Locking all keybord keys exept numbers 0-9

This is a discussion on Locking all keybord keys exept numbers 0-9 within the C++ Programming forums, part of the General Programming Boards category; As the thread name says. How would I lock all keys without the numbers 0-9? Thanks...

  1. #1
    Pawn, Pascal and C++
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    Locking all keybord keys exept numbers 0-9

    As the thread name says.
    How would I lock all keys without the numbers 0-9?

    Thanks

  2. #2
    Absent Minded Programmer
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    howabout, instead of locking everything. just create functionality for 1-9? and nothing else?
    Sometimes I forget what I am doing when I enter a room, actually, quite often.

  3. #3
    Frequently Quite Prolix dwks's Avatar
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    Lock? You mean, not recieve them?

    Using getch(), you could do something like this:
    Code:
    int c;
    
    for(;;) {
        c = getch();
        if(isdigit(c)) {
            std::cout << c;
            // process number here
        }
    }
    but getch() isn't standard.

    You could just use getline() and ignore anything that isn't isdigit().
    dwk

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  4. #4
    and the hat of wrongness Salem's Avatar
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    Try to imagine someone asking which OS/Compiler.

    Nevermind - Which OS/Compiler?

    What constitutes "locked" anyway when you have certain keys like alt-tab in windows for choosing other programs - do you want to lock those as well?

  5. #5
    Pawn, Pascal and C++
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    What constitutes "locked" anyway when you have certain keys like alt-tab in windows for choosing other programs - do you want to lock those as well?
    Hmm... Yes really. Its a password as you probably understood. I dont want people to be able to just "go out" of it.

    Nevermind - Which OS/Compiler?
    Windows XP
    Dev-C++

  6. #6
    and the hat of wrongness Salem's Avatar
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    > I dont want people to be able to just "go out" of it.
    Be careful here - if you go round just locking people out of their machines your software will be regarded as malware. Besides, if they alt-tab, it's just sending focus to another program and yours goes to the background - why would that matter to you.

    Nobody elses password input locks the whole machine in the way you seem to be wanting to.

    Seems to me all you're really after is all input, and then you apply isdigit() to each input character.

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