DtEditorUndoEdit(library call) DtEditorUndoEdit(library call)
NAME [Toc] [Back]
DtEditorUndoEdit - undo the last edit made to the text in a DtEditor
widget
SYNOPSIS [Toc] [Back]
#include <Dt/Editor.h>
Boolean DtEditorUndoEdit(
Widget widget);
DESCRIPTION [Toc] [Back]
The DtEditorUndoEdit function undoes the last change (deletion or
insertion) made to the text in a DtEditor widget. A change consists
of either a set of consecutive insertions, or a set of consecutive
deletions followed by up to one set of consecutive insertions. An
insertion is consecutive if there have been no intervening deletions,
and it is continuing forward from the same point. A deletion is
consecutive if there have been no intervening insertions, and its
start or end position is coincidental with the last deletion (that is,
the deletion is continuing from the same point, either forward or
backward). Undoing an edit once restores the original text. Undoing
an edit twice restores the last change.
The widget argument specifies the DtEditor widget ID.
For a complete definition of the DtEditor widget and its associated
resources, see DtEditor(3).
RETURN VALUE [Toc] [Back]
Upon successful completion, the DtEditorUndoEdit function returns
True; otherwise, if there is no pending undo it returns False.
SEE ALSO [Toc] [Back]
Dt/Editor.h - DtEditor(5), DtEditor(3).
- 1 - Formatted: January 24, 2005 [ Back ] |
