CNVGetDataType
int CNVGetDataType (CNVData data, CNVDataType *type, unsigned long *numberOfDimensions);
Purpose
Gets the type and number of dimensions of the data.
Parameters
| Input | ||
| Name | Type | Description |
| data | CNVData | The handle that identifies the network variable data. |
| Output | ||
| Name | Type | Description |
| type | CNVDataType | The type of the network variable data. CNVEmpty indicates that the data handle does not contain any value but may contain timestamp or quality information. |
| numberOfDimensions | unsigned long | The number of dimensions of the network variable data. If the data is a scalar, CNVGetDataType returns zero as the number of dimensions. |
Return Value
| Name | Type | Description |
| status | int | Return value indicating whether the function was successful. One indicates that a next item was found, zero indicates that a next item was not found, and a negative number indicates that an error occurred. You can call CNVGetErrorDescription to obtain a string that describes the error. |
Additional Information
Library: Network Variable Library
Include file: cvinetv.h
LabWindows/CVI compatibility: LabWindows/CVI 8.1 and later
Examples
Refer to the following examples that use the CNVGetDataType function:
- apps\chess\chess.cws
Open example - networkvariable\3DSim\NV3DSim.cws
Open example - networkvariable\Quality\NVQuality.cws
Open example