CLEAR TYPEAHEAD

CLEAR TYPEAHEAD

Empty the keyboard buffer

Syntax

      CLEAR TYPEAHEAD

Description

CLEAR TYPEAHEAD is a keyboard command that clears all pending keys from the Clipper keyboard buffer. This is useful in user interface procedures or user-defined functions to guarantee that keys processed from the keyboard buffer are appropriate to the current activity and not pending from a previous activity. User functions called by ACHOICE() and DBEDIT() are especially sensitive to such keys.

Note that both the SET TYPEAHEAD and KEYBOARD commands also clear the keyboard buffer.

Examples

      .  This example empties the keyboard buffer before invoking
      DBEDIT(), guaranteeing that any pending keys will not be executed:
      CLEAR TYPEAHEAD
      DBEDIT()

Seealso

KEYBOARD, SET TYPEAHEAD

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