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menubar is the reference to a menubar in a VI.
You can obtain this refnum with the Current VI's Menubar function.
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ms timeout is the maximum amount of time this function checks for a menu selection.
The default is 200 ms. 1 indicates never to time out.
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If block menu is TRUE, LabVIEW disables menu tracking after reading an item tag.
After you process the menu selection, you must use the Enable Menu Tracking function to enable menu tracking. The default is FALSE.
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error in describes error conditions that occur before this VI or function runs.
The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurs before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
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status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
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code is the error or warning code. The default is 0.
If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
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If timed out is TRUE, a user selection was not made within the time specified by ms timeout.
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menubar out is a duplicate of menubar used to pass the refnum to other Menu functions.
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item tag is the menu item that was selected.
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item path describes the position of the item in the menu hierarchy, which is in the format of a list of menu tags separated by a colon (:).
For example, if you choose the Open menu item from the File menu, the item path is File:Open.
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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.
Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
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code is the error or warning code.
If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.
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