Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!decwrl!hplabs!hpda!hpcuhb!hpcllla!hpcllca!shankar
From: shankar@hpcllca.HP.COM (Shankar Unni)
Newsgroups: comp.windows.x
Subject: Re: Help on Resource Conversion anyone?
Message-ID: <5130002@hpcllca.HP.COM>
Date: 15 Feb 89 01:59:39 GMT
References: <100920054@hpcvlx.HP.COM>
Organization: Hewlett Packard Calif. Language Lab
Lines: 17

> Unfortunately, this is where funny little compiler/architecture
> problems come into play.  The type of arg.value is caddr_t.  Due to the
> implementation of promotion rules on some machines (I'm not a compiler 
> wizard, so the implementation could be entirely correct), when a float 
> is assigned to a caddr_t, it is converted to an int.  But you don't
> want an int?  Too dang bad.  You'll have to come up with a work-around.

Like

    float f = 1.00;
    ...
    XtSetArg(arg[n], XtSomeResource, *((caddr_t *)&f)); n++;

Assuming, of course, that a caddr_t and a float have the same size (otherwise
you're hosed..);
---
Shankar Unni.