Provided by: libxpa-dev_2.1.18-4_amd64 bug


       XPAXt -  the XPA Interface to Xt (X Windows)


       Describes how XPA access points can be added to X Toolkit (Xt) programs.


       XPA supports Xt programs: you can call XPANew(), XPACmdNew(), or XPAInfoNew() within any C
       routine to add XPA server callbacks to an Xt program.  Since an Xt program has its own
       event loop call (i.e., XtAppMainLoop()), it therefore does not need or want to use the XPA
       even loop.  Thus, in order to add XPA access points to the standard Xt event loop, the
       following routine should be called before entering the loop:

         int XPAXtAddInput(XtAppContext app, XPA xpa)

       The XPAAddAddInput() routine will add XPA access points to the Xt event loop by making
       calls to the standard XtAppAddInput() routine. (If the XtAppContext argument is NULL, then
       the alternate XtAddInput() routine is used instead.)  If the xpa argument is NULL, then
       all active XPA access points are added to the loop.  If xpa is not NULL, then only the
       specified access point is added.  The latter type of call is used to add new access points
       from within a callback, after the program has entered the XtAppMainLoop() even loop.


       See xpa(7) for a list of XPA help pages