XtSetValues(3Xt) X11R5 XtSetValues(3Xt)NAME
XtSetValues, XtSetSubvalues, XtGetValues, XtGetSubvalues - obtain and
set widget resources
SYNTAX
void XtSetValues(w, args, num_args)
Widget w;
ArgList args;
Cardinal num_args;
void XtSetSubvalues(base, resources, num_resources, args, num_args)
XtPointer base;
XtResourceList resources;
Cardinal num_resources;
ArgList args;
Cardinal num_args;
void XtGetValues(w, args, num_args)
Widget w;
ArgList args;
Cardinal num_args;
void XtGetSubvalues(base, resources, num_resources, args, num_args)
XtPointer base;
XtResourceList resources;
Cardinal num_resources;
ArgList args;
Cardinal num_args;
ARGUMENTS
args Specifies the argument list of name/address pairs that con‐
tain the resource name and either the address into which the
resource value is to be stored or their new values.
base Specifies the base address of the subpart data structure
where the resources should be retrieved or written.
num_args Specifies the number of arguments in the argument list.
resources Specifies the nonwidget resource list or values.
num_resources
Specifies the number of resources in the resource list.
w Specifies the widget.
DESCRIPTION
The function starts with the resources specified for the widget fields
and proceeds down the subclass chain to the widget. At each stage, it
writes the new value (if specified by one of the arguments) or the
existing value (if no new value is specified) to a new widget data
record. then calls the set_values procedures for the widget in super‐
class-to-subclass order. If the widget has any non-NULL set_val‐
ues_hook fields, these are called immediately after the corresponding
set_values procedure. This procedure permits subclasses to set nonwid‐
get data for
If the widget's parent is a subclass of also updates the widget's con‐
straints. It starts with the constraint resources specified for and
proceeds down the subclass chain to the parent's class. At each stage,
it writes the new value or the existing value to a new constraint
record. It then calls the constraint set_values procedures from down
to the parent's class. The constraint set_values procedures are called
with widget arguments, as for all set_values procedures, not just the
constraint record arguments, so that they can make adjustments to the
desired values based on full information about the widget.
determines if a geometry request is needed by comparing the current
widget to the new widget. If any geometry changes are required, it
makes the request, and the geometry manager returns or If calls the
widget's resize procedure. If resets the geometry fields to their
original values. If calls the set_values_almost procedure, which
determines what should be done and writes new values for the geometry
fields into the new widget. then repeats this process, deciding once
more whether the geometry manager should be called.
Finally, if any of the set_values procedures returned causes the wid‐
get's expose procedure to be invoked by calling the Xlib function on
the widget's window.
The function stores resources into the structure identified by base.
The function starts with the resources specified for the core widget
fields and proceeds down the subclass chain to the widget. The value
field of a passed argument list should contain the address into which
to store the corresponding resource value. It is the caller's respon‐
sibility to allocate and deallocate this storage according to the size
of the resource representation type used within the widget.
If the widget's parent is a subclass of then fetches the values for any
constraint resources requested. It starts with the constraint
resources specified for and proceeds down to the subclass chain to the
parent's constraint resources. If the argument list contains a
resource name that is not found in any of the resource lists searched,
the value at the corresponding address is not modified. Finally, if
the get_values_hook procedures are non-NULL, they are called in super‐
class-to-subclass order after all the resource values have been fetched
by This permits a subclass to provide nonwidget resource data to
The function obtains resource values from the structure identified by
base.
SEE ALSO
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
XtSetValues(3Xt)
