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doc/gl-docs/GL/glx/xqueryextension.3gl

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+'\"! eqn | mmdoc
+'\"macro stdmacro
+.ds Vn Version 1.2
+.ds Dt 6 March 1997
+.ds Re Release 1.2.0
+.ds Dp Feb 16 02:56
+.ds Dm  Feb 10 17:2
+.ds Xs 25267 2 xqueryextension.gl
+.TH GLXQUERYEXTENSION 3
+.SH NAME
+glXQueryExtension
+\- indicate whether the GLX extension is supported
+
+.SH C SPECIFICATION
+Bool \f3glXQueryExtension\fP(
+Display \fI*dpy\fP,
+.nf
+.ta \w'\f3Bool \fPglXQueryExtension( 'u
+	int \fI*errorBase\fP,
+	int \fI*eventBase\fP )
+.fi
+
+.EQ
+delim $$
+.EN
+.SH PARAMETERS
+.TP \w'\fIerrorBase\fP\ \ 'u 
+\f2dpy\fP
+Specifies the connection to the X server.
+.TP
+\f2errorBase\fP
+Returns the base error code of the GLX server extension.
+.TP
+\f2eventBase\fP
+Returns the base event code of the GLX server extension.
+.SH DESCRIPTION
+\f3glXQueryExtension\fP returns \f3True\fP if the X server of
+connection \f2dpy\fP supports the GLX extension,
+\f3False\fP otherwise.
+If \f3True\fP is returned,
+then \f2errorBase\fP and \f2eventBase\fP return the error base and event base of
+the GLX extension.
+Otherwise, \f2errorBase\fP and \f2eventBase\fP are unchanged.
+.P
+\f2errorBase\fP and \f2eventBase\fP do not return values if they are specified
+as \f3NULL\fP.
+.SH NOTES
+\f2eventBase\fP is included for future extensions.
+GLX does not currently define any events.
+.SH SEE ALSO
+\f3glXQueryVersion\fP
+