Indicates the relationship between the time portions of two TDateTime values.
function CompareTime(const A: TDateTime; const B: TDateTime): TValueRelationship;
TValueRelationship CompareTime(const TDateTime A, const TDateTime B);
DateUtils
Call CompareTime to compare the two TDateTime values specified by A and B. CompareTime returns
LessThanValue if A occurs earlier in the day than B (even if A occurs on a later day than B).
EqualsValue if A occurs at the same time of day as B, ignoring of the date portion of the two values.
GreaterThanValue if A occurs later in the day than B (even if A occurs on an earlier day than B).
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