How to get out of infinite while loop by pressing esc in Qt?

Question

while(1){
    //doing some task
    if(ESC_PRESSED)
        break;
}

Possible duplicate of [How to handle keypress events in a Qt console application?](http://stackoverflow.com/questions/7543313/how-to-handle-keypress-events-in-a-qt-console-application) — demonplus, May 26 '16 at 10:17

score 2 · Answer 1 · answered May 26 '16 at 09:52

I have little experience with qt but in general I would guess that you have to register somewhere to recieve something like a ESCKeyPressedEvent. When you recieve the event you would do something like this:

bool esc_was_pressed = false;
void on_esc_pressed(){
    esc_was_presed = true;
}

and in your loop

while(!esc_was_pressed){
    //doing some task
}

Actually I think you will just recieve a KeyPressedEvent and have to do something like:

void on_key_pressed(KEY key){
    if (key == ESC_KEY) esc_was_pressed = true;
}

How to get out of infinite while loop by pressing esc in Qt?

1 Answers1