private void DisableNumerics()
{
TrimEndNumericHours.Enabled = false;
TrimEndNumericMinutes.Enabled = false;
TrimEndNumericSeconds.Enabled = false;
TrimStartNumericHours.Enabled = false;
TrimStartNumericMinutes.Enabled = false;
TrimStartNumericSeconds.Enabled = false;
ChapterLengthUpDown.Enabled = false;
DisableSup();
// hobBIT
TrimStartSet.Enabled = false;
TrimEndSet.Enabled = false;
}