montnaro@spyder.crd.ge.com (Skip Montanaro) (05/08/91)
I have the following code in an application:
XtGetResourceList(XtClass(instance->id), &resources, &count);
where instance->id is of type Widget, resources is of type XtResourceList,
and count is of type Cardinal.
The function always returns the widget-specific data back, as opposed to the
class-specific data. How does XtGetResourceList know what the widget id is,
since it's getting a WidgetClass as input, not a Widget?
I have a similar call to XtGetConstraintResourceList:
XtGetConstraintResourceList(XtClass(instance->id), &resources, &count);
It always sets resources to NULL, even if the widget specified by
instance->id is a child of an XmForm widget. Am I calling it incorrectly?
Thx,
--
Skip (montanaro@crdgw1.ge.com)rlh2@ukc.ac.uk (R.L.Hesketh) (05/09/91)
In article <MONTNARO.91May8095931@spyder.crd.ge.com> montanaro@crdgw1.ge.com (Skip Montanaro) writes: > XtGetResourceList(XtClass(instance->id), &resources, &count); >The function always returns the widget-specific data back, as opposed to the >class-specific data. How does XtGetResourceList know what the widget id is, >since it's getting a WidgetClass as input, not a Widget? I'd be extremely surprised if it did! You are getting back the class-specific data .. by this I think you mean the default_type and default_address? These will be correct for the WidgetClass given. The resource value of a particular widget instance may indeed have the same value as that returned by XtGetResourceList but this is because it has been created with the class default value. > XtGetConstraintResourceList(XtClass(instance->id), &resources, &count); > >It always sets resources to NULL, even if the widget specified by >instance->id is a child of an XmForm widget. Am I calling it incorrectly? No you must give it the Class of the constraint parent, i.e. if (XtParent(instance->id) != NULL) XtGetConstraintResourceList(XtClass(XtParent(instance->id)), &resources, &count); Richard