.\"
.\" Copyright (c) Mark J. Kilgard, 1996.
.\"
.\" See the file "man/LICENSE" for information on usage and redistribution
.\"
.TH glutEntryFunc 3 "April 2025" "freeglut" "freeglut"
.SH NAME
glutEntryFunc - sets the mouse enter/leave callback for the current window.
.SH SYNTAX
.nf
.LP
void glutEntryFunc(void (*func)(int state));
.fi
.SH ARGUMENTS
.IP \fIfunc\fP 1i
The new entry callback function.
.SH DESCRIPTION
glutEntryFunc sets the mouse enter/leave callback for the current
window. The state callback parameter is either GLUT_LEFT or
GLUT_ENTERED depending on if the mouse pointer has last left or entered
the window.

Passing NULL to glutEntryFunc disables the generation of the mouse
enter/leave callback.

Some window systems may not generate accurate enter/leave callbacks.
X IMPLEMENTATION NOTES
An X implementation of GLUT should generate accurate enter/leave
callbacks.
.SH SEE ALSO
glutMotionFunc, glutCreateWindow
.SH AUTHOR
Mark J. Kilgard (mjk@nvidia.com)