A numeric input field can be defined to accept up/down button clicks. Up/down buttons are only displayed if the iEditStyle field of the SFTMASK_CONTROL structure is set to SFTMASK_EDITUPDOWN and if the numeric field uses the ^ subtoken (see Edit Masks).
Numeric fields with a minimum/maximum range require no further programming to allow the up/down buttons to increment/decrement the current value. For other numeric fields (without minimum/maximum range), the NM_SFTMASK_UPDOWNPRESS notification must be handled to increment/decrement the current value under program control. Using the NM_SFTMASK_UPDOWNPRESS notification, an application can implement its own minimum/maximum range and also a delayed or custom increment.
The NM_SFTMASK_UPDOWNHANDLED notification is sent after the control contents have been modified using the up/down button.
Up/down buttons support hot-tracking (see the fHotTrack field).
The up/down buttons can be disabled using the fLockedUpDown field.
See Also Edit Masks | Auto-Advance | SFTMASK_EDIT Constants | Notifications
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