F_VN_CreateContainerFromArray
Creates a container with type GUID nTypeGuid, initialize it with provided data and return its container interface. Only supported for basic container types, i.e. not for containers of containers.
Syntax
Definition:
FUNCTION F_VN_CreateContainerFromArray : HRESULT
VAR_INPUT
pData : PVOID;
ipContainer : Reference To ITcVnContainer;
nTypeGuid : GUID;
nElementNum : ULINT;
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
pData |
PVOID |
Pointer to the data array. Make sure that the array contains at least nElementNum elements and that the array element type matches the container element type. |
|
ipContainer |
Reference To ITcVnContainer |
Returns the created container |
|
nTypeGuid |
GUID |
Type GUID of the container to be created |
|
nElementNum |
ULINT |
Number of elements to copy from pData |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
Return valueFurther information
The global ContainerType constants can be used to determine the container type via the parameter nTypeGuid.
Since the array data is only specified via a pointer, a type check within the function is not possible. Therefore, please note the following warning:
| |
Memory access It must be ensured that the type and length of the container correspond to the size of the memory area at the pointer. Otherwise, this can lead to a system crash or invalid data. |
Required License
TC3 Vision Base
System Requirements
Development environment | Target platform | PLC libraries to include |
|---|---|---|
TwinCAT V3.1.4024.54 or later | PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU | Tc3_Vision |