Indicates if a string value contains only whitespace characters.

function IsWhiteString(const AStr: String): Boolean;

Values to be examined for whitespace characters.

Boolean - True when AStr contains only whitespace character.

IsWhiteString is a Boolean function that indicates if the value in AStr contains only whitespace characters. Whitespace characters include the values TAB and CHAR32. IsWhiteString returns False when AStr contains any character not considered a whitespace character.

When AStr is an empty string, the return value for IsWhiteString is True.