INPUT / OUTPUT / LANGUAGE

Computing with ioLProgrammer's GuideLanguage Reference

＃ operator ? operator @ operator abs tag add tag align field and tag array tag audio tag backgroundColor field bold field border field borderBottom field borderColor field borderLeft field borderRight field borderStyle field borderTop field bottom field box tag button tag carat field checkBox tag choiceBox tag class tag clear tag clientFrame tag color field console tag dialog tag div tag do field editable field ellipse tag else field eq tag false tag focus field focusOrder field font field for tag ge tag gt tag height field hotKey field if tag img tag inf tag inline field input tag invalid tag int tag italic field join tag layer field le tag left field limit field line tag lt tag margin field marginBottom field marginLeft field marginRight field marginTop field mod tag mul tag ne tag neg tag not tag null tag num tag onClear field onClick field onCommit field onContextClick field onExit field onFocus field onGet field onInput field onKeyDown field onKeyPress field onKeyUp field onMouseDown field onMouseIn field onMouseMove field onMouseOut field onMouseUp field onPull field onPush field onResize field onTimer field openLink tag or tag pivot field playing field put tag putError tag putLn tag requestTransfer tag right field rotate field scalar tag scroll field scrollPos field selectable field spacing field spacingBottom field spacingLeft field spacingRight field spacingTop field span tag split tag sub tag table tag tabRow tag then field timer tag top field transfer tag transferAbility tag transition field true tag underline field vector tag video tag visible field void tag width field with field wrap field xor tag

carat field

Generates the current position of the carat (text cursor) within an editable tag, or moves the carat to a new position.
Selects a region of text, or generates the start and end position of the current text selection.

Sample usage

Applies to

Behaviour

When one value is provided, positions the cursor before that character. The first character has position 1. When two values i,j are provided, creates a text selection spanning from character i to character j inclusive. The position i must precede position j in the text otherwise the selection is not valid. The value 0 represents the position after the last character in the text. Negative values indicate characters counted from the end instead of from the start, so carat=-1 positions the carat in front of the last character in the text.

As with most fields in ioL, the carat field must be assigned with an initial value when the tag is created if you wish to reference it later. It is sufficient to set carat=null when you create the tag.