| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: drawable stream
Called whenever a drawable
control needs to be
redrawn, such as when it is uncovered. drawable
is the drawable control itself. stream is the
stream on which to draw.
If the use-bitmap-stream property of the control is true, then stream will be the bitmap-stream of the control; otherwise stream will be the visible window of the control.
If use-bitmap-stream is true, then redisplay-event will be called only when the application explicitly calls update-drawable on the drawable; otherwise whatever is currently drawn on the bitmap-stream is used to refresh the visible window as needed.
The default redisplay-event method essentially just calls the on-redisplay handler of the drawable if it has one. The on-redisplay handler is the more typical place to place custom drawing code.
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.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |