https://invisible-island.net/xterm/xtoolkit/
XtGetApplicationResources, XtVaGetApplicationResources - obtain appli-
cation resources
#include <X11/Intrinsic.h>
void XtGetApplicationResources(Widget w, XtPointer base, XtResourceList
resources, Cardinal num_resources, ArgList args, Cardinal
num_args);
void XtVaGetApplicationResources(Widget w, XtPointer base, XtRe-
sourceList resources, Cardinal num_resources, ...);
args Specifies the argument list to override resources obtained
from the resource database.
base Specifies the base address of the subpart data structure
where the resources should be written.
num_args Specifies the number of arguments in the argument list.
num_resources
Specifies the number of resources in the resource list.
resources Specifies the resource list for the subpart.
w Specifies the widget that wants resources for a subpart or
that identifies the resource database to search.
... Specifies the variable arguments to override resources
obtained from the resource database.
The XtGetApplicationResources function first uses the passed widget,
which is usually an application shell, to construct a resource name and
class list, Then, it retrieves the resources from the argument list,
the resource database, or the resource list default values. After
adding base to each address, XtGetApplicationResources copies the
resources into the address given in the resource list. If args is
NULL, num_args must be zero. However, if num_args is zero, the argu-
ment list is not referenced. The portable way to specify application
resources is to declare them as members of a structure and pass the
address of the structure as the base argument.
X Toolkit Intrinsics – C Language Interface
Xlib - C Language X Interface
X Version 11 libXt 1.1.5.2 XtGetApplicationResources(3)