XtOpenApplication(3Xt) XT FUNCTIONS XtOpenApplication(3Xt)
NAME
XtOpenApplication, XtVaOpenApplication - initialize, open,
or close a display
SYNTAX
Widget XtOpenApplication(XtAppContext *app_context_return,
String application_class, XrmOptionDescRec *options,
Cardinal num_options, int *argc_in_out, String
*argv_in_out, String *fallback_resources, WidgetClass
widget_class, ArgList args, Cardinal num_args);
Widget XtVaOpenApplication(XtAppContext *app_context_return,
String application_class, XrmOptionDescRec *options,
Cardinal num_options, int *argc_in_out, String
*argv_in_out, String *fallback_resources, WidgetClass
widget_class, ...);
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 argu-
ment 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 appli-
cation class resource file cannot be opened or
read, or NULL.
widget_class
Specifies the widget class of the shell to be
created.
XFree86 Version 4.5.0 1
XtOpenApplication(3Xt) XT FUNCTIONS XtOpenApplication(3Xt)
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 XtOpenApplication function calls XtToolkitInitialize
followed by XtCreateApplicationContext, then calls XtOpen-
Display with display_string NULL and application_name NULL,
and finally calls XtAppCreateShell with application_name
NULL, the specified widget_class, 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 XtOpenApplication 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
XtAppInitialize(3Xt), XtVaAppInitialize(3Xt)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
XFree86 Version 4.5.0 2