diff --git a/Makefile b/Makefile
index c1935a1..5a70dc8 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,12 @@ HEADERSDIR = $(PREFIX)/include/glazir
 LIBDIR = $(PREFIX)/lib64
 
 HEADERS = src/glazir.h \
+					src/types.h \
+					src/window.h \
 					src/version.h
 
-OBJ = src/main.o
+OBJ = src/window.o \
+			src/main.o
 
 libglazir.a: $(OBJ)
 	ar rcs libglazir.a $(OBJ)
@@ -27,3 +30,6 @@ uninstall/static:
 	rm $(LIBDIR)/libglazir.a
 
 uninstall: uninstall/headers uninstall/static
+
+clean:
+	rm src/*.o
diff --git a/src/glazir.h b/src/glazir.h
index d60dde2..b68dcf3 100644
--- a/src/glazir.h
+++ b/src/glazir.h
@@ -2,5 +2,12 @@
 #define GLAZIR
 
 #include "version.h"
+#include "window.h"
+
+void gr_init(int argc, char *argv[]);
+
+void gr_event(gr_Event *event);
+
+void gr_frame();
 
 #endif
diff --git a/src/main.c b/src/main.c
index e69de29..c3a2ce5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -0,0 +1,36 @@
+#define SDL_MAIN_USE_CALLBACKS 1
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+
+#include "glazir.h"
+
+SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
+{
+	if (!SDL_Init(SDL_INIT_VIDEO)) {
+		SDL_Log("Не удалось инициализировать SDL: %s", SDL_GetError());
+		return SDL_APP_FAILURE;
+	}
+
+	gr_init(argc, argv);
+
+	return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event)
+{
+	gr_event(event);
+
+	return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult SDL_AppIterate(void *appstate)
+{
+	gr_frame();
+
+	return SDL_APP_CONTINUE;
+}
+
+void SDL_AppQuit(void *appstate, SDL_AppResult result)
+{
+
+}
diff --git a/src/types.h b/src/types.h
new file mode 100644
index 0000000..0652aaf
--- /dev/null
+++ b/src/types.h
@@ -0,0 +1,10 @@
+#include <SDL3/SDL.h>
+
+struct _gr_Window {
+	SDL_Window*   w;
+	SDL_Renderer* r;
+};
+
+typedef struct _gr_Window gr_Window;
+
+typedef SDL_Event gr_Event;
diff --git a/src/window.c b/src/window.c
new file mode 100644
index 0000000..6ee97a1
--- /dev/null
+++ b/src/window.c
@@ -0,0 +1,11 @@
+#include "window.h"
+
+int gr_createWindow(const char* title, int width, int height, gr_Window* window)
+{
+	return SDL_CreateWindowAndRenderer(title, width, height, 0, &window->w, &window->r);
+}
+
+void gr_drawWindow(gr_Window* window)
+{
+	SDL_RenderPresent(window->r);
+}
diff --git a/src/window.h b/src/window.h
new file mode 100644
index 0000000..e92fd1e
--- /dev/null
+++ b/src/window.h
@@ -0,0 +1,5 @@
+#include "types.h"
+
+int gr_createWindow(const char* title, int width, int height, gr_Window* window);
+
+void gr_drawWindow(gr_Window* window);