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| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version

## usable-top

Arguments: window-or-screen

Returns the topmost coordinate inside a window or the screen that is available for application use.

window-or-screen should be either a window or the screen.

When the screen, the returned value will be the value returned by virtual-screen-top when there are multiple monitors, and otherwise it will be the top of the interior of the screen (which is zero unless the system taskbar takes up space at the top of the screen).

When a window, the returned value is zero.

Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version