AddElement()

Syntax

Result = AddElement(List())

Adds a new empty element after the current element or as the first item in the list if there are no elements in it. This new element becomes the current element of the list.

Parameters

List()

The name of your list variable, created with the NewList function. You must include the brackets after the list name.

Return value

Returns non-zero if the new element was created and zero otherwise. The value returned is a pointer to the new element data.

Example

  ; The simplest way to use AddElement
  NewList simple.w()
  AddElement(simple())    ; Creates the first new element in the list
  simple() = 23

  AddElement(simple())    ; Current position is the first element, so we add one to the second position
  simple() = 45


  ; This shows how to use the return-value of AddElement
  NewList advanced.l()
  If AddElement(advanced()) <> 0
    advanced() = 12345
  Else
    MessageRequester("Error!", "Unable to allocate memory for new element", #PB_MessageRequester_OK)
  EndIf


  ; A small structure to demonstrate the use of the pointer to the new element
  Structure Programmer
    Name.s
    Strength.b
  EndStructure

  NewList Programmers.Programmer()  ; The list for storing the elements

  *Element.Programmer = AddElement(Programmers())
  If *Element<>0
    *Element\Name = "Dave"
    *Element\Strength = 3   ; Wow, super-strong geek! ;)
  Else
    MessageRequester("Error!", "Unable to allocate memory for new element", #PB_MessageRequester_OK)
  EndIf

See Also

InsertElement(), DeleteElement(), ClearList()

Supported OS

All