gdkevents-win32.c

/* GDK - The GIMP Drawing Kit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 * Copyright (C) 1998-1999 Tor Lillqvist
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#include "config.h"

/* Cannot use TrackMouseEvent, as the stupid WM_MOUSELEAVE message
 * doesn't tell us where the mouse has gone. Thus we cannot use it to
 * generate a correct GdkNotifyType. Pity, as using TrackMouseEvent
 * otherwise would make it possible to reliably generate
 * GDK_LEAVE_NOTIFY events, which would help get rid of those pesky
 * tooltips sometimes popping up in the wrong place.
 */
/* define USE_TRACKMOUSEEVENT */

#include <stdio.h>

#include "gdkprivate-win32.h"

#include <objbase.h>
#include <imm.h>

#ifdef HAVE_DIMM_H
#include <dimm.h>
#else
#include "surrogate-dimm.h"
#endif

#include "gdk.h"
#include "gdkinternals.h"
#include "gdkinput-win32.h"

#include "gdkkeysyms.h"

#define PING() printf("%s: %d\n",__FILE__,__LINE__),fflush(stdout)

typedef struct _GdkIOClosure GdkIOClosure;
typedef struct _GdkEventPrivate GdkEventPrivate;

typedef enum
{
  /* Following flag is set for events on the event queue during
   * translation and cleared afterwards.
   */
  GDK_EVENT_PENDING = 1 << 0
} GdkEventFlags;

struct _GdkIOClosure
{
  GdkInputFunction function;
  GdkInputCondition condition;
  GdkDestroyNotify notify;
  gpointer data;
};

struct _GdkEventPrivate
{
  GdkEvent event;
  guint    flags;
};

/* 
 * Private function declarations
 */

static GdkFilterReturn
		 gdk_event_apply_filters(MSG      *msg,
					 GdkEvent *event,
					 GList    *filters);
static gboolean  gdk_event_translate	(GdkEvent *event, 
					 MSG      *msg,
					 gboolean *ret_val_flagp,
					 gint     *ret_valp);
static gboolean  gdk_event_prepare      (gpointer  source_data, 
				 	 GTimeVal *current_time,
					 gint     *timeout,
					 gpointer  user_data);
static gboolean  gdk_event_check        (gpointer  source_data,
				 	 GTimeVal *current_time,
					 gpointer  user_data);
static gboolean  gdk_event_dispatch     (gpointer  source_data,
					 GTimeVal *current_time,
					 gpointer  user_data);

/* Private variable declarations
 */

static GdkWindow *p_grab_window = NULL; /* Window that currently
					 * holds the pointer grab
					 */

static GdkWindow *k_grab_window = NULL; /* Window the holds the
					 * keyboard grab
					 */

static GList *client_filters;	/* Filters for client messages */

static gboolean p_grab_automatic;
static GdkEventMask p_grab_mask;
static gboolean p_grab_owner_events, k_grab_owner_events;
static HCURSOR p_grab_cursor;

static GSourceFuncs event_funcs = {
  gdk_event_prepare,
  gdk_event_check,
  gdk_event_dispatch,
  (GDestroyNotify)g_free
};

GPollFD event_poll_fd;

static GdkWindow *current_window = NULL;
static gint current_x, current_y;
static gdouble current_x_root, current_y_root;
static UINT gdk_ping_msg;
static gboolean ignore_wm_char = FALSE;
static gboolean is_altgr_key = FALSE;

static IActiveIMMApp *active_imm_app = NULL;
static IActiveIMMMessagePumpOwner *active_imm_msgpump_owner = NULL;

typedef BOOL (WINAPI *PFN_TrackMouseEvent) (LPTRACKMOUSEEVENT);
static PFN_TrackMouseEvent track_mouse_event = NULL;

static gboolean use_ime_composition = FALSE;

static LRESULT 
real_window_procedure (HWND   hwnd,
		       UINT   message,
		       WPARAM wparam,
		       LPARAM lparam)
{
  GdkEventPrivate event;
  GdkEvent *eventp;
  MSG msg;
  DWORD pos;
  LRESULT lres;
  gint ret_val;
  gboolean ret_val_flag;

  msg.hwnd = hwnd;
  msg.message = message;
  msg.wParam = wparam;
  msg.lParam = lparam;
  msg.time = GetTickCount ();
  pos = GetMessagePos ();
  msg.pt.x = LOWORD (pos);
  msg.pt.y = HIWORD (pos);

  event.flags = GDK_EVENT_PENDING;
  if (gdk_event_translate (&event.event, &msg, &ret_val_flag, &ret_val))
    {
      event.flags &= ~GDK_EVENT_PENDING;
#if 1
      if (event.event.any.type == GDK_CONFIGURE)
	{
	  /* Compress configure events */
	  GList *list = gdk_queued_events;

	  while (list != NULL
		 && (((GdkEvent *)list->data)->any.type != GDK_CONFIGURE
		     || ((GdkEvent *)list->data)->any.window != event.event.any.window))
	    list = list->next;
	  if (list != NULL)
	    {
	      GDK_NOTE (EVENTS, g_print ("... compressing an CONFIGURE event\n"));

	      *((GdkEvent *)list->data) = event.event;
	      gdk_drawable_unref (event.event.any.window);
	      /* Wake up WaitMessage */
	      PostMessage (NULL, gdk_ping_msg, 0, 0);
	      return FALSE;
	    }
	}
      else if (event.event.any.type == GDK_EXPOSE)
	{
	  /* Compress expose events */
	  GList *list = gdk_queued_events;

	  while (list != NULL
		 && (((GdkEvent *)list->data)->any.type != GDK_EXPOSE
		     || ((GdkEvent *)list->data)->any.window != event.event.any.window))
	    list = list->next;
	  if (list != NULL)
	    {
	      GdkRectangle u;

	      GDK_NOTE (EVENTS, g_print ("... compressing an EXPOSE event\n"));
	      gdk_rectangle_union (&event.event.expose.area,
				   &((GdkEvent *)list->data)->expose.area,
				   &u);
	      ((GdkEvent *)list->data)->expose.area = u;
	      gdk_drawable_unref (event.event.any.window);
#if 0
	      /* Wake up WaitMessage */
	      PostMessage (NULL, gdk_ping_msg, 0, 0);
#endif
	      return FALSE;
	    }
	}
#endif
      eventp = gdk_event_new ();
      *((GdkEventPrivate *) eventp) = event;

      /* Philippe Colantoni <colanton@aris.ss.uci.edu> suggests this
       * in order to handle events while opaque resizing neatly.  I
       * don't want it as default. Set the
       * GDK_EVENT_FUNC_FROM_WINDOW_PROC env var to get this
       * behaviour.
       */
      if (gdk_event_func_from_window_proc && gdk_event_func)
	{
	  GDK_THREADS_ENTER ();
	  
	  (*gdk_event_func) (eventp, gdk_event_data);
	  gdk_event_free (eventp);
	  
	  GDK_THREADS_LEAVE ();
	}
      else
	{
	  gdk_event_queue_append (eventp);
#if 1
	  /* Wake up WaitMessage */
	  PostMessage (NULL, gdk_ping_msg, 0, 0);
#endif
	}
      
      if (ret_val_flag)
	return ret_val;
      else
	return FALSE;
    }

  if (ret_val_flag)
    return ret_val;
  else
    {
      if (active_imm_app == NULL
	  || (*active_imm_app->lpVtbl->OnDefWindowProc) (active_imm_app, hwnd, message, wparam, lparam, &lres) == S_FALSE)
	return DefWindowProc (hwnd, message, wparam, lparam);
      else
	return lres;
    }
}

LRESULT CALLBACK
gdk_window_procedure (HWND   hwnd,
		      UINT   message,
		      WPARAM wparam,
		      LPARAM lparam)
{
  LRESULT retval;

  GDK_NOTE (EVENTS, g_print ("gdk_window_procedure: %#lx %s\n",
			     (gulong) hwnd, gdk_win32_message_name (message)));

  retval = real_window_procedure (hwnd, message, wparam, lparam);

  GDK_NOTE (EVENTS, g_print ("gdk_window_procedure: %#lx returns %ld\n",
			     (gulong) hwnd, retval));

  return retval;
}

void 
gdk_events_init (void)
{
  HRESULT hres;
#ifdef USE_TRACKMOUSEEVENT
  HMODULE user32, imm32;
  HINSTANCE commctrl32;
#endif

  gdk_ping_msg = RegisterWindowMessage ("gdk-ping");
  GDK_NOTE (EVENTS, g_print ("gdk-ping = %#.03x\n",
			     gdk_ping_msg));

  g_source_add (GDK_PRIORITY_EVENTS, TRUE, &event_funcs, NULL, NULL, NULL);

  event_poll_fd.fd = G_WIN32_MSG_HANDLE;
  event_poll_fd.events = G_IO_IN;
  
  g_main_add_poll (&event_poll_fd, GDK_PRIORITY_EVENTS);

  hres = CoCreateInstance (&CLSID_CActiveIMM,
			   NULL,
			   CLSCTX_ALL,
			   &IID_IActiveIMMApp,
			   (LPVOID *) &active_imm_app);
  
  if (hres == S_OK)
    {
      GDK_NOTE (EVENTS, g_print ("IActiveIMMApp created %p\n",
				 active_imm_app));
      (*active_imm_app->lpVtbl->Activate) (active_imm_app, TRUE);
      
      hres = (*active_imm_app->lpVtbl->QueryInterface) (active_imm_app, &IID_IActiveIMMMessagePumpOwner, &active_imm_msgpump_owner);
      GDK_NOTE (EVENTS, g_print ("IActiveIMMMessagePumpOwner created %p\n",
				 active_imm_msgpump_owner));
      (active_imm_msgpump_owner->lpVtbl->Start) (active_imm_msgpump_owner);
    }

#ifdef USE_TRACKMOUSEEVENT
  user32 = GetModuleHandle ("user32.dll");
  if ((track_mouse_event = GetProcAddress (user32, "TrackMouseEvent")) == NULL)
    {
      if ((commctrl32 = LoadLibrary ("commctrl32.dll")) != NULL)
	track_mouse_event = (PFN_TrackMouseEvent)
	  GetProcAddress (commctrl32, "_TrackMouseEvent");
    }
  if (track_mouse_event != NULL)
    GDK_NOTE (EVENTS, g_print ("Using TrackMouseEvent to detect leave events\n"));
#endif
  if (IS_WIN_NT () && (windows_version & 0xFF) == 5)
    {
      /* On Win2k (Beta 3, at least) WM_IME_CHAR doesn't seem to work
       * correctly for non-Unicode applications. Handle
       * WM_IME_COMPOSITION with GCS_RESULTSTR instead, fetch the
       * Unicode char from the IME with ImmGetCompositionStringW().
       */
      use_ime_composition = TRUE;
    }
}

/*
 *--------------------------------------------------------------
 * gdk_events_pending
 *
 *   Returns if events are pending on the queue.
 *
 * Arguments:
 *
 * Results:
 *   Returns TRUE if events are pending
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gboolean
gdk_events_pending (void)
{
  MSG msg;

  return (gdk_event_queue_find_first() ||
	  PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE));
}

/*
 *--------------------------------------------------------------
 * gdk_event_get_graphics_expose
 *
 *   Waits for a GraphicsExpose or NoExpose event
 *
 * Arguments:
 *
 * Results: 
 *   For GraphicsExpose events, returns a pointer to the event
 *   converted into a GdkEvent Otherwise, returns NULL.
 *
 * Side effects:
 *
 *-------------------------------------------------------------- */

GdkEvent*
gdk_event_get_graphics_expose (GdkWindow *window)
{
  MSG msg;
  GdkEvent *event;

  g_return_val_if_fail (window != NULL, NULL);
  
  GDK_NOTE (EVENTS, g_print ("gdk_event_get_graphics_expose\n"));

#if 0 /* ??? */
  /* Some nasty bugs here, just return NULL for now. */
  return NULL;
#else
  if (PeekMessage (&msg, GDK_WINDOW_HWND (window), WM_PAINT, WM_PAINT, PM_REMOVE))
    {
      event = gdk_event_new ();
      
      if (gdk_event_translate (event, &msg, NULL, NULL))
	return event;
      else
	gdk_event_free (event);
    }
  
  return NULL;	
#endif
}

static char *
event_mask_string (GdkEventMask mask)
{
  static char bfr[500];
  char *p = bfr;

  *p = '\0';
#define BIT(x) \
  if (mask & GDK_##x##_MASK) \
    p += sprintf (p, "%s" #x, (p > bfr ? " " : ""))
  BIT(EXPOSURE);
  BIT(POINTER_MOTION);
  BIT(POINTER_MOTION_HINT);
  BIT(BUTTON_MOTION);
  BIT(BUTTON1_MOTION);
  BIT(BUTTON2_MOTION);
  BIT(BUTTON3_MOTION);
  BIT(BUTTON_PRESS);
  BIT(BUTTON_RELEASE);
  BIT(KEY_PRESS);
  BIT(KEY_RELEASE);
  BIT(ENTER_NOTIFY);
  BIT(LEAVE_NOTIFY);
  BIT(FOCUS_CHANGE);
  BIT(STRUCTURE);
  BIT(PROPERTY_CHANGE);
  BIT(VISIBILITY_NOTIFY);
  BIT(PROXIMITY_IN);
  BIT(PROXIMITY_OUT);
  BIT(SUBSTRUCTURE);
  BIT(SCROLL);
#undef BIT

  return bfr;
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_grab
 *
 *   Grabs the pointer to a specific window
 *
 * Arguments:
 *   "window" is the window which will receive the grab
 *   "owner_events" specifies whether events will be reported as is,
 *     or relative to "window"
 *   "event_mask" masks only interesting events
 *   "confine_to" limits the cursor movement to the specified window
 *   "cursor" changes the cursor for the duration of the grab
 *   "time" specifies the time
 *
 * Results:
 *
 * Side effects:
 *   requires a corresponding call to gdk_pointer_ungrab
 *
 *--------------------------------------------------------------
 */

GdkGrabStatus
gdk_pointer_grab (GdkWindow    *window,
		  gboolean	owner_events,
		  GdkEventMask	event_mask,
		  GdkWindow    *confine_to,
		  GdkCursor    *cursor,
		  guint32	time)
{
  HWND hwnd_confined_to;
  HCURSOR hcursor;
  GdkCursorPrivate *cursor_private;
  gint return_val;

  g_return_val_if_fail (window != NULL, 0);
  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
  g_return_val_if_fail (confine_to == NULL || GDK_IS_WINDOW (confine_to), 0);
  
  cursor_private = (GdkCursorPrivate*) cursor;
  
  if (!confine_to || GDK_WINDOW_DESTROYED (confine_to))
    hwnd_confined_to = NULL;
  else
    hwnd_confined_to = GDK_WINDOW_HWND (confine_to);
  
  if (!cursor)
    hcursor = NULL;
  else
    hcursor = cursor_private->hcursor;
  
  return_val = _gdk_input_grab_pointer (window,
					owner_events,
					event_mask,
					confine_to,
					time);

  if (return_val == GDK_GRAB_SUCCESS)
    {
      if (!GDK_WINDOW_DESTROYED (window))
	{
	  GDK_NOTE (EVENTS, g_print ("gdk_pointer_grab: %#lx %s %#lx %s\n",
				     (gulong) GDK_WINDOW_HWND (window),
				     (owner_events ? "TRUE" : "FALSE"),
				     (gulong) hcursor,
				     event_mask_string (event_mask)));
	  p_grab_mask = event_mask;
	  p_grab_owner_events = (owner_events != 0);
	  p_grab_automatic = FALSE;
	  
#if 1 /* Menus don't work if we use mouse capture. Pity, because many other
       * things work better with mouse capture.
       */
	  SetCapture (GDK_WINDOW_HWND (window));
#endif
	  return_val = GDK_GRAB_SUCCESS;
	}
      else
	return_val = GDK_GRAB_ALREADY_GRABBED;
    }
  
  if (return_val == GDK_GRAB_SUCCESS)
    {
      p_grab_window = window;
      p_grab_cursor = hcursor;
    }
  
  return return_val;
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_ungrab
 *
 *   Releases any pointer grab
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_pointer_ungrab (guint32 time)
{
  GDK_NOTE (EVENTS, g_print ("gdk_pointer_ungrab\n"));

  _gdk_input_ungrab_pointer (time);
  
#if 1
  if (GetCapture () != NULL)
    ReleaseCapture ();
#endif

  p_grab_window = NULL;
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_is_grabbed
 *
 *   Tell wether there is an active x pointer grab in effect
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gboolean
gdk_pointer_is_grabbed (void)
{
  return p_grab_window != NULL;
}

/*
 *--------------------------------------------------------------
 * gdk_keyboard_grab
 *
 *   Grabs the keyboard to a specific window
 *
 * Arguments:
 *   "window" is the window which will receive the grab
 *   "owner_events" specifies whether events will be reported as is,
 *     or relative to "window"
 *   "time" specifies the time
 *
 * Results:
 *
 * Side effects:
 *   requires a corresponding call to gdk_keyboard_ungrab
 *
 *--------------------------------------------------------------
 */

GdkGrabStatus
gdk_keyboard_grab (GdkWindow *window,
		   gboolean   owner_events,
		   guint32    time)
{
  gint return_val;
  
  g_return_val_if_fail (window != NULL, 0);
  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
  
  GDK_NOTE (EVENTS, g_print ("gdk_keyboard_grab %#lx\n",
			     (gulong) GDK_WINDOW_HWND (window)));

  if (!GDK_WINDOW_DESTROYED (window))
    {
      k_grab_owner_events = owner_events != 0;
      return_val = GDK_GRAB_SUCCESS;
    }
  else
    return_val = GDK_GRAB_ALREADY_GRABBED;

  if (return_val == GDK_GRAB_SUCCESS)
    k_grab_window = window;
  
  return return_val;
}

/*
 *--------------------------------------------------------------
 * gdk_keyboard_ungrab
 *
 *   Releases any keyboard grab
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_keyboard_ungrab (guint32 time)
{
  GDK_NOTE (EVENTS, g_print ("gdk_keyboard_ungrab\n"));

  k_grab_window = NULL;
}

static GdkFilterReturn
gdk_event_apply_filters (MSG      *msg,
			 GdkEvent *event,
			 GList    *filters)
{
  GdkEventFilter *filter;
  GList *tmp_list;
  GdkFilterReturn result;
  
  tmp_list = filters;
  
  while (tmp_list)
    {
      filter = (GdkEventFilter *) tmp_list->data;
      
      result = (*filter->function) (msg, event, filter->data);
      if (result !=  GDK_FILTER_CONTINUE)
	return result;
      
      tmp_list = tmp_list->next;
    }
  
  return GDK_FILTER_CONTINUE;
}

void 
gdk_add_client_message_filter (GdkAtom       message_type,
			       GdkFilterFunc func,
			       gpointer      data)
{
  GdkClientFilter *filter = g_new (GdkClientFilter, 1);

  filter->type = message_type;
  filter->function = func;
  filter->data = data;
  
  client_filters = g_list_prepend (client_filters, filter);
}

/* Thanks to Markus G. Kuhn <mkuhn@acm.org> for the ksysym<->Unicode
 * mapping functions, from the xterm sources.
 */

static void
build_key_event_state (GdkEvent *event)
{
  if (GetKeyState (VK_SHIFT) < 0)
    event->key.state |= GDK_SHIFT_MASK;
  if (GetKeyState (VK_CAPITAL) & 0x1)
    event->key.state |= GDK_LOCK_MASK;
  if (!is_altgr_key)
    {
      if (GetKeyState (VK_CONTROL) < 0)
	{
	  event->key.state |= GDK_CONTROL_MASK;
#if 0
	  if (event->key.keyval < ' ')
	    event->key.keyval += '@';
#endif
	}
#if 0
      else if (event->key.keyval < ' ')
	{
	  event->key.state |= GDK_CONTROL_MASK;
	  event->key.keyval += '@';
	}
#endif
      if (GetKeyState (VK_MENU) < 0)
	event->key.state |= GDK_MOD1_MASK;
    }
}

static gint
build_pointer_event_state (MSG *msg)
{
  gint state;
  
  state = 0;
  if (msg->wParam & MK_CONTROL)
    state |= GDK_CONTROL_MASK;
  if (msg->wParam & MK_LBUTTON)
    state |= GDK_BUTTON1_MASK;
  if (msg->wParam & MK_MBUTTON)
    state |= GDK_BUTTON2_MASK;
  if (msg->wParam & MK_RBUTTON)
    state |= GDK_BUTTON3_MASK;
  if (msg->wParam & MK_SHIFT)
    state |= GDK_SHIFT_MASK;
  if (GetKeyState (VK_MENU) < 0)
    state |= GDK_MOD1_MASK;
  if (GetKeyState (VK_CAPITAL) & 0x1)
    state |= GDK_LOCK_MASK;

  return state;
}

static void
build_keypress_event (GdkWindowImplWin32 *impl,
		      GdkEvent           *event,
		      MSG                *msg)
{
  HIMC himc;
  gint i, bytecount, ucount, ucleft, len;
  guchar buf[100], *bp;
  wchar_t wbuf[100], *wcp;

  event->key.type = GDK_KEY_PRESS;
  event->key.time = msg->time;
  event->key.state = 0;
  
  if (msg->message == WM_IME_COMPOSITION)
    {
      himc = ImmGetContext (msg->hwnd);

      bytecount = ImmGetCompositionStringW (himc, GCS_RESULTSTR,
					    wbuf, sizeof (wbuf));
      ucount = bytecount / 2;
    }
  else
    {
      if (msg->message == WM_CHAR || msg->message == WM_SYSCHAR)
	{
	  bytecount = MIN ((msg->lParam & 0xFFFF), sizeof (buf));
	  for (i = 0; i < bytecount; i++)
	    buf[i] = msg->wParam;
	}
      else /* WM_IME_CHAR */
	{
	  event->key.keyval = GDK_VoidSymbol;
	  if (msg->wParam & 0xFF00)
	    {
	      /* Contrary to some versions of the documentation,
	       * the lead byte is the most significant byte.
	       */
	      buf[0] = ((msg->wParam >> 8) & 0xFF);
	      buf[1] = (msg->wParam & 0xFF);
	      bytecount = 2;
	    }
	  else
	    {
	      buf[0] = (msg->wParam & 0xFF);
	      bytecount = 1;
	    }
	}

      /* Convert from the window's current code page
       * to Unicode. Then convert to UTF-8.
       * We don't handle the surrogate stuff. Should we?
       */
      ucount = MultiByteToWideChar (impl->charset_info.ciACP,
				    0, buf, bytecount,
				    wbuf, sizeof (wbuf) / sizeof (wbuf[0]));
      
    }
  if (ucount == 0)
    event->key.keyval = GDK_VoidSymbol;
  else if (msg->message == WM_CHAR || msg->message == WM_SYSCHAR)
    {
      if (msg->wParam < ' ')
	{
	  event->key.keyval = msg->wParam + '@';
	  /* This is needed in case of Alt+nnn or Alt+0nnn (on the numpad)
	   * where nnn<32
	   */
	  event->key.state |= GDK_CONTROL_MASK;
	}
      else
	event->key.keyval = gdk_unicode_to_keyval (wbuf[0]);
    }

  build_key_event_state (event);

  /* Build UTF-8 string */
  ucleft = ucount;
  len = 0;
  wcp = wbuf;
  while (ucleft-- > 0)
    {
      wchar_t c = *wcp++;

      if (c < 0x80)
	len += 1;
      else if (c < 0x800)
	len += 2;
      else
	len += 3;
    }

  event->key.string = g_malloc (len + 1);
  event->key.length = len;
  
  ucleft = ucount;
  wcp = wbuf;
  bp = event->key.string;
  while (ucleft-- > 0)
    {
      int first;
      wchar_t c = *wcp++;

      if (c < 0x80)
	{
	  first = 0;
	  len = 1;
	}
      else if (c < 0x800)
	{
	  first = 0xc0;
	  len = 2;
	}
      else
	{
	  first = 0xe0;
	  len = 3;
	}

#if 1      
      /* Woo-hoo! */
      switch (len)
	{
	case 3: bp[2] = (c & 0x3f) | 0x80; c >>= 6; /* Fall through */
	case 2: bp[1] = (c & 0x3f) | 0x80; c >>= 6; /* Fall through */
	case 1: bp[0] = c | first;
	}
#else
      for (i = len - 1; i > 0; --i)
	{
	  bp[i] = (c & 0x3f) | 0x80;
	  c >>= 6;
	}
      bp[0] = c | first;
#endif

      bp += len;
    }
  *bp = 0;
}

static void
build_keyrelease_event (GdkWindowImplWin32 *impl,
			GdkEvent           *event,
			MSG                *msg)
{
  guchar buf;
  wchar_t wbuf;

  event->key.type = GDK_KEY_RELEASE;
  event->key.time = msg->time;
  event->key.state = 0;

  if (msg->message == WM_CHAR || msg->message == WM_SYSCHAR)
    if (msg->wParam < ' ')
      event->key.keyval = msg->wParam + '@';
    else
      {
	buf = msg->wParam;
	MultiByteToWideChar (impl->charset_info.ciACP,
			     0, &buf, 1, &wbuf, 1);

	event->key.keyval = gdk_unicode_to_keyval (wbuf);
      }
  else
    event->key.keyval = GDK_VoidSymbol;
  build_key_event_state (event);
  event->key.string = NULL;
  event->key.length = 0;
}

static void
print_event_state (gint state)
{
  if (state & GDK_SHIFT_MASK)
    g_print ("SHIFT ");
  if (state & GDK_LOCK_MASK)
    g_print ("LOCK ");
  if (state & GDK_CONTROL_MASK)
    g_print ("CONTROL ");
  if (state & GDK_MOD1_MASK)
    g_print ("MOD1 ");
  if (state & GDK_BUTTON1_MASK)
    g_print ("BUTTON1 ");
  if (state & GDK_BUTTON2_MASK)
    g_print ("BUTTON2 ");
  if (state & GDK_BUTTON3_MASK)
    g_print ("BUTTON3 ");
}

static void
print_event (GdkEvent *event)
{
  gchar *escaped, *kvname;

  switch (event->any.type)
    {
    case GDK_NOTHING: g_print ("GDK_NOTHING "); break;
    case GDK_DELETE: g_print ("GDK_DELETE "); break;
    case GDK_DESTROY: g_print ("GDK_DESTROY "); break;
    case GDK_EXPOSE: g_print ("GDK_EXPOSE "); break;
    case GDK_MOTION_NOTIFY: g_print ("GDK_MOTION_NOTIFY "); break;
    case GDK_BUTTON_PRESS: g_print ("GDK_BUTTON_PRESS "); break;
    case GDK_2BUTTON_PRESS: g_print ("GDK_2BUTTON_PRESS "); break;
    case GDK_3BUTTON_PRESS: g_print ("GDK_3BUTTON_PRESS "); break;
    case GDK_BUTTON_RELEASE: g_print ("GDK_BUTTON_RELEASE "); break;
    case GDK_KEY_PRESS: g_print ("GDK_KEY_PRESS "); break;
    case GDK_KEY_RELEASE: g_print ("GDK_KEY_RELEASE "); break;
    case GDK_ENTER_NOTIFY: g_print ("GDK_ENTER_NOTIFY "); break;
    case GDK_LEAVE_NOTIFY: g_print ("GDK_LEAVE_NOTIFY "); break;
    case GDK_FOCUS_CHANGE: g_print ("GDK_FOCUS_CHANGE "); break;
    case GDK_CONFIGURE: g_print ("GDK_CONFIGURE "); break;
    case GDK_MAP: g_print ("GDK_MAP "); break;
    case GDK_UNMAP: g_print ("GDK_UNMAP "); break;
    case GDK_PROPERTY_NOTIFY: g_print ("GDK_PROPERTY_NOTIFY "); break;
    case GDK_SELECTION_CLEAR: g_print ("GDK_SELECTION_CLEAR "); break;
    case GDK_SELECTION_REQUEST: g_print ("GDK_SELECTION_REQUEST "); break;
    case GDK_SELECTION_NOTIFY: g_print ("GDK_SELECTION_NOTIFY "); break;
    case GDK_PROXIMITY_IN: g_print ("GDK_PROXIMITY_IN "); break;
    case GDK_PROXIMITY_OUT: g_print ("GDK_PROXIMITY_OUT "); break;
    case GDK_DRAG_ENTER: g_print ("GDK_DRAG_ENTER "); break;
    case GDK_DRAG_LEAVE: g_print ("GDK_DRAG_LEAVE "); break;
    case GDK_DRAG_MOTION: g_print ("GDK_DRAG_MOTION "); break;
    case GDK_DRAG_STATUS: g_print ("GDK_DRAG_STATUS "); break;
    case GDK_DROP_START: g_print ("GDK_DROP_START "); break;
    case GDK_DROP_FINISHED: g_print ("GDK_DROP_FINISHED "); break;
    case GDK_CLIENT_EVENT: g_print ("GDK_CLIENT_EVENT "); break;
    case GDK_VISIBILITY_NOTIFY: g_print ("GDK_VISIBILITY_NOTIFY "); break;
    case GDK_NO_EXPOSE: g_print ("GDK_NO_EXPOSE "); break;
    case GDK_SCROLL: g_print ("GDK_SCROLL "); break;
    }
  g_print ("%#lx ", (gulong) GDK_WINDOW_HWND (event->any.window));

  switch (event->any.type)
    {
    case GDK_EXPOSE:
      g_print ("%dx%d@+%d+%d %d",
	       event->expose.area.width,
	       event->expose.area.height,
	       event->expose.area.x,
	       event->expose.area.y,
	       event->expose.count);
      break;
    case GDK_MOTION_NOTIFY:
      g_print ("(%.4g,%.4g) %s",
	       event->motion.x, event->motion.y,
	       event->motion.is_hint ? "HINT " : "");
      print_event_state (event->motion.state);
      break;
    case GDK_BUTTON_PRESS:
    case GDK_2BUTTON_PRESS:
    case GDK_3BUTTON_PRESS:
    case GDK_BUTTON_RELEASE:
      g_print ("%d (%.4g,%.4g) ",
	       event->button.button,
	       event->button.x, event->button.y);
      print_event_state (event->button.state);
      break;
    case GDK_KEY_PRESS: 
    case GDK_KEY_RELEASE:
      if (event->key.length == 0)
	escaped = g_strdup ("");
      else
	escaped = g_strescape (event->key.string, NULL);
      kvname = gdk_keyval_name (event->key.keyval);
      g_print ("%s %d:\"%s\" ",
	       (kvname ? kvname : "??"),
	       event->key.length,
	       escaped);
      g_free (escaped);
      print_event_state (event->key.state);
      break;
    case GDK_ENTER_NOTIFY:
    case GDK_LEAVE_NOTIFY:
      g_print ("%s ",
	       (event->crossing.detail == GDK_NOTIFY_INFERIOR ? "INFERIOR" :
		(event->crossing.detail == GDK_NOTIFY_ANCESTOR ? "ANCESTOR" :
		 (event->crossing.detail == GDK_NOTIFY_NONLINEAR ? "NONLINEAR" :
		  "???"))));
      break;
    case GDK_SCROLL:
      g_print ("%s ",
	       (event->scroll.direction == GDK_SCROLL_UP ? "UP" :
		(event->scroll.direction == GDK_SCROLL_DOWN ? "DOWN" :
		 (event->scroll.direction == GDK_SCROLL_LEFT ? "LEFT" :
		  (event->scroll.direction == GDK_SCROLL_RIGHT ? "RIGHT" :
		   "???")))));
      print_event_state (event->scroll.state);
      break;
    default:
      /* Nothing */
      break;
    }  
  g_print ("\n");
}

static void
synthesize_crossing_events (GdkWindow *window,
			    MSG       *msg)
{
  GdkEvent *event;
  
  /* If we are not using TrackMouseEvent, generate a leave notify
   * event if necessary
   */
  if (track_mouse_event == NULL
      && current_window
      && (GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (current_window)->impl)->event_mask & GDK_LEAVE_NOTIFY_MASK))
    {
      GDK_NOTE (EVENTS, g_print ("synthesizing LEAVE_NOTIFY event\n"));

      event = gdk_event_new ();
      event->crossing.type = GDK_LEAVE_NOTIFY;
      event->crossing.window = current_window;
      gdk_drawable_ref (event->crossing.window);
      event->crossing.subwindow = NULL;
      event->crossing.time = msg->time;
      event->crossing.x = current_x;
      event->crossing.y = current_y;
      event->crossing.x_root = current_x_root;
      event->crossing.y_root = current_y_root;
      event->crossing.mode = GDK_CROSSING_NORMAL;
      if (IsChild (GDK_WINDOW_HWND (current_window), GDK_WINDOW_HWND (window)))
	event->crossing.detail = GDK_NOTIFY_INFERIOR;
      else if (IsChild (GDK_WINDOW_HWND (window), GDK_WINDOW_HWND (current_window)))
	event->crossing.detail = GDK_NOTIFY_ANCESTOR;
      else
	event->crossing.detail = GDK_NOTIFY_NONLINEAR;

      event->crossing.focus = TRUE; /* ??? */
      event->crossing.state = 0; /* ??? */

      gdk_event_queue_append (event);
      GDK_NOTE (EVENTS, print_event (event));
    }

  if (GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl)->event_mask & GDK_ENTER_NOTIFY_MASK)
    {
      GDK_NOTE (EVENTS, g_print ("synthesizing ENTER_NOTIFY event\n"));
      
      event = gdk_event_new ();
      event->crossing.type = GDK_ENTER_NOTIFY;
      event->crossing.window = window;
      gdk_drawable_ref (event->crossing.window);
      event->crossing.subwindow = NULL;
      event->crossing.time = msg->time;
      event->crossing.x = LOWORD (msg->lParam);
      event->crossing.y = HIWORD (msg->lParam);
      event->crossing.x_root = (gfloat) msg->pt.x;
      event->crossing.y_root = (gfloat) msg->pt.y;
      event->crossing.mode = GDK_CROSSING_NORMAL;
      if (current_window
	  && IsChild (GDK_WINDOW_HWND (current_window), GDK_WINDOW_HWND (window)))
	event->crossing.detail = GDK_NOTIFY_ANCESTOR;
      else if (current_window
	       && IsChild (GDK_WINDOW_HWND (window), GDK_WINDOW_HWND (current_window)))
	event->crossing.detail = GDK_NOTIFY_INFERIOR;
      else
	event->crossing.detail = GDK_NOTIFY_NONLINEAR;
      
      event->crossing.focus = TRUE; /* ??? */
      event->crossing.state = 0; /* ??? */
      
      gdk_event_queue_append (event);

      GDK_NOTE (EVENTS, print_event (event));

      if (GDK_WINDOW_OBJECT (window)->extension_events != 0)
	_gdk_input_enter_event (&event->crossing, window);
    }
  
  if (current_window)
    gdk_drawable_unref (current_window);
  current_window = window;
  gdk_drawable_ref (current_window);
#ifdef USE_TRACKMOUSEEVENT
  if (track_mouse_event != NULL)
    {
      TRACKMOUSEEVENT tme;

      tme.cbSize = sizeof (TRACKMOUSEEVENT);
      tme.dwFlags = TME_LEAVE;
      tme.hwndTrack = GDK_WINDOW_HWND (current_window);
      tme.dwHoverTime = HOVER_DEFAULT;
      
      (*track_mouse_event) (&tme);
    }
#endif
}

static void
translate_mouse_coords (GdkWindow *window1,
			GdkWindow *window2,
			MSG       *msg)
{
  POINT pt;

  pt.x = LOWORD (msg->lParam);
  pt.y = HIWORD (msg->lParam);
  ClientToScreen (GDK_WINDOW_HWND (window1), &pt);
  ScreenToClient (GDK_WINDOW_HWND (window2), &pt);
  msg->lParam = MAKELPARAM (pt.x, pt.y);
  GDK_NOTE (EVENTS, g_print ("...new coords are (%ld,%ld)\n", pt.x, pt.y));
}

static gboolean
propagate (GdkWindow  **window,
	   MSG         *msg,
	   GdkWindow   *grab_window,
	   gboolean     grab_owner_events,
	   gint	        grab_mask,
	   gboolean   (*doesnt_want_it) (gint mask,
					 MSG *msg))
{
  if (grab_window != NULL && !grab_owner_events)
    {
      /* Event source is grabbed with owner_events FALSE */
      GDK_NOTE (EVENTS, g_print ("...grabbed, owner_events FALSE, "));
      if ((*doesnt_want_it) (grab_mask, msg))
	{
	  GDK_NOTE (EVENTS, g_print ("...grabber doesn't want it\n"));
	  return FALSE;
	}
      else
	{
	  GDK_NOTE (EVENTS, g_print ("...sending to grabber %#lx\n",
				     (gulong) GDK_WINDOW_HWND (grab_window)));
	  gdk_drawable_unref (*window);
	  *window = grab_window;
	  gdk_drawable_ref (*window);
	  return TRUE;
	}
    }
  while (TRUE)
    {
     if ((*doesnt_want_it) (GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (*window)->impl)->event_mask, msg))
	{
	  /* Owner doesn't want it, propagate to parent. */
	  if (GDK_WINDOW (GDK_WINDOW_OBJECT (window)->parent) == gdk_parent_root)
	    {
	      /* No parent; check if grabbed */
	      if (grab_window != NULL)
		{
		  /* Event source is grabbed with owner_events TRUE */
		  GDK_NOTE (EVENTS, g_print ("...undelivered, but grabbed\n"));
		  if ((*doesnt_want_it) (grab_mask, msg))
		    {
		      /* Grabber doesn't want it either */
		      GDK_NOTE (EVENTS, g_print ("...grabber doesn't want it\n"));
		      return FALSE;
		    }
		  else
		    {
		      /* Grabbed! */
		      GDK_NOTE (EVENTS,
				g_print ("...sending to grabber %#lx\n",
					 (gulong) GDK_WINDOW_HWND (grab_window)));
		      gdk_drawable_unref (*window);
		      *window = grab_window;
		      gdk_drawable_ref (*window);
		      return TRUE;
		    }
		}
	      else
		{
		  GDK_NOTE (EVENTS, g_print ("...undelivered\n"));
		  return FALSE;
		}
	    }
	  else
	    {
	      gdk_drawable_unref (*window);
	      *window = GDK_WINDOW (GDK_WINDOW_OBJECT (*window)->parent);
	      gdk_drawable_ref (*window);
	      GDK_NOTE (EVENTS, g_print ("...propagating to %#lx\n",
					 (gulong) GDK_WINDOW_HWND (*window)));
	      /* The only branch where we actually continue the loop */
	    }
	}
      else
	return TRUE;
    }
}

static gboolean
doesnt_want_key (gint mask,
		 MSG *msg)
{
  return (((msg->message == WM_KEYUP || msg->message == WM_SYSKEYUP)
	   && !(mask & GDK_KEY_RELEASE_MASK))
	  ||
	  ((msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
	   && !(mask & GDK_KEY_PRESS_MASK)));
}

static gboolean
doesnt_want_char (gint mask,
		  MSG *msg)
{
  return !(mask & (GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK));
}

static gboolean
doesnt_want_button_press (gint mask,
			  MSG *msg)
{
  return !(mask & GDK_BUTTON_PRESS_MASK);
}

static gboolean
doesnt_want_button_release (gint mask,
			    MSG *msg)
{
  return !(mask & GDK_BUTTON_RELEASE_MASK);
}

static gboolean
doesnt_want_button_motion (gint mask,
			   MSG *msg)
{
  return !((mask & GDK_POINTER_MOTION_MASK)
	   || ((msg->wParam & (MK_LBUTTON|MK_MBUTTON|MK_RBUTTON))
	       && (mask & GDK_BUTTON_MOTION_MASK))
	   || ((msg->wParam & MK_LBUTTON)
	       && (mask & GDK_BUTTON1_MOTION_MASK))
	   || ((msg->wParam & MK_MBUTTON)
	       && (mask & GDK_BUTTON2_MOTION_MASK))
	   || ((msg->wParam & MK_RBUTTON)
	       && (mask & GDK_BUTTON3_MOTION_MASK)));
}

static gboolean
doesnt_want_scroll (gint mask,
		    MSG *msg)
{
#if 0
  return !(mask & GDK_SCROLL_MASK);
#else
  return !(mask & GDK_BUTTON_PRESS_MASK);
#endif
}

static char *
decode_key_lparam (LPARAM lParam)
{
  static char buf[100];
  char *p = buf;

  if (HIWORD (lParam) & KF_UP)
    p += sprintf (p, "KF_UP ");
  if (HIWORD (lParam) & KF_REPEAT)
    p += sprintf (p, "KF_REPEAT ");
  if (HIWORD (lParam) & KF_ALTDOWN)
    p += sprintf (p, "KF_ALTDOWN ");
  if (HIWORD (lParam) & KF_EXTENDED)
    p += sprintf (p, "KF_EXTENDED ");
  p += sprintf (p, "sc%d rep%d", LOBYTE (HIWORD (lParam)), LOWORD (lParam));

  return buf;
}

static gboolean
gdk_event_translate (GdkEvent *event,
		     MSG      *msg,
		     gboolean *ret_val_flagp,
		     gint     *ret_valp)
{
  DWORD pidActWin;
  DWORD pidThis;
  PAINTSTRUCT paintstruct;
  HDC hdc;
  HDC bgdc;
  HGDIOBJ oldbitmap;
  HBRUSH hbr;
  COLORREF bg;
  RECT rect;
  POINT pt;
  MINMAXINFO *mmi;
  HWND hwnd;
  HCURSOR hcursor;

  /* Invariant:
   * window_impl == GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl)
   */
  GdkWindow *window;
  GdkWindowImplWin32 *window_impl;
#define ASSIGN_WINDOW(rhs)						   \
  (window = rhs,							   \
   window_impl = (window ? GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl) : NULL))

  GdkWindow *orig_window, *new_window;
  GdkColormapPrivateWin32 *colormap_private;
  GdkPixmap *pixmap;
  GdkPixmapImplWin32 *pixmap_impl;

  int button;
  int i, j;

  gchar buf[256];
  gboolean return_val;
  
  return_val = FALSE;
  
  if (ret_val_flagp)
    *ret_val_flagp = FALSE;

  ASSIGN_WINDOW (gdk_win32_handle_table_lookup ((GdkNativeWindow) msg->hwnd));
  orig_window = window;
  
  event->any.window = window;
  event->any.send_event = FALSE;

  if (window == NULL)
    {
      /* Handle WM_QUIT here ? */
      if (msg->message == WM_QUIT)
	{
	  GDK_NOTE (EVENTS, g_print ("WM_QUIT: %d\n", msg->wParam));
	  exit (msg->wParam);
	}
      else if (msg->message == WM_MOVE
	       || msg->message == WM_SIZE)
	{
	  /* It's quite normal to get these messages before we have
	   * had time to register the window in our lookup table, or
	   * when the window is being destroyed and we already have
	   * removed it. Repost the same message to our queue so that
	   * we will get it later when we are prepared.
	   */
	  GDK_NOTE(MISC, g_print("gdk_event_translate: %#lx %s posted.\n",
				 (gulong) msg->hwnd, 
				 msg->message == WM_MOVE ?
				 "WM_MOVE" : "WM_SIZE"));
	
	  PostMessage (msg->hwnd, msg->message,
		       msg->wParam, msg->lParam);
	}
      return FALSE;
    }
  
  gdk_drawable_ref (window);

  if (!GDK_WINDOW_DESTROYED (window))
    {
      /* Check for filters for this window */
      GdkFilterReturn result;

      result = gdk_event_apply_filters
	(msg, event, GDK_WINDOW_OBJECT (window)->filters);
      
      if (result != GDK_FILTER_CONTINUE)
	{
	  return_val =  (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
	  goto done;
	}
    }

  if (msg->message == gdk_selection_notify_msg)
    {
      GDK_NOTE (EVENTS, g_print ("gdk_selection_notify_msg: %#lx\n",
				 (gulong) msg->hwnd));

      event->selection.type = GDK_SELECTION_NOTIFY;
      event->selection.window = window;
      event->selection