# IBM Visualization Data Explorer Programmer's Reference

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### DXInitGetNextInvalidElementIndex, DXInitGetNextValidElementIndex

Function

Prepares an invalid-component handle for iteration through the invalid or valid elements.

Syntax
`
#include <dx/dx.h>
`

Error DXInitGetNextInvalidElementIndex(InvalidComponentHandle handle)
Error DXInitGetNextValidElementIndex(InvalidComponentHandle handle)

Functional Details

Prepares the invalid-component handle `handle` for iteration through the contents.

Return Value

Returns `OK` or returns `ERROR` and sets an error code.

See Also

`DXCreateInvalidComponentHandle, DXFreeInvalidComponentHandle`

14.3 , "Invalid Data".

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