XtDisplayInitialiX
ze(
V3
eX
rs
t)
ion 11 (1 SeptembeX
rt1
D9
i8
s8
p)
layInitialize(3Xt)



  NAME
       XtDisplayInitialize, XtOpenDisplay, XtDatabase,
       XtCloseDisplay - initialize, open, or close a display

  SYNTAX
       void XtToolkitInitialize()

       void XtDisplayInitialize(app_context, display,
       application_name, application_class,
                              options, num_options, argc, argv)
             XtAppContext app_context;
             Display *display;
             String application_name;
             String application_class;
             XrmOptionDescRec *options;
             Cardinal num_options;
             Cardinal *argc;
             String *argv;

       Display *XtOpenDisplay(app_context, display_string,
       application_name, application_class,
                              options, num_options, argc, argv)
              XtAppContext app_context;
              String display_string;
              String application_name;
              String application_class;
              XrmOptionDescRec *options;
              Cardinal num_options;
              Cardinal *argc;
              String *argv;

       void XtCloseDisplay(display)
             Display *display;

       XrmDatabase XtDatabase(display)
             Display *display;

  ARGUMENTS
       argc      Specifies a pointer to the number of command line
                 parameters.


  Page 1                                          (printed 8/30/91)

  XtDisplayInitialiX
ze(
V3
eX
rs
t)
ion 11 (1 SeptembeX
rt1
D9
i8
s8
p)
layInitialize(3Xt)



       argv      Specifies the command line parameters.

       app_context
                 Specifies the application context.

       application_class
                 Specifies the class name of this application,
                 which usually is the generic name for all
                 instances of this application.

       application_name
                 Specifies the name of the application instance.

       display   Specifies the display.  Note that a display can be
                 in at most one application context.

       num_options
                 Specifies the number of entries in the options
                 list.

       options   Specifies how to parse the command line for any
                 application-specific resources.  The options
                 argument is passed as a parameter to
                 XrmParseCommand.  For further information, see
                 Xlib - C Language X Interface.

  DESCRIPTION
       The XtDisplayInitialize function builds the resource
       database, calls the Xlib XrmParseCommand function to parse
       the command line, and performs other per display
       initialization.  After XrmParseCommand has been called, argc
       and argv contain only those parameters that were not in the
       standard option table or in the table specified by the
       options argument.  If the modified argc is not zero, most
       applications simply print out the modified argv along with a
       message listing the allowable options.  On UNIX-based
       systems, the application name is usually the final component
       of argv[0].  If the synchronize resource is True for the
       specified application, XtDisplayInitialize calls the Xlib
       XSynchronize function to put Xlib into synchronous mode for


  Page 2                                          (printed 8/30/91)

  XtDisplayInitialiX
ze(
V3
eX
rs
t)
ion 11 (1 SeptembeX
rt1
D9
i8
s8
p)
layInitialize(3Xt)



       this display connection.  If the reverseVideo resource is
       True, the Intrinsics exchange XtDefaultForeground and
       XtDefaultBackground for widgets created on this display.
       (See Section 9.6.1).

       The XtOpenDisplay function calls XOpenDisplay the specified
       display name.  If display_string is NULL, XtOpenDisplay uses
       the current value of the -display option specified in argv
       and if no display is specified in argv, uses the user's
       default display (on UNIX-based systems, this is the value of
       the DISPLAY environment variable).

       If this succeeds, it then calls XtDisplayInitialize and pass
       it the opened display and the value of the -name option
       specified in argv as the application name.  If no name
       option is specified, it uses the application name passed to
       XtOpenDisplay.  If the application name is NULL, it uses the
       last component of argv[0].  XtOpenDisplay returns the newly
       opened display or NULL if it failed.

       XtOpenDisplay is provided as a convenience to the
       application programmer.

       The XtCloseDisplay function closes the specified display as
       soon as it is safe to do so.  If called from within an event
       dispatch (for example, a callback procedure), XtCloseDisplay
       does not close the display until the dispatch is complete.
       Note that applications need only call XtCloseDisplay if they
       are to continue executing after closing the display;
       otherwise, they should call XtDestroyApplicationContext or
       just exit.

       The XtDatabase function returns the fully merged resource
       database that was built by XtDisplayInitialize associated
       with the display that was passed in.  If this display has
       not been initialized by XtDisplayInitialize, the results are
       not defined.

  SEE ALSO
       XtAppCreateShell(3Xt), XtCreateApplicationContext(3Xt)


  Page 3                                          (printed 8/30/91)

  XtDisplayInitialiX
ze(
V3
eX
rs
t)
ion 11 (1 SeptembeX
rt1
D9
i8
s8
p)
layInitialize(3Xt)



       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface








































  Page 4                                          (printed 8/30/91)