Esc key

[Baso]

Hello everybody

I just want to know how to implement the Esc key from the keyboard in a console program
in which if the Esc key pressed at any time in the program, (by any time I mean at inputting, outputting, calculating, or just looping ) it makes a call for a specific function.
How to do That?

Note :
Operating system (windows 7 )
Compiler : QT creator 4.8

Please help
Thanks

[hamsterman]

While such thing could be hacked together, console is not created for that. Just start making proper windowed programs. It's not that hard. If you want to make a game, see SFML or SDL, if not, try Qt or GTK (in each pair, the first is more productive, but may be harder to set up).

[Duthomhas]

The options you have are to unbuffer your input and handle all individual keypresses yourself, or to use a keyboard hook.

Google "msdn SetWindowsHook" for information on the second method.

Good luck!

[Baso]

@ Duoas

How to unbuffer the input?

*I can't use the second option you mentioned because I'm working in qt not visual studio.

[whitenite1]

@Baso

If your checking for key presses with GetKeyState, then try adding

if(GetKeyState('\x1B')<0)//Pressing 'ESC' key
{
  cout << "ESC key pressed.." << endl;// Put here what is to happen when this key pressed
}

[Duthomhas]

Qt doesn't prevent you from using the Windows API directly, and setting a keyboard hook doesn't do anything that will modify your program's normal operation.

Though, I do believe Qt has slots for keyboard hooks... I has been a long time since I've messed with it and I'm not interested in browsing the documentation myself right now...