VI Properties
You can set these properties for a VI in edit mode by selecting File»VI Properties and other menu items. If you do not wire a refnum to the reference input of the Property Node, LabVIEW gets or sets the property for the current VI.
| Property | Description |
|---|---|
| Auto Logging:Log at Finish | Indicates whether to write front panel values to a datalog file after the VI runs. Details |
| Auto Logging:Log File Path | Path of the datalog file in which front panel data and a time stamp are written. Details |
| Auto Logging:Print at Finish | Indicates whether to print the front panel after the VI runs. Details |
| Automatic Error Handling | If TRUE, enables automatic error handling for a VI. Details |
| Callees' Names | Returns a list of all the subVIs or callees in a VI. Details |
| Callers' Names | Returns a list of all the loaded VIs that call the referenced VI. Details |
| 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. Details |
| Execution:Allow Debugging | If TRUE, you can use debugging tools on the VI. Set this property to FALSE to reduce memory requirements and to improve performance slightly for the VI. Details |
| Execution:Close After Call | Indicates whether to close the front panel after the VI runs. Details |
| Execution:Is Reentrant | Indicates whether a VI can be reentrant. Details |
| Execution:Preferred Exec System | Indicates the execution system in which the VI runs. Details |
| Execution:Priority | Indicates the priority of the VI when it runs in parallel with other tasks. Details |
| Execution:Run When Opened | Indicates whether to run the VI when it opens. Details |
| Execution:Show Front Panel On Call | Indicates whether to show the front panel when the VI is called. Details |
| Execution:Show Front Panel On Load | Indicates whether to show the front panel when the VI is loaded. Details |
| Execution:State | Indicates the execution state of the VI. Details |
| Execution:Suspend On Call | Indicates whether the VI should be suspended when it is called as a subVI. Use this property carefully with reentrant VIs. Details |
| Expand When Dropped As SubVI | Expands to show terminals when dropped as a subVI. Details |
| Front Panel Window:Allow Runtime PopUp | Indicates whether to display shortcut menus for front panel objects while the VI runs. Details |
| 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). Details |
| 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. Details |
| Front Panel Window:Custom Title | Indicates whether the VI has a custom title string. Write FALSE to remove the custom title string. Details |
| Front Panel Window:Highlight Return Button | Indicates whether to highlight Boolean controls that have a shortcut key of <Enter>. Details |
| Front Panel Window:Is Frontmost | Indicates whether to bring the front panel to the front. This property applies only in the application instance of the calling VI. Details |
| 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. Details |
| Front Panel Window:Minimizeable | Indicates whether the user can minimize the front panel window while the VI runs. Details |
| Front Panel Window:Minimum Size | Minimum size of the front panel window in pixels. If Front Panel Window:Resizeable is TRUE, the user cannot resize the front panel smaller than the width and height you wire to this property. Details |
| Front Panel Window:Monitor | The monitor on which the front panel window appears, if you have multiple monitors. The value 0 is the primary monitor. Details |
| Front Panel Window:Open | National Instruments recommends you use the Front Panel:Open method instead of this property. Details |
| 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 refer to coordinates within a computer monitor's screen (rather than an open window).
You can set this property only for VIs with open front panels. If you do not want the VI for which you want to set this property to appear to users, use the Hidden state of the Front Panel Window:State property to hide the front panel of the VI. Details |
| Front Panel Window:Resizeable | Indicates whether the user can resize the front panel window while the VI runs. Details |
| 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. This property is similar to the Window Runs Transparent option in the Customize Window Appearance dialog box. Details |
| Front Panel Window:Show Menu Bar | Indicates whether to display the menu bar on the front panel while the VI runs. Details |
| Front Panel Window:State | Current state of the front panel window. Valid values include 0 (Invalid), 1 (Standard), 2 (Closed), 3 (Hidden), 4 (Minimized), and 5 (Maximized). Details |
| Front Panel Window:Title Bar Visible | Indicates whether to display a title bar on the front panel while the VI runs. Details |
| Front Panel Window:Title | String that appears in the title bar. This string does not have to match the VI filename. Details |
| 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. If you set the Front Panel Window:Run VI Transparently property to FALSE, changing this property has no immediate effect. This property is similar to the Window Runs Transparent option in the Customize Window Appearance dialog box. Details |
| 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).
You can set this property only for VIs with open front panels. If you do not want the VI for which you want to set this property to appear to users, use the Hidden state of the Front Panel Window:State Property to hide the front panel of the VI. Details |
| Front Panel | Reference to the front panel of a VI. Details |
| 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. Details |
| Help:Document Tag | Index keyword or HTML filename for a topic in the compiled help file to which the VI is linked. Details |
| History:Always Add Comments At Save | Indicates whether to add a comment to the VI revision history every time the VI is saved. Details |
| History:Entire Text | Returns all the text that was added to the VI revision history. Details |
| History:Prompt for Comments At Close | Indicates whether to prompt for a VI revision history comment when the VI closes. Details |
| History:Prompt for Comments At Save | Indicates whether to prompt for a VI revision history comment when the VI is saved. Details |
| 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. Details |
| History:Revision Number | Current revision number of the VI. Details |
| History:Use Defaults | Indicates whether to use the global default history or to use the values entered in other history properties. Details |
| Is Clone VI | Returns TRUE if the VI is a cloned VI. Details |
| Is Instance | Returns whether or not the VI is an Express VI instance. Details |
| Is Probe | Returns TRUE if the VI is running as a probe and the probe VI is open. Details |
| 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. Details |
| Metrics:Code Size | Amount of memory used for VI code in bytes. Details |
| Metrics:Size of Block Diagram | Size of the block diagram in bytes. Details |
| Metrics:Size of Front Panel | Size of the front panel in bytes. Details |
| Metrics:Total Data Size | Amount of memory allocated for data in bytes. Details |
| 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. Details |
| 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. Details |
| 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. Details |
| Owning Application | Returns a reference to the application that owns the VI. Be sure and close this reference afterward. Details |
| Printing:Block Diagram Scaling? | If TRUE, LabVIEW scales the block diagram to fit on the printed page. Details |
| Printing:Front Panel Scaling? | If TRUE, LabVIEW scales the front panel to fit on the printed page. Details |
| 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. Details |
| 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. Details |
| 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. Details |
| 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. Details |
| 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. Details |
| 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. Details |
| Printing:Margins | Gets or sets the page margins to use when printing the VI in inches or centimeters. Details |
| 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. Details |
| Printing:Page Orientation | Gets or sets the page orientation to use when printing the VI. Valid values include 0 (Portrait), 1 (Landscape), 2 (Rotated Portrait), and 3 (Rotated Landscape). Details |
| 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. Details |
| Tool Bar:Show Abort Button | Indicates whether to display the Abort Execution button on the toolbar while the VI runs. Details |
| Tool Bar:Show Free Run Button | Indicates whether to display the Run Continuously button on the toolbar while the VI runs. Details |
| Tool Bar:Show Run Button | Indicates whether to display the Run button on the toolbar while the VI runs. Details |
| Tool Bar:Visible | Indicates whether to display the toolbar while the VI runs. Details |
| VI Clone Name | Name of the cloned VI. Returns an error if the VI is not a clone. Details |
| 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. Details |
| VI Name | Name of the VI file. You can write this property only if the VI has not been saved to disk. Details |
| VI Path | Path to the VI file. Details |
| VI Type | Indicates the type of VI. Invalid VI type, Standard VI, Control VI, Global VI, Polymorphic VI, Configuration VI, SubSystem, Facade VI, Method VI.
LabVIEW returns the invalid VI type value for invalid VI references. LabVIEW returns the SubSystem value for subVIs for the LabVIEW Simulation Module that you can place only on a simulation diagram. The Configuration VI type is not supported. Details |
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