glutGetWindow (3) - Linux Manuals
glutGetWindow: Return the current window identifier, 0 if undefined
Command to display glutGetWindow manual in Linux: $ man 3 glutGetWindow
NAME
glutGetWindow
- Return the current window identifier, 0 if undefined
LIBRARY
OpenGLUT - window
SYNOPSIS
In openglut.h
Ft int
Fn glutGetWindow void
DESCRIPTION
glutGetWindow() returns the
Bf Li
window id
Ef
of the
Bf Li
current window
Ef
. This is useful, e.g., if you have
a generic function that is used with several windows and
it needs to temporarily change to another window.
(There is no window stack for you to use with pushes and
pops. Do not be confused by glutPushWindow() and glutPopWindow();
those pushes and pops are
Bf Em
not
Ef
stack-related!)
One cause for the function to return 0 is if you have
called glutDestroyWindow() on the
Bf Li
current window
Ef
and have
done nothing to set a new window as current.