Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!ucsd!sdcsvax!celece.ucsd.edu!markley
From: markley@celece.ucsd.edu
Newsgroups: comp.windows.x
Subject: Problem with widgets
Message-ID: <6642@sdcsvax.UCSD.Edu>
Date: 14 Jun 89 18:12:09 GMT
Sender: nobody@sdcsvax.UCSD.Edu
Reply-To: markley@celece.ucsd.edu ()
Organization: University of California, San Diego
Lines: 66

I am learning how to program using Xt and have run into a
problem.  I am trying to create a dialog widget and can get
it to work if I use the following.

Widget color_popup;

void create_color_popup(parent)
Widget parent;
{	/* start of color_popup creation */
Arg arg[10];

Widget color_box, red_form;

color_popup = XtCreatePopupShell (
		"color_popup",
		transientShellWidgetClass,
		parent,0,0);

color_box = XtCreateManagedWidget (
		"color_box",
		boxWidgetClass,
		color_popup,0,0);

XtSetArg ( arg[0], XtNlabel, "Enter red value" );
XtSetArg ( arg[1], XtNvalue, 0 );
red_form = XtCreateManagedWidget (
		"red_form",
		dialogWidgetClass,
		color_box,
		arg, 2 );
...
}

This creates a nice little popup with a modifyable text 
field.

If I do it the following way all I get is the title with
no text field.

static Arg	arglist_redform[] = {
	{XtNlabel, (XtArgVal) "Enter red value' },
	{XtNvalue, (XtArgVal) 0 }
};

change call to...

red_form = XtCreateManagedWidget (
		"red_form",
		dialogWidgetClass,
		color_box,
		arglist_redform,
		XtNumber(arglist_redform));

Is this the way that it is supposed to work or am I missing
something?  I have trouble believing that the static
declaration causes that much of a problem.  Sorry for the
length of the posting but I included only what I felt was
important.

Mike Markley
University of California, San Diego
markley@celece.ucsd.edu
markley@kubrick.ucsd.edu
disclaimer:
These opinions are mine.  The University could probably care
less what I say or do.