Implement remaning keys

Stub/diabloui.cpp

@@ -32,7 +32,6 @@ BOOL __stdcall UiTitleDialog(int a1)
 			case SDL_MOUSEBUTTONDOWN:
 				return TRUE;
 			case SDL_QUIT:
-				SDL_Quit();
 				exit(0);
 			}
 		}
@@ -548,7 +547,6 @@ BOOL __stdcall UiSelHeroSingDialog(
 				}
 				break;
 			case SDL_QUIT:
-				SDL_Quit();
 				exit(0);
 			}
 		}
@@ -816,7 +814,6 @@ BOOL __stdcall UiSelHeroMultDialog(
 				}
 				break;
 			case SDL_QUIT:
-				SDL_Quit();
 				exit(0);
 			}
 		}
@@ -860,7 +857,6 @@ BOOL __stdcall UiCreditsDialog(int a1)
 			case SDL_MOUSEBUTTONDOWN:
 				return TRUE;
 			case SDL_QUIT:
-				SDL_Quit();
 				exit(0);
 			}
 		}
@@ -1022,7 +1018,6 @@ int __stdcall UiSelectProvider(int a1, _SNETPROGRAMDATA *client_info, _SNETPLAYE
 				}
 				break;
 			case SDL_QUIT:
-				SDL_Quit();
 				exit(0);
 			}
 		}

Stub/miniwin_msg_sdl.cpp

@@ -13,6 +13,7 @@ static int translate_sdl_key(SDL_Keysym key)
 	case SDLK_ESCAPE:
 		return VK_ESCAPE;
 	case SDLK_RETURN:
+	case SDLK_KP_ENTER:
 		return VK_RETURN;
 	case SDLK_TAB:
 		return VK_TAB;
@@ -63,6 +64,8 @@ static int translate_sdl_key(SDL_Keysym key)
 	case SDLK_LSHIFT:
 	case SDLK_RSHIFT:
 		return VK_SHIFT;
+	case SDLK_PRINTSCREEN:
+		return VK_SNAPSHOT;
 
 	default:
 		if (sym >= SDLK_a && sym <= SDLK_z) {

Stub/sdlrender.cpp

@@ -719,11 +719,12 @@ void FreeMenuItems()
 	tmp = pPcxFont42yImage;
 	pPcxFont42yImage = NULL;
 	mem_free_dbg(tmp);
-	TTF_Quit();
 }
 
 void SdlDiabloMainWindow()
 {
+	atexit(SDL_Quit);
+	atexit(TTF_Quit);
 	SDL_Init(SDL_INIT_EVERYTHING);
 
 	window = SDL_CreateWindow("Diablo", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_RESIZABLE);