Path: utzoo!utgpu!watmath!att!tut.cis.ohio-state.edu!bloom-beacon!athena.mit.edu!jstravis
From: jstravis@athena.mit.edu (John S. Travis)
Newsgroups: comp.windows.x
Subject: Linking Libraries/Undefined variables
Summary: HELP!!!
Message-ID: <13489@bloom-beacon.MIT.EDU>
Date: 14 Aug 89 22:58:42 GMT
References: <12086@orstcs.CS.ORST.EDU>
Sender: daemon@bloom-beacon.MIT.EDU
Reply-To: jstravis@athena.mit.edu (John S. Travis)
Organization: Massachusetts Institute of Technology
Lines: 122

Once again I cry for help:
1)why does the order of linking libraries affect stuff? I changed the places
of Xw and Xt on young's oneline textwidget and got this. (compile calls
the gnu cc).

w20-575-59% compile oneline.c -lXt -lXw -lX11 -g
Undefined:
_XtDestroyGC
_XtGetGC
_tempnam
w20-575-59% compile oneline.c -lXw -lXt -lX11 -g
Undefined:
_tempnam

	 And why on this short program do I have trouble, whereas
when i compile the larger draw(modified) program of his I can -lXt -lXw -X11
and not have XtGetGC & XtDestroyGC undefined??(I actually use them in
the draw program, but not in oneline.c)
---------------------------------------------

2)What the heck is tempnam????!!! I have fgrep almost every file I can
think of for it and it is NOWHERE! I'll include the code below. But,
I'm going crazy trying to eliminate this error. (Probably a real stupid
mistake...but TELL me I can take it.Thanks)

john travis
jstravis@athena.mit.edu

---------------------------code cut here---------------------------
/*************************************************
* oneline.c : Create a single line editable field
*************************************************/
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <Xw/Xw.h>
#include <Xw/TextEdit.h>

#define FONTHEIGHT(f)  ((f)->max_bounds.ascent + \
                        (f)->max_bounds.descent)

Widget create_one_line_text_widget();


main(argc,argv)
     int argc;
     char *argv[];
{
  Widget toplevel;
  Arg  wargs[1];

  toplevel = XtInitialize(argv[0],"Edit",NULL,0,&argc,argv);

  XtSetArg(wargs[0],XtNeditType,XwtextEdit);
  create_one_line_text_widget("edit",toplevel,wargs,1);

  XtRealizeWidget(toplevel);
  XtMainLoop();
}

/*
* just ring the terminal bell
*/
static void beep(w,event,params, num_params)
     Widget w;
     XEvent *event;
     String *params;
     int num_params;
{
  XBell(XtDisplay(w),100);
}
/*
* associate the action beep with the function
*/
static XtActionsRec actionsTable [] ={
  {"beep",beep},
};
/*
*override all translations that enter a newline.
*/
static char defaultTranslations[] =
  "Ctrl<Key<J:     beep() \n\
   Ctrl<Key>O:     beep() \n\
   Ctrl<Key>M:     beep() \n\
   <Key> Return:   beep()";

Widget create_one_line_text_widget(name,parent,args, nargs)
     char   *name;
     Widget parent;
     Arg args[];
     int nargs;
{
  XFontStruct *font;
  Widget  w;
  Arg wargs[1];
  XtTranslations  trans_table;
  /*
   * Add the actions and compile the translations
   */
  XtAddActions(actionsTable,XtNumber(actionsTable));
  trans_table = XtParseTranslationTable(defaultTranslations);
  /*
   * Create a textEdit widget
   */
  w = XtCreateManagedWidget(name, XwtexteditWidgetClass,parent,args,nargs);
  /*
   * install our tranlstions
   */
  XtOverrideTranslations(w,trans_table);
  /*
   *get the font used by the widget
   */
  XtSetArg(wargs[0],XtNfont,&font);
  XtGetValues(w,wargs,1);
  /*
   * set the widget height according to the font height
   */
  XtSetArg(wargs[0],XtNheight,FONTHEIGHT(font) + 6);
  XtSetValues(w,wargs,1);

return(w);

}