Keyboard Input

This is a discussion on Keyboard Input within the C++ Programming forums, part of the General Programming Boards category; I want to ask something about the keyboard input in Borland C++ v3.0. I wanted to ask how u get ...

  1. #1
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    Keyboard Input

    I want to ask something about the keyboard input in Borland C++ v3.0. I wanted to ask how u get the input for arrowkeys..
    i-e what is their ascii values..?

  2. #2
    Hamster without a wheel iain's Avatar
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    the arrow keys return a scan code that is hardware dependant, also they are extended bit encoded - the first digit they return is a zero and then they return the scan code. To find out what code they return on your system write a key detector that gets the key loops back after a zero and prints the integer value.


    int check_key(); //begin checking function
    {
    int keypress; //holds the scan code of the keypress
    keypress=getch();//get the keypress
    if (keypress==0){check_key();}//check for extended key
    else
    cout<<keypress//print the scan code
    int wait = getch();//wait for a keypress
    }//end function

    call this from main,
    hope this helps
    Last edited by iain; 01-13-2002 at 04:03 PM.
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  3. #3
    A Banana Yoshi's Avatar
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    try:

    int a;
    a=getch();
    cout << a;
    //loop
    Yoshi

  4. #4
    Registered User GrNxxDaY's Avatar
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    do I have to include a special library class function header thingy? I try it in dev-c++4, and i get implicit declaration of getch()
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  5. #5
    Banned master5001's Avatar
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    I believe getch() is in conio.h.

  6. #6
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    #include <mingw_conio.h> if conio.h doesn't work

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