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

## mouse-wheel-present

Arguments:

On Windows, this function returns true if and only if a mouse that has a wheel is installed. This function may be useful for an application that adds mouse-wheel methods to implement custom mouse-wheel behavior.

On GTK, `nil` is always returned because we have not found a way to determine whether there is a mouse wheel.

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