Changing an ITime Object

You can add or subtract two times. Four operators are provided: +, +=, -, and -=. The following example shows the use of these operators:

ITime Start(12:00), Duration(2:00),
      Done=Start+Duration;           // Done=14:00
Start=Done-Duration;                 // Start=12:00 still
Start+=Duration;                     // Start=14:00
Start-=Duration;                     // Start=12:00 again