DioQueryDeviceName

Function

Retrieves the list of available devices.

Format

Ret = DioQueryDeviceName ( Index , DeviceName , Device )

Parameters

Index [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
This parameter should be zero for the first call and then be incremented for subsequent calls.

DeviceName [ VB.NET: String ] [ C, C++: char * ] [ C#: out string ] [ Python: ctypes.c_char_p ]
Returns the device name. (For example: "DIO000")

Device [ VB.NET: String ] [ C, C++: char * ] [ C#: out string ] [ Python: ctypes.c_char_p ]
Returns the board name. (For example: "DIO-0808LY2-USB")

Return Value

Ret [ VB.NET: Integer ] [ C, C++: long ] [ C#: int ] [ Python: ctypes.c_long ]

Definition	Value [Dec]	Description
DIO_ERR_SUCCESS	0	Normal completed.
DIO_ERR_INFO_NOT_FIND_DEVICE	10051	Not find the available device. Please confirm whether the device has been registered in Device Manager.
STATUS_SYS_USB_NOT_FOUND_DEVINFO	20032	Not found device infomation.

The others (See also: Details of Error Code)

Remarks

This function can be used when you create a general-purpose application that you can select a device you want to use.
The Index is set to zero for the first call. And then it should be incremented for subsequent calls until the function returns error.

For C, C++

for (int Index = 0; Ret DIO_ERR_SUCCESS; Index++){
Ret = DioQueryDeviceName ( Index , DeviceName , Device );
}

Please be sure to connect the device before launching your application.
If the device is not connected, the device list may not be retrieved correctly.

Example

Retrieves the information of the device by Index=0.

VB.NET	Dim Ret As Integer Dim DeviceName As String = Space(256) Dim Device As String = Space(256) Ret = DioQueryDeviceName ( 0 , DeviceName , Device )
C, C++	long Ret; char DeviceName[256]; char Device[256]; Ret = DioQueryDeviceName ( 0 , DeviceName , Device );
C#	int Ret; string DeviceName; string Device; Ret = dio.QueryDeviceName ( 0 , out DeviceName , out Device );
Python	Ret = ctypes.c_long() DeviceName = ctypes.create_string_buffer(256) Device = ctypes.create_string_buffer(256) Ret.value = cdio.DioQueryDeviceName ( 0 , DeviceName , Device )