static void XawVendorShellClassPartInit(WidgetClass cclass) { CompositeClassExtension ext; VendorShellWidgetClass vsclass = (VendorShellWidgetClass)cclass; if ((ext = (CompositeClassExtension) XtGetClassExtension (cclass, XtOffsetOf(CompositeClassRec, composite_class.extension), NULLQUARK, 1L, (Cardinal) 0)) == NULL) { ext = (CompositeClassExtension) XtNew (CompositeClassExtensionRec); if (ext != NULL) { ext->next_extension = vsclass->composite_class.extension; ext->record_type = NULLQUARK; ext->version = XtCompositeExtensionVersion; ext->record_size = sizeof (CompositeClassExtensionRec); ext->accepts_objects = TRUE; ext->allows_change_managed_set = FALSE; vsclass->composite_class.extension = (XtPointer) ext; } } }
void XtChangeManagedSet( WidgetList unmanage_children, Cardinal num_unmanage, XtDoChangeProc do_change_proc, XtPointer client_data, WidgetList manage_children, Cardinal num_manage) { WidgetList childp; Widget parent; int i; Cardinal some_unmanaged; Boolean call_out; CompositeClassExtension ext; XtAppContext app; Widget hookobj; XtChangeHookDataRec call_data; if (num_unmanage == 0 && num_manage == 0) return; /* specification doesn't state that library will check for NULL in list */ childp = num_unmanage ? unmanage_children : manage_children; app = XtWidgetToApplicationContext(*childp); LOCK_APP(app); parent = XtParent(*childp); childp = unmanage_children; for (i = num_unmanage; --i >= 0 && XtParent(*childp) == parent; childp++); call_out = (i >= 0); childp = manage_children; for (i = num_manage; --i >= 0 && XtParent(*childp) == parent; childp++); if (call_out || i >= 0) { XtAppWarningMsg(app, "ambiguousParent", XtNxtChangeManagedSet, XtCXtToolkitError, "Not all children have same parent", (String *)NULL, (Cardinal *)NULL); } if (! XtIsComposite(parent)) { UNLOCK_APP(app); XtAppErrorMsg(app, "invalidParent", XtNxtChangeManagedSet, XtCXtToolkitError, "Attempt to manage a child when parent is not Composite", (String *) NULL, (Cardinal *) NULL); } if (parent->core.being_destroyed) { UNLOCK_APP(app); return; } call_out = False; if (do_change_proc) { ext = (CompositeClassExtension) XtGetClassExtension(parent->core.widget_class, XtOffsetOf(CompositeClassRec, composite_class.extension), NULLQUARK, XtCompositeExtensionVersion, sizeof(CompositeClassExtensionRec)); if (!ext || !ext->allows_change_managed_set) call_out = True; } UnmanageChildren(unmanage_children, num_unmanage, parent, &some_unmanaged, call_out, XtNxtChangeManagedSet); hookobj = XtHooksOfDisplay(XtDisplay(parent)); if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { call_data.type = XtHunmanageSet; call_data.widget = parent; call_data.event_data = (XtPointer) unmanage_children; call_data.num_event_data = num_unmanage; XtCallCallbackList(hookobj, ((HookObject)hookobj)->hooks.changehook_callbacks, (XtPointer) &call_data); } if (do_change_proc) (*do_change_proc)(parent, unmanage_children, &num_unmanage, manage_children, &num_manage, client_data); call_out = (some_unmanaged && !call_out); ManageChildren(manage_children, num_manage, parent, call_out, XtNxtChangeManagedSet); if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { call_data.type = XtHmanageSet; call_data.event_data = (XtPointer) manage_children; call_data.num_event_data = num_manage; XtCallCallbackList(hookobj, ((HookObject)hookobj)->hooks.changehook_callbacks, (XtPointer) &call_data); } UNLOCK_APP(app); } /* XtChangeManagedSet */