ListBoxAppend

Help Contents GUI programming ListBoxes ListBoxAppend
ListBoxSetChoices ListBoxSetItem

ListBoxAppend alistbox choice

Command to append the text of the thing choice to the choices of ListBox alistbox.

Examples: 

lb=ListBox [][LB] [][][]
ListBoxAppend lb [First string]
ListBoxAppend lb [and a second string]
ListBoxAppend lb [and the last string]

Reference:

ListBoxSetChoices ListBoxSetItem