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Obtains information about the devices connected to the computer.

The operating system recognizes more than one mouse or keyboard but interprets them to be one virtual mouse/keyboard. LabVIEW cannot return the output for each device separately but returns only the sum of both outputs.

(Windows) You must have DirectX 8.0 or later to use this VI.

Example

	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 occurred 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. 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. code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code. source specifies 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.
	joystick info contains information about the joysticks connected to the computer. axes total (Windows) is the total number of axes for each joystick connected to the computer. buttons total (Windows) is the total number of buttons for each joystick connected to the computer. pov total (Windows) is the total number of points of view for each joystick connected to the computer. device name is the device name of each joystick connected to the computer.
	key info contains information about the keyboard connected to the computer. buttons total (Windows) is the number of keys on the keyboard connected to the computer. device name is the device name of the keyboard connected to the computer.
	mouse info contains information about the mouse connected to the computer. axes total (Windows) is the total number of axes for the mouse connected to the computer. buttons total (Windows) is the total number of buttons for the mouse connected to the computer. device name is the device name of the mouse connected to the computer.
	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 front panel indicator and select Explain Error from the shortcut menu for more information about the error. status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code. 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.

Example

Refer to the Basic Input Demo VI in the labview\examples\input\InputDemo.llb for an example of using the Query Input Devices VI.