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diff --git a/pugl/pugl.h b/pugl/pugl.h
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+/*
+  Copyright 2012 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file pugl.h API for Pugl, a portable micro-framework for GL UIs.
+*/
+
+#ifndef PUGL_H_INCLUDED
+#define PUGL_H_INCLUDED
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#else
+#    include <stdbool.h>
+#endif
+
+typedef struct PuglWindowImpl PuglWindow;
+
+/**
+   A native window handle.
+
+   For X11, this is a Window.
+*/
+typedef intptr_t PuglNativeWindow;
+
+typedef enum {
+	PUGL_SUCCESS = 0
+} PuglStatus;
+
+/**
+   Handle for opaque user data.
+*/
+typedef void* PuglHandle;
+
+typedef void (*PuglCloseFunc)(PuglWindow* handle);
+typedef void (*PuglDisplayFunc)(PuglWindow* handle);
+typedef void (*PuglKeyboardFunc)(PuglWindow* handle, bool press, uint32_t key);
+typedef void (*PuglMotionFunc)(PuglWindow* handle, int x, int y);
+typedef void (*PuglMouseFunc)(PuglWindow* handle,
+                              int button, int state,
+                              int x, int y);
+typedef void (*PuglReshapeFunc)(PuglWindow* handle, int width, int height);
+
+/**
+   Create a new GL window.
+   @param parent Parent window, or 0 for top level.
+   @param title Window title, or NULL.
+   @param width Window width in pixels.
+   @param height Window height in pixels.
+*/
+PuglWindow*
+puglCreate(PuglNativeWindow parent, const char* title, int width, int height);
+
+/**
+   Set the handle to be passed to all callbacks.
+
+   This is generally a pointer to a struct which contains all necessary state.
+   Everything needed in callbacks should be here, not in static variables.
+
+   Note the lack of this facility makes GLUT unsuitable for plugins or
+   non-trivial programs; this mistake is largely why Pugl exists.
+*/
+void
+puglSetHandle(PuglWindow* window, PuglHandle handle);
+
+/**
+   Get the handle to be passed to all callbacks.
+*/
+PuglHandle
+puglGetHandle(PuglWindow* window);
+
+/**
+   Set the function to call when the window is closed.
+*/
+void
+puglSetCloseFunc(PuglWindow* window, PuglCloseFunc closeFunc);
+
+/**
+   Set the display function which should draw the UI using GL.
+*/
+void
+puglSetDisplayFunc(PuglWindow* window, PuglDisplayFunc displayFunc);
+
+/**
+   Set the function to call on keyboard events.
+*/
+void
+puglSetKeyboardFunc(PuglWindow* window, PuglKeyboardFunc keyboardFunc);
+
+/**
+   Set the function to call on mouse motion.
+*/
+void
+puglSetMotionFunc(PuglWindow* window, PuglMotionFunc motionFunc);
+
+/**
+   Set the function to call on mouse button events.
+*/
+void
+puglSetMouseFunc(PuglWindow* window, PuglMouseFunc mouseFunc);
+
+/**
+   Set the function to call when the window size changes.
+*/
+void
+puglSetReshapeFunc(PuglWindow* window, PuglReshapeFunc reshapeFunc);
+
+/**
+   Return the native window handle.
+*/
+PuglNativeWindow
+puglGetNativeWindow(PuglWindow* win);
+
+/**
+   Process all pending window events.
+
+   This handles input events as well as rendering, so it should be called
+   regularly and rapidly enough to keep the UI responsive.
+*/
+PuglStatus
+puglProcessEvents(PuglWindow* win);
+
+/**
+   Request a redisplay on the next call to puglProcessEvents().
+*/
+void
+puglPostRedisplay(PuglWindow* win);
+
+/**
+   Destroy a GL window.
+*/
+void
+puglDestroy(PuglWindow* win);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* PUGL_H_INCLUDED */