Trap ctrl+c with SDL2 Win7

Below is the keyboard and window events code I use. I had read on other forums that SDL_QUIT is suppose to trap ctrl+c. That may have been the case in SDL 1.2 or earlier but it is not working for SDL2 on Win7. How can I trap CTRL+C? on Win7

UPDATE: The code below is working and tested as suggested below

  // main loop
	int done;
    while (!done)
    {
        // process events
        SDL_Event event;
        while (SDL_PollEvent(&event))
        {
          switch (event.type) {
            case SDL_QUIT: // signal when window "X" icon pressed
              done = 1;
              break;
								
            case SDL_KEYDOWN:
						  if( event.key.keysym.sym == SDLK_c && // ctrl c pressed
						    (event.key.keysym.mod & KMOD_CTRL) != 0 ) {
                done = 1;
                break;
              }						
            switch (event.key.keysym.scancode)  {
              case SDL_SCANCODE_SPACE:  // space bar pressed
                  printf("  space bar down\n");
                  break;					
              /*  // other key down traps go here
				       case SDL_SCANCODE_xxx:
                  printf("  xxxx key down\n");				
                  break;  */
            }
            break;
								
            case SDL_KEYUP:
                switch (event.key.keysym.scancode)
                {
                case SDL_SCANCODE_ESCAPE :  // escape key pressed
                    printf("  escape key down\n");
                    done = 1;					
                    break;
                case SDL_SCANCODE_SPACE:
                    printf("  space bar up\n");  // space bar released
                    break;		
										
                /*  // other key up traps go here
				        case SDL_SCANCODE_xxx:
                    printf("  xxxx key up\n");				
                    break;  */
                }
                break;
            }
        }
    }

HI jwzumwalt, hope this helps:

int done = 0; // set to 1 to close window
while (!done) { // until done flag triggered
SDL_Event event; // process events

const Uint8 *keyboardState = (const Uint8 *) SDL_GetKeyboardState( NULL );

if ( (KeyboardState[SDL_SCANCODE_LCTRL] || KeyboardState[SDL_SCANCODE_RCTRL]) && keyboardState[SDL_SCANCODE_C] ) {
	done = 1;
}


while (SDL_PollEvent(&event)) {

Yes that helps! I am new to SDL2 but that code is a familiar way of accomplishing tasks in PHP and I will be able to apply that in the future - thanks!.

If you start the game from a terminal, and in the terminal (i.e. when the terminal window, not the game window, has focus) press Ctrl-C, that will generate a SDL_QUIT event.

You could integrate handling Ctrl-C while the game has focus in your event handling code like the following:

    SDL_Event event;                   // process events
    while (SDL_PollEvent(&event)) {
      switch (event.type)  {
        case SDL_QUIT:                 // window close icon
          done = 1;                    // set done flag to quit 
          break;
					
        case SDL_KEYDOWN:
            if( event.key.keysym.sym == SDLK_c
               && (event.key.keysym.mod & KMOD_CTRL) != 0 ) {
                done = 1;
                break;
            }

            switch (event.key.keysym.scancode)  {
                // ... your other code ...

Thanks Mr. Gibson, your addition will make this subject complete for anyone doing a search :slight_smile:

…or you could just do things the proper Windows way, where the quit command is ALT-F4, and leave it at that, and not screw up things for people who try to use CTRL-C to [C]opy highlighted text to the clipboard.

When in Rome, do as the Romans do. When on Windows 7, follow Windows platform conventions rather than Linux ones.

In Linux GUI programs, Ctrl-C is also used for copy to clipboard, it only means “exit program” in the terminal

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