Online Development Notebook > Index > Programming Overview > DLL Commands > CloseDevice

CloseDevice - Close the open device

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Description:

This is a USBm.dll function that closes access to a USB device.

Command Syntax:

true⁄false USBm_CloseDevice( device )

The USBm_CloseDevice function syntax has these parts:

Remarks:

Note: USBm_CloseDevice returns TRUE if the device successfully closes.

VB Declaration (USBmAPI.bas)

Public Declare Function USBm_CloseDevice _     Lib "USBm.dll" _         (ByVal device As Byte) _     As Integer

VB Example

Dim result As Integer

result = USBm_CloseDevice 3

This code fragment closes device number three. "Result" will contain TRUE or FALSE.

C Prototype

int USBm_CloseDevice( unsigned char device );

C Example

RobotBASIC

usbm_CloseDevice(ne_DeviceNumber)

Returns true if the device was successfully closed. False otherwise.

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Hardware:  U401 USB Interface    U421 USB Interface   U451 USB Interface

Programming:  USBm DLL Programming    Download Files

Application Notes:  U4x1 Application Notes    Misc Applications and Information    FAQ

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