Chapter 8 Utility Library
© National Instruments Corporation 8-5 LabWindows/CVI Standard Libraries
•Standard Input/Output Window functions control various attributes of the Standard
Input/Output Window.
•Run-Time Error Reporting functions enable and disable the feature which breaks execution
when a LabWindows/CVI library function returns an error code.
•Interrupts functions disable and enable the occurrence of interrupts.
•Physical Memory Access functions read and write data from and to physical memory
addresses. (Supported only under Microsoft Windows).
•Persistent Variable functions store and retrieve an integer value across multiple builds and
executions of a project in the LabWindows/CVI development environment.
•Task Switching functions control whether a user can switch to another task under Microsoft
Windows.
•Launching Executables functions start another executable, check whether it is still running,
and terminate it.
•Miscellaneous functions perform a variety of operations that do not fit into any of the other
function classes.
The online help with each panel contains specific information about operating each function
panel.
Utility Library Function Reference
This section describes the functions in the LabWindows/CVI Utility Library. The
LabWindows/CVI Utility Library functions are arranged alphabetically.

Beep

void Beep (void);
Purpose
Sounds the speaker.
Parameters
None
Return Value
None