Calling an idle function in X

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Article #38291

#38291

From: Joshua Rosinger
Date: Thu, 03 Jul 1997 00:00

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Hi everyone,

I am doing a program that invlolves OpenGL, Xlib and a bit of Xt. What I
want to do is to be able to call a function even if there are no X
events for my program, ie to perform some work even if the connection is
idle. This is similar to glutIdleFunc in OpenGL. I need to do it with
Xlib so I can't use XtAppMainLoop.

How do I go about doing it with Xlib? What I do now is:

While(1)
{
   do
    {
         cases of events type ...
    }
    While (XPending(...))
    Call to the function ...
    Here I generate a fake expose event and use XSendEvent to send it to
my program.
}

I guess this solution is not very efficient. How does glut implement it
in general?

Any information will be appreciated.

Thanks in advance,
Shuky

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From: Joshua Rosinger <info@greenrose.com>
Subject: Calling an idle function in X
Date: 1997/07/03
Message-ID: <33BBAE35.1B2B5D48@greenrose.com>
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Organization: GreenRose Corp.
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