lcDrwUndoRecord

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Saves operations in Undo buffer.

BOOL lcDrwUndoRecord (
HANDLE hDrw,
int Mode
);

Parameters

hDrw

Handle to a drawing object.

Mode

Can be one of the following values:

Mode	Meaning
LC_UNDO_BEGIN	Start to write operations into Undo buffer
LC_UNDO_END	Stop to write operations into Undo buffer
LC_UNDO_CLEAR	Clears Undo buffer. This command works only outside of LC_UNDO_BEGIN - LC_UNDO_END block

Return Value

If the function succeeds, the return value is nonzero (TRUE).

See Also

lcDrwUndo

Code sample:

  lcDrwUndoRecord( hLcDrw, LC_UNDO_BEGIN );
  lcPropPutFloat( hLine, LC_PROP_LINE_X0, X0 );
  lcPropPutFloat( hLine, LC_PROP_LINE_Y0, Y0 );
  lcPropPutFloat( hLine, LC_PROP_LINE_X1, X1 );
  lcPropPutFloat( hLine, LC_PROP_LINE_Y1, Y1 );
  lcDrwUndoRecord( hLcDrw, LC_UNDO_END );