| Re: password-entry widget [message #16462] |
Mon, 26 July 1999 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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David Fanning (davidf@dfanning.com) writes:
> Waleed Al-Nuaimy (geoserv@compuserve.com) writes:
>
>> Hi. I'm trying to get a WIDGET_TEXT to behave as a password-entry field,
>> echoing asterisks.. I was hoping someone had done this before.
>
> In the text widget, turn the keyword EDITABLE off and the
> keyword ALL_EVENTS on. Now you will be getting each
> input character event in your event handler. Simply
> take each character as it comes in and build your
> password internally. But write asterisks to the text
> widget. (Only you can edit the text widget, NOT the
> user.)
It wasn't difficult to modify an event handler named
Get Image_Integer_Only from my GetImage program to be
a password event handler, so I just went ahead and
did it. You call the program like this:
thePassword = Password()
If you are calling it from a widget program, be certain
you pass it a group leader. Probably something like this:
thePassword = Password(Group_Leader=event.top)
You can find the code here:
ftp://www.dfanning.com/pub/dfanning/outgoing/misc/password.p ro
I wouldn't be using this for national security applications.
I can think of several ways to hack it myself. But it
should keep out the casual user. It is certainly NOT
bomb-proof, but it will give you someplace to start. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: password-entry widget [message #16463 is a reply to message #16462] |
Mon, 26 July 1999 00:00  |
davidf
Messages: 2866
Registered: September 1996
|
Senior Member |
|
|
Waleed Al-Nuaimy (geoserv@compuserve.com) writes:
> Hi. I'm trying to get a WIDGET_TEXT to behave as a password-entry field,
> echoing asterisks.. I was hoping someone had done this before.
In the text widget, turn the keyword EDITABLE off and the
keyword ALL_EVENTS on. Now you will be getting each
input character event in your event handler. Simply
take each character as it comes in and build your
password internally. But write asterisks to the text
widget. (Only you can edit the text widget, NOT the
user.)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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