a simple getch question

This is a discussion on a simple getch question within the C++ Programming forums, part of the General Programming Boards category; I suppose i didnt understand what this means, The _getch function reads a single character from the console without echoing. ...

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    a simple getch question

    I suppose i didnt understand what this means,

    The _getch function reads a single character from the console without echoing. _getche reads a single character from the console and echoes the character read. Neither function can be used to read CTRL+C. When reading a function key or an arrow key, _getch and _getche must be called twice; the first call returns 0 or 0xE0, and the second call returns the actual key code.
    how can be call twice? Does not means needs to wait for two press to work? Nevertheless, i can not catch arrow key.

    using BC++5.5(commandline free compiler) for dos.

    thanks
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    Registered User Codeplug's Avatar
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    thank you i will check.
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    Thanks for this forum and surely people share their experiences.

    I am not writing here any code because tried every variation to test.

    I tried all experiences in forum i found(c/c++) but no success.

    My tests working on win95 but not work on my win98. So, that is not my fault, i think.

    My debug resulting only 0xE0 for arrow keys, on my Win98.

    I think two options to this,

    either win98 keyboard drivers problem, or maybe about my multimedia keyboard. Unfortunately i can not change my keyboard for test now.

    Did anybody experienced a problem with catching extended keys(arrows, home, pagedown) in DOS _getch()?

    Did anybody experienced such problem?

    thanks
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    and the hat of wrongness Salem's Avatar
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    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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    Thank you Salem, but as i discussed my last post, i tried all of them in that link too(as others), even i mostly become hopeful in fact.

    I am already searching microsoft articles about this situation and find some articles about problems on either updates or config changes on system. But not tried yet.

    I am already suspicious on drivers. Because one of the test snippet on the thread which you point me is working on win95(other PC -my friend) but i can not change my keyboard or else. I think i am not the only people experiencing this problem.

    Problem is not about programming. That snippet is working in fact, but not on my machine.

    Thanks
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    I suppose my problem about, win98(not SE).

    Microsoft Knowledge Base Article - 214408 (Q214408)

    is explaining such problem. But is fixed in SE. Maybe somebody looks here in future. Must think this too.

    http://support.microsoft.com/default...b;en-us;214408
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