<HTML><HEAD><TITLE>Manpage of glutDialsFunc</TITLE> </HEAD><BODY> <H1>glutDialsFunc</H1> Section: GLUT (3GLUT)<BR>Updated: 3.7<BR><A HREF="#index">Index</A> <A HREF="">Return to Main Contents</A><HR> <A NAME="lbAB"> </A> <H2>NAME</H2> glutDialsFunc - sets the dial & button box dials callback for the current window. <A NAME="lbAC"> </A> <H2>SYNTAX</H2> <PRE> void glutDialsFunc(void (*func)(int dial, int value)); </PRE> <A NAME="lbAD"> </A> <H2>ARGUMENTS</H2> <DL COMPACT> <DT><I>func</I><DD> The new dials callback function. </DL> <A NAME="lbAE"> </A> <H2>DESCRIPTION</H2> glutDialsFunc sets the dial & button box dials callback for the current window. The dial & button box dials callback for a window is called when the window has dial & button box input focus (normally, when the mouse is in the window) and the user generates dial & button box dial changes. The dial parameter will be the dial number (starting at one). The number of available dial & button box dials can be determined with glutDeviceGet(GLUT_NUM_DIALS). The value measures the absolute rotation in degrees. Dial values do not ``roll over'' with each complete rotation but continue to accumulate degrees (until the int dial value overflows). Registering a dial & button box dials callback when a dial & button box device is not available is ineffectual and not an error. In this case, no dial & button box dials callbacks will be generated. Passing NULL to glutDialsFunc disables the generation of dial & button box dials callbacks. When a new window is created, no dial & button box dials callback is initially registered. <A NAME="lbAF"> </A> <H2>SEE ALSO</H2> glutButtonBoxFunc, glutDeviceGet <A NAME="lbAG"> </A> <H2>AUTHOR</H2> Mark J. Kilgard (<A HREF="mailto:mjk@nvidia.com">mjk@nvidia.com</A>) <P> <HR> <A NAME="index"> </A><H2>Index</H2> <DL> <DT><A HREF="#lbAB">NAME</A><DD> <DT><A HREF="#lbAC">SYNTAX</A><DD> <DT><A HREF="#lbAD">ARGUMENTS</A><DD> <DT><A HREF="#lbAE">DESCRIPTION</A><DD> <DT><A HREF="#lbAF">SEE ALSO</A><DD> <DT><A HREF="#lbAG">AUTHOR</A><DD> </DL> <HR> This document was created by <A HREF="">man2html</A>, using the manual pages.<BR> Time: 19:05:09 GMT, September 15, 2003 </BODY> </HTML>