1XtAppInitialize(3) XT FUNCTIONS XtAppInitialize(3)
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6 XtAppInitialize, XtVaAppInitialize - initialize, open, or close a dis‐
7 play
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10 Widget XtAppInitialize(XtAppContext* app_context_return, String appli‐
11 cation_class, XrmOptionDescRec* options, Cardinal num_options,
12 int* argc_in_out, String* argv_in_out, String* fall‐
13 back_resources, ArgList args, Cardinal num_args);
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15 Widget XtVaAppInitialize(XtAppContext* app_context_return, String
16 application_class, XrmOptionDescRec* options, Cardinal
17 num_options, int* argc_in_out, String* argv_in_out, String*
18 fallback_resources, ...);
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21 app_context_return
22 Specifies the application context.
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24 application_class
25 Specifies the class name of this application, which usually
26 is the generic name for all instances of this application.
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28 options Specifies how to parse the command line for any application-
29 specific resources. The options argument is passed as a
30 parameter to XrmParseCommand. For further information, see
31 Xlib - C Language X Interface.
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33 num_options
34 Specifies the number of entries in the options list.
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36 argc_in_out
37 Specifies a pointer to the number of command line parameters.
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39 argv_in_out
40 Specifies the command line parameters.
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42 fallback_resources
43 Specifies resource values to be used if the application class
44 resource file cannot be opened or read, or NULL.
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46 args Specifies the argument list to override any other resource
47 specification for the created shell widget.
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49 num_args Specifies the number of entries in the argument list.
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51 ... Specifies the variable argument list to override any other
52 resource specification for the created shell widget.
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55 The XtAppInitialize function calls XtToolkitInitialize followed by
56 XtCreateApplicationContext, then calls XtOpenDisplay with dis‐
57 play_string NULL and application_name NULL, and finally calls XtAppCre‐
58 ateShell with application_name NULL, widget_class applicationShellWid‐
59 getClass, and the specified args and num_args and returns the created
60 shell. The modified argc and argv returned by XtDisplayInitialize are
61 returned in argc_in_out and argv_in_out. If app_context_return is not
62 NULL, the created application context is also returned. If the display
63 specified by the command line cannot be opened, an error message is
64 issued and XtAppInitialize terminates the application. If fall‐
65 back_resources is non-NULL, XtAppSetFallbackResources is called with
66 the value prior to calling XtOpenDisplay.
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68 XtAppInitialize and XtVaAppInitialize have been superceded by XtOpenAp‐
69 plication and XtVaOpenApplication respectively.
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72 XtOpenApplication(3), XtVaOpenApplication(3)
73 X Toolkit Intrinsics - C Language Interface
74 Xlib - C Language X Interface
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78X Version 11 libXt 1.1.5 XtAppInitialize(3)