Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!veritas!amdcad!sun!exodus!argv
From: argv@turnpike.Eng.Sun.COM (Dan Heller)
Newsgroups: comp.windows.x
Subject: Re: Picture fields and Text Widgets
Keywords: Picture fields Text widget
Message-ID: <3758@exodus.Eng.Sun.COM>
Date: 30 Nov 90 09:25:34 GMT
References: <Nov.29.03.44.08.1990.491@paul.rutgers.edu>
Sender: news@exodus.Eng.Sun.COM
Distribution: usa
Organization: O'Reilly && Associates
Lines: 49

In article emuleomo@paul.rutgers.edu (Emuleomo) writes:
> Hi Xworld,
interesting thought :-)

> I need the ability to force every letter typed into a text widget to 
> UPPERCASE or force the text widget to accept only digits 0-9, or to coerce
> data entry to be a telephone number in the style (999) 999-9999 etc..
> I need this to be done AS THE USER ENTERS THE DIGITS. So that the user
> can enter 8005551212 and it will appear as (800) 555-1212.
> Can this be done?

    text_w = XtVaCreateManagedWidget("name", xmTextWidgetClass, parent,
	XmNverifyBell, False,  /* shouldn't this be the default? */
	... /* fill in other resource-values here */
	NULL);
    ...
    XtAddCallback(text_w, XmNmodifyVerifyCallback, my_func, "data");
    ...

void
my_func(text_w, data, cbs)
Widget  textsw;
int *file_saved;
XmTextVerifyCallbackStruct *cbs;
{
    char c;

    if (cbs->reason == XmCR_MODIFYING_TEXT_VALUE) {
	c = cbs->text->ptr[0];
	if (isupper(c))
	    cbs->doit = True; /* already upper case, let it go */
	else {
	    /* don't let the text widget do this one - we'll handle it */ 
	    cbs->doit = False;
	    XmTextInsert(text_w, cbs->currInsert, toupper(c));
	}
    }
}

You can figure out the rest.  Note, #include <ctype.h> for the
isupper() and toupper() macros.

> Please E-mail.
stay tuned to the newsgroup :-)
--
dan
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