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C/C++ Source or Header  |  1992-07-08  |  2KB  |  95 lines
  1. /*
  2.  * Copyright 1989, 1992 O'Reilly and Associates, Inc.
  3.  * See ../Copyright for complete rights and liability information.
  4.  */
  5.  
  6.  
  7. /* 
  8.  *  Ex3-8.c - demonstrate passing data to callback function
  9.  */
  10.  
  11. /*
  12.  *  So that we can use fprintf:
  13.  */
  14. #include <stdio.h>
  15.  
  16. /* 
  17.  * Standard Toolkit include files:
  18.  */
  19. #include <X11/Intrinsic.h>
  20. #include <Xm/Xm.h>
  21.  
  22. /*
  23.  * Public include files for widgets used in this file.
  24.  */
  25. #include <Xm/PushB.h>
  26. #include <Xm/RowColumn.h>
  27.  
  28. /*
  29.  * quit button callback function
  30.  */
  31. /*ARGSUSED*/
  32. void Quit(w, client_data, call_data)
  33. Widget w;
  34. XtPointer client_data, call_data;
  35. { 
  36.     exit(0); 
  37. }
  38.  
  39. /*
  40.  * "Press me!" button callback function
  41.  */
  42. /*ARGSUSED*/
  43. void PressMe(w, client_data, call_data)
  44. Widget w;
  45. XtPointer client_data, call_data;
  46. { 
  47.     fprintf(stderr, "%s\n", client_data); 
  48. }
  49.  
  50. main(argc, argv)
  51. int argc;
  52. char **argv;
  53. {
  54.     XtAppContext app_context;
  55.     Widget rowColumn, quit, pressme, topLevel;
  56.  
  57.     /*
  58.      * Register the default language procedure
  59.      */
  60.     XtSetLanguageProc(NULL, (XtLanguageProc)NULL, NULL);
  61.  
  62.     topLevel = XtVaAppInitialize(
  63.             &app_context,       /* Application context */
  64.             "XRowColumn",       /* application class name */
  65.             NULL, 0,            /* command line option list */
  66.             &argc, argv,        /* command line args */
  67.             NULL,               /* for missing app-defaults file */
  68.             NULL);              /* terminate varargs list */
  69.  
  70.     rowColumn = XtVaCreateManagedWidget(
  71.             "rowColumn",            /* widget name */
  72.             xmRowColumnWidgetClass, /* widget class */
  73.             topLevel,               /* parent widget*/
  74.             NULL);                  /* terminate varargs list*/
  75.  
  76.     quit = XtVaCreateManagedWidget(
  77.             "quit",                     /* widget name */
  78.             xmPushButtonWidgetClass,    /* widget class */
  79.             rowColumn,                  /* parent widget*/
  80.             NULL);                      /* terminate varargs list*/
  81.  
  82.     pressme = XtVaCreateManagedWidget(
  83.             "pressme",                  /* widget name   */
  84.             xmPushButtonWidgetClass,    /* widget class */
  85.             rowColumn,                  /* parent widget*/
  86.             NULL);                      /* terminate varargs list*/
  87.  
  88.     XtAddCallback(quit, XmNactivateCallback, Quit, 0);
  89.     XtAddCallback(pressme, XmNactivateCallback, PressMe, "Thanks");
  90.  
  91.     XtRealizeWidget(topLevel);
  92.  
  93.     XtAppMainLoop(app_context);
  94. }
  95.