Generic FunctionPackage: cgToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 8.2
Unrevised from 8.1 to 8.2.
8.1 version

erase-contents-box-x-y

Arguments: stream left top right bottom

Unfills a rectangular area on stream from an upper-left position at (left, top) to a lower-right position a (right, bottom). (Unfills means to fill with the stream's background-color.) stream should be a graphical-stream. The other arguments should be integers. To use a box object rather than individaul coordinates, see erase-contents-box.

The filled area will include the pixels where the x coordinate is equal to left and those where the y coordinate is equal to top, but not the pixels where the x coordinate is equal to right or those where the y coordinate is equal to bottom.


Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.

ToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 8.2
Unrevised from 8.1 to 8.2.
8.1 version