XtAppInitialize
Section: XT FUNCTIONS (3)
Updated: libXt 1.0.7
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NAME
XtAppInitialize, XtVaAppInitialize - initialize, open, or close a display
SYNTAX
-
- Widget XtAppInitialize(XtAppContext* app_context_return, String
application_class, XrmOptionDescRec* options, Cardinal
num_options, int* argc_in_out, String* argv_in_out, String*
fallback_resources, ArgList args, Cardinal num_args);
-
- Widget XtVaAppInitialize(XtAppContext* app_context_return, String
application_class, XrmOptionDescRec* options, Cardinal
num_options, int* argc_in_out, String* argv_in_out, String*
fallback_resources, ...);
ARGUMENTS
- app_context_return
-
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.
- 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.
- num_options
-
Specifies the number of entries in the options list.
- argc_in_out
-
Specifies a pointer to the number of command line parameters.
- argv_in_out
-
Specifies the command line parameters.
- fallback_resources
-
Specifies resource values to be used if the application class resource
file cannot be opened or read, or NULL.
- args
-
Specifies the argument list to override any other resource specification
for the created shell widget.
- num_args
-
Specifies the number of entries in the argument list.
- ...
-
Specifies the variable argument list to override any other resource
specification for the created shell widget.
DESCRIPTION
The
XtAppInitialize
function calls
XtToolkitInitialize
followed by
XtCreateApplicationContext,
then calls
XtOpenDisplay
with display_string NULL and application_name NULL, and
finally calls
XtAppCreateShell
with application_name NULL, widget_class
applicationShellWidgetClass,
and the specified args and num_args and returns the
created shell. The modified argc and argv returned by
XtDisplayInitialize
are returned in argc_in_out and argv_in_out. If
app_context_return is not NULL, the created application context
is also returned. If the display specified by the command line cannot
be opened, an error message is issued and
XtAppInitialize
terminates the application. If fallback_resources is non-NULL,
XtAppSetFallbackResources
is called with the value prior to calling
XtOpenDisplay.
XtAppInitialize and XtVaAppInitialize have been superceded by
XtOpenApplication
and
XtVaOpenApplication
respectively.
SEE ALSO
XtOpenApplication(3Xt), XtVaOpenApplication(3Xt)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface