F1 and other function keys ASCII codes in c++

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#include <conio.h>
#include <iostream.h>

void main()
{
    cout<<"press ESC to exit ":
    while(getch()!=27);
}

this program will end when we press ESC because ESC = 27
but now i want to make a program i which when user press F1 program show help
or other working for i want value, ASCII code ,or any thing about F1 key and all function
keys.please guide me in this matter.
thanks
bye

Posted 24-Apr-10 4:10am

shahaz akber1

Updated 24-Apr-10 4:18am

Kristian Sixhøj

v2

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3 solutions

Solution 2

Don't confuse the name of the key with the name of a character: not all characters are generated by a key, and not all keys generate charaters.

Function keys, like arrows etc. don't generate characters. Hence they must be read with lower level functions (like the win32 Keyboard API)

In console mode -howerver- they may generate character sequences (typically a '\0' followed by a code).

You can check it with a loop that -after getting a char with getch- prints it as a number.

if you press "A" you will get 65, if you press F1 you will probably get
0, and getch will succeed again taking one more character form the keyboard driver buffer, (without any new pressure) that is the functional code character (note: it may be the same of another regular character, so you cannot simply discard the 0: it has a semantic meaning).

Posted 24-Apr-10 11:19am

Emilio Garavaglia

Solution 3

You've asked this twice and been answered twice. Please don't ask it again. In future, if you don't understand an answer, edit your post to explain why you don't get it. IF you still don't get it, consider that the answer will not change and it's your level of skill and understanding that needs to change.

Posted 24-Apr-10 12:27pm

Christian Graus

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CPallini · Accepted Answer · 2010-04-24T04:39:00

Solution 1

See if this [^] helps.
:)

Posted 24-Apr-10 4:39am

CPallini