diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0ab8c58
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+slutpet
diff --git a/dat.h b/dat.h
new file mode 100644
index 0000000..09895e0
--- /dev/null
+++ b/dat.h
@@ -0,0 +1,5 @@
+typedef struct State State;
+struct State {
+	SDL_Window *win;
+	SDL_Renderer *ren;
+};
diff --git a/slutpet.c b/slutpet.c
index 7a85553..6585502 100644
--- a/slutpet.c
+++ b/slutpet.c
@@ -1,27 +1,77 @@
-#include <SDL3/SDL.h>
 #define SDL_MAIN_USE_CALLBACKS
+#include <SDL3/SDL.h>
 #include <SDL3/SDL_main.h>
 
+#include "dat.h"
+
 void
-SDL_AppQuit(void *appstate, SDL_AppResult result)
+SDL_AppQuit(void *as, SDL_AppResult res)
 {
+	State *st;
+
+	st = as;
+	if (st) {
+		SDL_Log("destroy renderer...");
+		SDL_DestroyRenderer(st->ren);
+		SDL_Log("destroy window...");
+		SDL_DestroyWindow(st->win);
+		SDL_Log("free state...");
+		SDL_free(st);
+	}
+
+	SDL_Log("bye!");
 	return;
 }
 
 SDL_AppResult
-SDL_AppEvent(void *appstate, SDL_Event *event)
+SDL_AppEvent(void *as, SDL_Event *ev)
 {
-	return SDL_APP_SUCCESS;
+	switch (ev->type) {
+	case SDL_EVENT_QUIT:
+		SDL_Log("quit requested");
+		return SDL_APP_SUCCESS;
+		break; /* unreachable; here for visual symmetry */
+	}
+
+	return SDL_APP_CONTINUE;
 }
 
 SDL_AppResult
-SDL_AppIterate(void *appstate)
+SDL_AppIterate(void *as)
 {
-	return SDL_APP_SUCCESS;
+	return SDL_APP_CONTINUE;
 }
 
 SDL_AppResult
-SDL_AppInit(void **appstate, int argc, char **argv)
+SDL_AppInit(void **as, int argc, char **argv)
 {
-	return SDL_APP_SUCCESS;
+	State *st;
+
+	SDL_Log("init sdl...");
+	if (!SDL_Init(SDL_INIT_VIDEO)) {
+		SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION,
+				"sdl init fail: %s", SDL_GetError());
+		return SDL_APP_FAILURE;
+	}
+
+	SDL_Log("alloc state...");
+	st = SDL_calloc(1, sizeof(State));
+	if (!st) {
+		SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION,
+				"mem alloc fail: %s", SDL_GetError());
+		return SDL_APP_FAILURE;
+	}
+	*as = st;
+
+	SDL_Log("create win+render...");
+	if (!SDL_CreateWindowAndRenderer("slutpet", 320, 240,
+				SDL_WINDOW_TRANSPARENT | SDL_WINDOW_BORDERLESS,
+				&st->win, &st->ren)) {
+		SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION,
+				"win creation fail: %s", SDL_GetError());
+		return SDL_APP_FAILURE;
+	}
+
+	SDL_Log("it work");
+	return SDL_APP_CONTINUE;
 }