Path: utzoo!attcan!uunet!mailrus!umich!caen!etsu!cmi.com!dave
From: dave@cmi.com (David Halonen)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Password Dialogs--what is the best way to do them?
Message-ID: <3142@etsu.CMI.COM>
Date: 11 Jul 90 16:44:21 GMT
Sender: news@etsu.CMI.COM
Organization: Center for Machine Intelligence, EDS Corp.
Lines: 37
References:<36805@shemp.CS.UCLA.EDU> <PXAMQ65@xavier.swarthmore.edu> <3663@adobe.UUCP>

A very simple solution:  Get the text string, rip of the last character 
typed in, store it, replace with a character of your choice, replace the 
original string with modified, wait for next char. 

Sample code follows:

do {
len = *displayStr;
ModalDialog( nil, &itemHit);
GetIText( itemHdl, &displayStr );
newLen = *displayStr;
if( newLen != len ) {
if( newLen > len ) {/*user added a char*/
sprintf( (char *) answer, "%s%c", answer, displayStr[ newLen ] );
displayStr[ newLen ] = (char) 0xA5;/*convert char to '%'*/
}
else {/*user deleted a char*/
*displayStr = newLen;
*(answer + len - 1) = (char) 0x00;/*adjust end of 'C' string*/
}
SetIText( itemHdl, displayStr );
}

} while ( (itemHit != okButton) & (itemHit != cancelButton) );

if ( itemHit == okButton ) {
  CtoPstr( (char *) answer );/*sprintf turns it into a C string*/
  if( EqualString( &answer, paPassword, false, false ) )
     valid = true;
}


Ugly, but it works.

David Halonen, Center for Machine Intelligence, Electronic Data Systems
Ann Arbor, MI (313) 995-0900
AppleLink: N0548  Internet: dave@cmi.com