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Disable ALT Key

Posted on 2004-09-03
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Last Modified: 2010-04-01
Hello all,

Is there a way to disable the ALT key in a console program?  I only want to disable the key from working in the console window, not in all windows.  It will be running on a Win 2K system.

Thanks,
Tony
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Question by:fattumsdad
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3 Comments
 
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Expert Comment

by:jkr
ID: 11986798
Hm, let me put it like that - what do you want to achieve by that? There might be a way doing that differently, using a less stony trail than I can see now doing that...
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by:fattumsdad
ID: 11986864
Actually, I made a mistake in my question...  what I should have said was, the CTRL key.  My mind was on ALT for some reason :)
I want to stop CTRL-C from terminating the application.  
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Accepted Solution

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jkr earned 1200 total points
ID: 11990156
>>I want to stop CTRL-C from terminating the application

Oh, then, just use a handler that catches that:

#include <windows.h>
#include <signal.h>
#include <iostream>
using namespace std;

void __cdecl CtrlCHandler ( int nSig) {

 // do nothing
 cout << "CTRL+C has been pressed" << endl;

 signal  (   SIGINT,     CtrlCHandler);
 signal  (   SIGBREAK,   CtrlCHandler);
}

int main () {

 signal  (   SIGINT,     CtrlCHandler);
 signal  (   SIGBREAK,   CtrlCHandler);

 while ( true) Sleep ( 100);
}
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