:Checksum Ignore Dynamic Dispatch v1 (Deprecated)		Read Only	Yes
2B3	Compiled:Code Complexity	Returns the complexity of the referenced VI in relation to the Compiler optimizations slider on the Environment page of the Options dialog box. By comparing these two values, you can determine whether LabVIEW prioritizes editor responsiveness or execution speed when compiling this VI.	Read Only	Yes
2B4	Compiled:Last Compiled With	Returns the level of compiler optimizations that LabVIEW last used to compile this VI. The value corresponds to whether the complexity of the VI was greater or less than the threshold at which LabVIEW begins limiting compiler optimizations to prioritize editor responsiveness.	Read Only	Yes
2B5	Inline Callees		Read Only	Yes
2B6	Library:Version	Returns the version of the library that contains the VI you specify.	Read Only	Yes
2B7	Metrics:Number of clones		Read Only	Yes
2B8	Execution:Inline Enum		Read/Write	No
2B9	Execution:Did Compiler Or User Approve Inlining		Read Only	No
2BA	Help:Document Web URL	URL for the web-based help topic to link to a VI from the Detailed help link in the Context Help window.	Read/Write	Yes
2BB	Help:Use Web URL	Indicates whether to link to a web-based help file from the Detailed help link in the Context Help window for a VI.	Read/Write	Yes
2BC	Execution:Shrink Large Buffers		Read/Write	Yes
2BD	Is Running Interactively	Returns TRUE if the VI is running interactively on the target device.	Read Only	Yes
2BE	Execution:Shrink Large Buffer Threshold		Read/Write	Yes
2BF	Execution Highlighting?	Reads or writes the execution highlighting setting of the VI. This property works on clone VIs, unlike the Highlight? property of the TopLevelDiagram object, which always only works on the original reentrant VI.	Read/Write	No
2C1	Did Recompile InThis Version		Read Only	Yes
2C2	Saved Version		Read Only	Yes
2C3	Front Panel Window:Alignment Grid Size	Reads or writes the size of the alignment grid squares on the front panel of the VI.	Read/Write	No
2C4	Block Diagram Window:Alignment Grid Size	Reads or writes the size of the alignment grid squares on the block diagram of the VI.	Read/Write	No
2C5	Connector Pane:Checksum v3		Read Only	Yes
2C6	Connector Pane:Checksum Ignore Dynamic Dispatch v2		Read Only	Yes

Methods

Show/Hide VI Methods Table

Legend
RTE	Available in the Run-Time Engine
Basic Development Environment
VI Scripting
Private
Deprecated

VI Methods Table

Property ID	Long Name (English)	Description	RTE
3E8	VI Strings:Export	Exports the following strings about VI and front panel objects to a tagged text file: VI name and description, object caption labels, object free labels, default data (string, table, path, and array default data), private data (listbox item names, table row and column headers, graph plot names, graph cursor names, graph annotation names, and tab control page captions), and polymorphic VI data (instance names in the polymorphic VI and selector shortcut menus).	No
3E9	VI Strings:Import	Imports the following strings about VI and front panel objects from a tagged text file: VI name and description, object caption labels, object free labels, default data (string, table, path, and array default data), private data (listbox item names, table row and column headers, graph plot names, graph cursor names, graph annotation names, and tab control page captions), and polymorphic VI data (instance names in the polymorphic VI and selector shortcut menus).	Yes
3EA	Save:Instrument	Saves a VI that is not currently running and synchronizes the VI with the edited version in other application instances before saving.	No
3EB	Run VI	Starts the VI execution, similar to the Run button. This method is different than calling a VI because it uses the current values of all front panel controls for execution rather than using data passed in through parameters. This method also ignores the Execution:Show Front Panel On Call property of a VI and the Execution:Close After Call property.	Yes
3EC	Abort VI	Aborts the execution of a top-level VI.	Yes
3ED	Print:VI To Printer	Prints the VI information to a printer.	Yes
3EE	Print:VI To HTML	Saves the VI information to an HTML file and saves the graphics in external files. You can use the Open URL in Default Browser VI to display the HTML file in the default Web browser.	No
3EF	Print:VI To RTF	Saves the VI information to an RTF file.	No
3F0	Print:VI To Text	Saves the VI information to a text file. You cannot save the icon, connector pane, front panel, block diagram, subVI icons, and VI hierarchy to text.	No
3F1	Control Value:Set [Flattened] (Deprecated)		Yes
3F2	Control Value:Get [Flattened] (Deprecated)		Yes
3F3	Default Values:Make Current Default	Changes the defaults of all controls on the front panel to be the current values. This method is available only in edit mode.	No
3F4	Default Values:Reinitialize All To Default	Changes the current values of all controls on the front panel to their defaults.	Yes
3F8	Front Panel:Old Get Image		Yes
3FA	Revert VI	Discards changes and reloads a VI from disk.	No
3FB	Print:Panel To Printer	Prints just the front panel to the current printer. You cannot use this method to print a block diagram, list of controls, or polymorphic VI front panel.	Yes
3FC	Control Value:Get All [Flattened] (Deprecated)		Yes
3FD	Lock State:Get	Returns the lock state of the VI and indicates whether the password for the VI is in the password cache.	Yes
3FE	Lock State:Set	Sets the lock state of a VI. If interactive is FALSE (default), you can use password to either unlock a password-protected VI or set the password of an unprotected VI. If interactive is TRUE, LabVIEW ignores password and displays a dialog box that prompts you to change the lock state.	No
3FF	Save:Instrument (Private)		No
400	Save:For Previous	Saves a copy of the VI that is readable by LabVIEW version 8.0 and later. If you save a password-protected VI for a previous LabVIEW version, you must enter the password. You can enter the password programmatically as an input on the Open VI Reference function.	No
401	Empty	Empties the front panel and block diagram of the VI.	No
402	Transaction:Begin Undo	Begins an undo transaction on a VI.	No
403	Transaction:End Undo	Ends an undo transaction on a VI.	No
404	Set Front Panel Scaling Mode		Yes
405	Get Front Panel Scaling Mode		Yes
407	VI Icon:Set From File	Sets the image of a VI icon from a file. LabVIEW creates a user layer called VI Icon for the image and deletes any other existing icon information from the Icon Editor dialog box.	No
408	Front Panel:Open In Window		Yes
409	Tag:Remove Tags		Yes
40A	Tag:Set Tags		Yes
40B	Tag:Set Persistence		Yes
40C	Tag:Remove All Tags		Yes
40D	Tag:Set Tag		Yes
40E	Tag:Get Tag		Yes
40F	Tag:Remove Tag		Yes
410	Block Diagram:Remove Bad Wires	Removes all the broken wires on the block diagram of the VI.	No
411	Fake Exec State		Yes
412	Generate VHDL		No
413	Save:Run-Time Menu	Saves the run-time menu to a file specified by Path. This method works only when the VI is running. It saves only menu items with valid tags.	No
414	Disconnect Polys And Typedefs		No
415	Print:Panel To PostScript	Prints the panel of the VI to the specified PostScript file.	Yes
416	Export Interface (Deprecated)		Yes
417	Create Constant or Control		Yes
418	VI Icon:Save To File	Saves an image of the VI icon to a file.	No
419	Clear History	Clears the revision history of the referenced VI.	No
41A	Save:To Buffer		Yes
41B	Control Value:Set	Sets the value of a named control or indicator of the variant. You can wire a value of any data type to this method. You do not have to use the To Variant function to convert the data to a variant data type.	Yes
41C	Control Value:Get	Gets the value of a named control or indicator as variant data. Use the Variant to Data function to convert the data to another LabVIEW data type.	Yes
41D	Control Value:Get All	Gets the values of all controls or indicators in a VI as variant data. This method returns an array of clusters that contains control and indicator names and their values as variant data. Use the Variant to Data function to convert the data to another LabVIEW data type.	Yes
41E	Replicate Conpane (Old Type Desc)		Yes
41F	Save:Target Instrument		No
420	Block Diagram:Open In Window		Yes
421	VI Icon:Get As Image Data	Returns the VI icon as a cluster of image data so you can draw it as a picture using the Draw Flattened Pixmap VI or save the image to a file using the Graphics Formats VIs.	Yes
422	VI Icon:Set From Image Data	Sets a VI icon from image data you specify. LabVIEW creates a user layer called VI Icon for the image and deletes any other existing icon information from the Icon Editor dialog box.	No
423	Front Panel:Get Image	Returns an image of the front panel as a flattened pixmap. Use the Front Panel:Get Image Scaled method to return an image of the front panel and scale it proportionally according to the maximum width and height you wire to the method.	Yes
424	Front Panel:Old Open		Yes
425	Front Panel:Close	Closes the front panel window.	Yes
426	Front Panel:Get Image Scaled	Returns an image of the front panel and scales it proportionally according to the maximum width and height you wire to the method. This method is similar to the Front Panel:Get Image method.	Yes
427	VI Hierarchy:Get Signature		Yes
428	Transaction:Undo	Undoes the last operation. This method is similar to selecting Edit»Undo.	No
429	Transaction:Redo	Redoes the last operation. This is similar to selecting Edit»Redo.	No
42A	Transaction:Fail	Fails the current transaction and deletes the undo information for the transaction.	No
42B	VI Strings:Export Private		No
42C	Block Diagram:Get Image Scaled	Returns an image of the block diagram and scales it proportionally according to the maximum width and height you wire to the method. For example, if the image of the block diagram is 200 by 200 pixels and you wire a value of 50 to maximum width and a value of 100 to maximum height, this method returns an image that is 50 by 50 pixels. If you do not wire a value to maximum width or maximum height, the image retains its actual size.	No
42D	Get Conpane Image	Returns the connector pane image, as it appears in the Context Help window, as a cluster of image data so you can draw it as a picture using the Draw Flattened Pixmap VI or save the image to a file using the Graphics Formats VIs.	Yes
42E	Remote Panel:Lock Control	Returns control of the front panel to the server and queues any requests from clients to control the front panel. LabVIEW ignores this method if the front panel is already locked.	Yes
42F	Remote Panel:Unlock Control	If the front panel is locked, this method grants control to the next client in the queue. If no clients are in the queue, the method unlocks the front panel. LabVIEW ignores this method if the front panel is already unlocked.	Yes
430	Remote Panel:Client Connections	Returns an array of clusters containing connection information about the clients viewing or controlling the VI.	Yes
431	Remote Panel:Close Connection To Client	Closes a remote front panel connection to a client.	Yes
432	User Edits:Allow		Yes
433	User Edits:Block		Yes
434	Front Panel:Set Close If Lonely		Yes
435	VI Hierarchy:Get User GUID		Yes
436	Generate C Code		Yes
437	Cause Type Propagation		Yes
438	Front Panel:Open	Opens the front panel window. If the front panel is already open, this method changes the state of the front panel window to the state you wire to this method.	Yes
439	Block Diagram:Set Mod		No
43A	Front Panel:Set Mod		No
43B	Adapt Nodes Private		No
43C	Adapt Nodes	Allows LabVIEW to replace overloaded nodes with more appropriate implementations. For example, if you script an Add function and wire a Matrix control to it, LabVIEW breaks the wire. If you call Adapt Nodes, the Add function might be replaced with a Matrix Add VI. Operator overloading will not occur during scripting. You must call this method for Overloading to happen.	No
43E	Synchronize In All Contexts		Yes
43F	Enter Text		Yes
440	Generate C Code Variant		Yes
441	Front Panel:Center	Specifies whether to automatically center the front panel window on the computer screen.	Yes
442	Set Is Instance (Deprecated)		No
443	Create from Reference	Creates a constant or control using a constant or control reference as a template.	No
444	Create from Data Type (Deprecated)	Creates a control or constant of the data type you specify. LabVIEW always creates a control initially, even if you configure Style to create a constant or indicator. To change the type of the new object, use the Indicator property.	No
445	Front Panel:Run-Time Position:Get Position	Returns the default position of the front panel window at run-time.	Yes
446	Front Panel:Run-Time Position:Unchanged	Configures the VI to maintain the position of its front panel window when the VI runs.	Yes
447	Front Panel:Run-Time Position:Centered	Configures the referenced VI to center its front panel every time the VI runs. If the VI is running when you call this method, the change does not take effect until the next time the VI runs.	Yes
448	Front Panel:Run-Time Position:Maximized	Configures a VI to maximize its front panel every time the VI runs. If the VI is running when you call this method, the change does not take effect until the next time the VI runs.	Yes
449	Front Panel:Run-Time Position:Minimized	Sets a VI to minimize its front panel every time the VI runs. If the VI is running when you call this method, the change does not take effect until the next time the VI runs.	Yes
44A	Front Panel:Run-Time Position:Custom	Configures the referenced VI to open its front panel in a custom position every time the VI runs. If the VI is running when you call this method, the change does not take effect until the next time the VI runs.	Yes
44B	Disconnect From Library	Disconnects a VI that a LabVIEW project library owns from the owning project library.	No
44C	Set VI Mod (Deprecated)		No
44D	Replicate Conpane	Make the connector pane of the VI Reference match the given connector pane.	Yes
44E	Add To AutoSave Pending List		No
44F	Remove Breakpoints		Yes
450	Save:Hierarchy for Previous		Yes
451	Save:Instrument (No Sync)		No
452	Get Errors		Yes
453	Tag:Get Names		Yes
454	Give Temporary Unsaved Name		No
455	Set Online Edit		Yes
457	Control VI Apply Changes	Apply changes made to a control VI. This method returns an error if used on non-control VIs.	Yes
458	Set Path		No
459	Set Filename		Yes
45A	Save:Copy As System		Yes
45C	Save:Instrument and Callers Debug		No
45D	Invoke Built in Menu Item (Not Implemented)		Yes
45E	Begin Scripting (Not Implemented)		Yes
45F	End Scripting (Not Implemented)		Yes
460	Move Objects	Moves the objects by the offset amount of pixels.	No
461	Get Menu Item State (Not Implemented)		Yes
462	Backup:Suppress (Not Implemented)		Yes
463	Backup:Unsuppress (Not Implemented)		Yes
464	Find Control with Key Focus	Return a reference to the control that currently has key focus. If there is not a control with key focus in the target VI, Not a Refnum is returned.	Yes
465	Set VI Mod		No
466	Compile:VI	Compiles the VI and optionally the entire VI hierarchy of that VI.	Yes
467	Run VI And Deploy		Yes
468	Deploy VI		Yes
469	LadderVI Clear Ladder Editor		Yes
46A	Control Value:Get Default		Yes
46B	Control Value:Get Array Element Default		Yes
46C	Get Named Instance VI		Yes
46D	Code Coverage:Reset		No
46E	Code Coverage:Percentage		No
46F	Code Coverage:Uncovered Diagrams		No
470	Control Value:Get Type		Yes
471	Save:Interactive		No
472	Set Is Instance		No
473	Refresh Error Window Entry		Yes
474	Block Diagram:Clean Up	Cleans up the block diagram of the VI by rearranging and resizing its objects and signals to improve readability. You also can select Edit»Clean Up Diagram to clean up the block diagram.	Yes
477	Front Panel:Open In Native Window		Yes
478	Block Diagram:Open In Native Window		Yes
479	Detect Parallel Loops	Detects parallel loops in the VI.	No
47A	Get VI Dependencies (Names and Paths)	This method returns the names and paths of the VI dependencies of a VI. You can use this method to return a specific subset of the total set of VI dependencies of a VI. This method does not return non-VI dependencies, such as project libraries, XControls, classes, and statecharts.	Yes
47B	State Chart Instantiate VI		No
47C	Transfer VI Cleanup Proc		Yes
47D	Save:VI Hierarchy to Folder		No
47E	Library:Get Previous VI from Library		Yes
47F	Library:Get Next VI from Library		Yes
480	Pause VI	Pauses or unpauses the VI execution.	No
481	Debugging:Step Into	Single-steps through a VI to help you debug the VI. To use this method, the VI must be paused.	Yes
482	Debugging:Step Over	Single-steps through a VI to help you debug the VI. To use this method, the VI must be paused.	Yes
483	Debugging:Step Out	Single-steps through a VI to help you debug the VI. To use this method, the VI must be paused.	Yes
484	Debugging:Get Debug Button Display State	Returns TRUE if the button is enabled or FALSE if the button is grayed out. This method also returns the string for the tip strip associated with the button. For example, this method might return Step into For Loop for the Step Into button.	Yes
485	Copy VI Hierarchy With FPGA Side Effects		No
486	VI Hierarchy:Remove Generic From VI Hierarchy		No
488	Save:Prepare For Compile And Save		No
489	Transaction:Get Undo State	Returns whether there is an action to undo and, if so, the text that corresponds to that action.	Yes
490	Transaction:Get Redo State	Returns whether there is an action to redo and, if so, the text that corresponds to that action.	Yes
491	Compile:Compile To DFIR XML (Not Implemented)		Yes
492	Reset Generated Code Profile Results		No
493	Compile:Compile To DFIR CPP		No
494	License:Get License Status		Yes
495	Get Compile Metrics	Returns a string that describes transform metrics from the most recent compile of the VI, if metric recording was enabled.	Yes
496	Set Is Instance No Owner Check		No
49B	Get Library Access Scope	Returns the access scope or inherited access scope of this VI if it is owned by a LabVIEW project library. This method provides the same information as the method Source Scope:Get of the Project Library class without requiring a reference to the owning project library.	No
49C	Library:Has Library?		Yes
49D	Create from Data Type	Creates a control or constant of the data type you specify. LabVIEW always creates a control initially, even if you configure Style to create a constant or indicator. To change the type of the new object, use the Indicator property.	No
49E	Get CallPaths To Other VI		Yes
49F	Check AppBuilderCache		No
4A0	Save:Target Instrument For AppBuilder		No
4A1	Control Value:Set Multiple		Yes
4A2	Populate Asynchronous Call Pool	Ensures that the asynchronous call pool for a VI reference contains at least the number of data spaces specified by the Minimum Size parameter. By default, when you open a reference with the Open VI Reference function, LabVIEW allocates one data space per CPU core on the development computer.	Yes
4A3	VI Icon:Load VI Icon Manually		No
4A4	Export Interface		Yes
4A5	Attempt Setting Disconnect From Callers Needed		No
4A6	GetXMLDataTypes		Yes
4A7	Get Control Index by Name	Gets the index for the control or indicator of the given name. If the control or indicator for which you want to get an index does not have a terminal on the block diagram, this method returns an error.	Yes
4A8	Get VI Bookmarks	Returns the bookmark information for the specified VI reference. You must load the VI into memory in order to read the bookmark information. This method returns an error if the VI is password protected or if the VI does not have a block diagram.	Yes
4A9	Get ObjectRef From BookmarkID	Returns a reference to the object, such as the label, that contains the bookmark.	Yes
4AA	Get AppBuilder Source Checksum		No
4AB	InternalStats		Yes
4AC	Get Missing Dependencies Information		Yes
4AD	Contains LinkRef		No
4AE	Clear TypeCast LinkRefs		No
4AF	Get UDClass LinkRefs		No
4B0	Configure Panel As Top-Level Hidden	Hides the front panel of the VI and optionally hides the VI from the taskbar when the VI runs as a top-level VI by changing the VI properties, such as the front panel transparency, run-time position, and minimization properties. This method is useful when you want to control if and when the front panel opens for top-level VIs. For example, use this method to hide the front panel of startup VIs of stand-alone applications that you build in LabVIEW.	No
4B1	GetAllHierarchyRefers		Yes

Events

Show/Hide VI Events Table

Legend
Basic Development Environment
VI Scripting
Private
Deprecated

VI Events Table

Code	Name	Description	Type
1073741895	DiagNodeSize
1073741847	Key Down	Generated when the user performs keystrokes on the keyboard.	Notify
2147483658	Key Down?	Generated when the user performs keystrokes on the keyboard.	Filter
1073741848	Key Repeat	Generated at regular intervals when the user presses and holds a key anywhere on the front panel.	Notify
2147483659	Key Repeat?	Generated at regular intervals when the user presses and holds a key anywhere on the front panel.	Filter
1073741836	Key Up	Generated when the user releases a key on the keyboard.	Notify
2147483680	VI class/ event
1073741851	Menu Selection (App)	Generated when the user selects an application item from the LabVIEW menu, such as Help»Show Context Help. Use the Menu Selection (User) event to generate an event when the user selects a user-defined menu item.	Notify
2147483654	Menu Selection? (App)	Generated when the user selects an application item from the LabVIEW menu, such as Help»Show Context Help.	Filter
1073741829	Menu Selection (User)	Generated when the user selects a user-defined item from the LabVIEW menu. Use the Menu Selection (App) event to generate an event when the user selects an application menu item.	Notify
1073741839	Mouse Enter	Generated when the cursor enters the bounds of the front panel.	Notify
1073741838	Mouse Leave	Generated when the cursor leaves the bounds of the front panel.	Notify
1073741849	Panel Close	Generated when the user tries to interactively close the front panel of a VI by selecting the Close item in the File menu or by clicking the close glyph on the window border.	Notify
2147483651	Panel Close?	Generated when the user tries to interactively close the front panel on a VI by selecting the Close item in the File menu or by clicking the close glyph on the window border.	Filter
1073741843	Panel Resize	Generated when the user sizes the front panel by clicking and dragging the window frame, minimizes or maximizes the front panel, or restores the front panel to its original size from a maximized or minimized state.	Notify
1073741894	Start Diagram Drag
1073741860	VI Will Be Purged

History

Version	Change(s)
	In LabVIEW 2020 the following changes were made: The Execution:Retain Wire Values property was changed from Private to Basic Development Environment The Execution highlighting? property name was changed to Execution Highlighting? property

See Also

• VI Server Class Hierarchy
• VI Server
• VI Scripting