# CVILowLevelSupportDriverLoaded

CVILowLevelSupportDriverLoaded (void);

## Purpose

Indicates whether the LabWindows/CVI low-level support driver was loaded at startup. The following Utility Library functions require the LabWindows/CVI low-level driver:

- inp
- inpw
- outp
- outpw
- ReadFromPhysicalMemory
- ReadFromPhysicalMemoryEx
- WriteToPhysicalMemory
- WriteToPhysicalMemoryEx
- MapPhysicalMemory
- UnMapPhysicalMemory

Linux This function is not supported.

| Note Most of these functions do not return an error if the low-level support driver is not loaded. To make sure your calls to these functions can execute correctly, call CVILowLevelSupportDriverLoaded at the beginning of your program.

The LabWindows/CVI libraries automatically load the low-level support driver at startup if it is on disk. The low-level support driver ships with LabWindows/CVI. Enable the Low-Level Support Driver option on the Edit Installer dialog box Drivers & Components Drivers & Components tab to include the driver with your stand-alone executables or DLLs.

## Parameters

None.

## Return Value

Name | Type | Description
loaded | integer | Indicates whether the LabWindows/CVI low-level support driver was loaded at startup.
Code | Description
1 | Low-level support driver was loaded at startup.
0 | Low-level support driver was not loaded at startup.