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  #1  
Old 28-Jul-2004, 17:54
nkhambal nkhambal is offline
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How to hide characters from being displayed on screen as they are keyed in?

Hi,

In C programming,how can you hide the characters from being displayed on screen while they are being keyed in?For e.g Keying in passwords.

Thanks,
  #2  
Old 28-Jul-2004, 23:05
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WaltP WaltP is offline
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Quote:
Originally Posted by nkhambal
Hi,

In C programming,how can you hide the characters from being displayed on screen while they are being keyed in?For e.g Keying in passwords.

Thanks,
In Standard C, no. But a couple compilers have given the developer a way to do it. What compiler are you using and on what OS?
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Old 28-Jul-2004, 23:09
nkhambal nkhambal is offline
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Hello waltp,

I use GNU C complier (gcc) on linux.

Thanks,
  #4  
Old 29-Jul-2004, 03:45
nkhambal nkhambal is offline
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Hi Waltp,

I got a solution for my problem.I used getpass() function on linux platform as mentioned below.

CPP / C++ / C Code:
#define PASSPROMPT "Password: "

char *pass;

pass=getpass(PASSPROMPT);

It stores password in pass and does not display anything on screen.

Thanks,
  #5  
Old 06-Aug-2004, 11:18
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As a cheap method you could probally "jury-rig" it with a system clear command after every key is typed.
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  #6  
Old 06-Aug-2004, 19:43
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WaltP WaltP is offline
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EDIT by dsmith
The preceeding post was split as a seperate thread to the C++ Tutorials forum. Please click here to go to this thread.
END EDIT


Quote:
Originally Posted by davekw7x
Here is a routine that I picked up somewhere some time ago (sorry, I didn't record the source, but I am quite sure I didn't delete any copyright notice). If it turns out that it is copyrighted or patented or something: let me know.

I'm sure it's not copyrighted not proprietary. It's a standard way to implement getch() on *nix. When I was on a Unix system, I remember digging around and made an almost identical function.

Moderators:
This code would be a great addition to the tutorial section... hint, hint
;-)
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Last edited by dsmith : 10-Aug-2004 at 12:24. Reason: Split out post for a tutorial entry
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Old 09-Aug-2004, 04:04
Garth Farley Garth Farley is offline
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This is handy. Good idea WaltP, thread moved.
GF
  #8  
Old 09-Aug-2004, 19:01
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Quote:
Originally Posted by Garth Farley
This is handy. Good idea WaltP, thread moved.
GF
I was kinda hoping the important post would move, not the entire thread... ;-)
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Old 10-Aug-2004, 09:22
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And that's my fault, I was discussing your comment with dsmith in private when it should have been discussed in the MODERATOR forums. Garth wasn't aware that dsmith was going to be 'handling' the thread. Dsmith will follow up on this as soon as he has the time... Once again, I apologise for delaying the 'splitting' of this thread.
 
 
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