1XtOpenApplication(3)             XT FUNCTIONS             XtOpenApplication(3)
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NAME

6       XtOpenApplication, XtVaOpenApplication - initialize, open, or close a
7       display
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SYNTAX

10       #include <X11/Intrinsic.h>
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12       Widget XtOpenApplication(XtAppContext *app_context_return, const char
13              *application_class, XrmOptionDescRec *options, Cardinal
14              num_options, int *argc_in_out, char **argv_in_out, String *fall‐
15              back_resources, WidgetClass widget_class, ArgList args, Cardinal
16              num_args);
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18       Widget XtVaOpenApplication(XtAppContext *app_context_return, const char
19              *application_class, XrmOptionDescRec *options, Cardinal
20              num_options, int *argc_in_out, char **argv_in_out, String *fall‐
21              back_resources, WidgetClass widget_class, ...);
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ARGUMENTS

24       app_context_return
25                 Specifies the application context.
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27       application_class
28                 Specifies the class name of this application, which usually
29                 is the generic name for all instances of this application.
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31       options   Specifies how to parse the command line for any application-
32                 specific resources.  The options argument is passed as a
33                 parameter to XrmParseCommand.  For further information, see
34                 Xlib - C Language X Interface.
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36       num_options
37                 Specifies the number of entries in the options list.
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39       argc_in_out
40                 Specifies a pointer to the number of command line parameters.
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42       argv_in_out
43                 Specifies the command line parameters.
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45       fallback_resources
46                 Specifies resource values to be used if the application class
47                 resource file cannot be opened or read, or NULL.
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49       widget_class
50                 Specifies the widget class of the shell to be created.
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52       args      Specifies the argument list to override any other resource
53                 specification for the created shell widget.
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55       num_args  Specifies the number of entries in the argument list.
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57       ...       Specifies the variable argument list to override any other
58                 resource specification for the created shell widget.
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DESCRIPTION

61       The XtOpenApplication function calls XtToolkitInitialize followed by
62       XtCreateApplicationContext, then calls XtOpenDisplay with dis‐
63       play_string NULL and application_name NULL, and finally calls XtAppCre‐
64       ateShell with application_name NULL, the specified widget_class, and
65       the specified args and num_args and returns the created shell.  The
66       modified argc and argv returned by XtDisplayInitialize are returned in
67       argc_in_out and argv_in_out. If app_context_return is not NULL, the
68       created application context is also returned.  If the display specified
69       by the command line cannot be opened, an error message is issued and
70       XtOpenApplication terminates the application.  If fallback_resources is
71       non-NULL, XtAppSetFallbackResources is called with the value prior to
72       calling XtOpenDisplay.
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74       XtAppInitialize and XtVaAppInitialize have been superceded by XtOpen‐
75       Application and XtVaOpenApplication respectively.
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SEE ALSO

78       XtAppInitialize(3), XtVaAppInitialize(3)
79       X Toolkit Intrinsics - C Language Interface
80       Xlib - C Language X Interface
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84X Version 11                      libXt 1.2.0             XtOpenApplication(3)
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