windows: Update the docs for env vars

We've replaced some env vars with a new one.
Update the docs to match.

docs/reference/gtk/windows.md

@@ -14,14 +14,19 @@ instructions, binary downloads, etc, can be found
 The Win32 GDK backend can be influenced with some additional environment
 variables.
 
-### GDK_IGNORE_WINTAB
+### GDK_WIN32_TABLET_INPUT_API
 
-If this variable is set, GTK doesn't use the Wintab API for tablet support.
+If this variable is set, it determines the API that GTK uses for tablet support.
+The possible values are:
 
-### GDK_USE_WINTAB
+`none`
+: Disables tablet support
 
-If this variable is set, GTK uses the Wintab API for tablet support.
-This is the default.
+`wintab`
+: Use the Wintab API
+
+`winpointer`
+: Use the Windows Pointer Input Stack API. This is the default.
 
 ## Windows-specific handling of cursors
 

gdk/win32/gdkdevice-winpointer.c

@@ -0,0 +1,188 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2020 the GTK team
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gdk/gdksurface.h>
+
+#include <windows.h>
+
+#include "gdkwin32.h"
+#include "gdkdevice-winpointer.h"
+#include "gdkdisplay-win32.h"
+
+G_DEFINE_TYPE (GdkDeviceWinpointer, gdk_device_winpointer, GDK_TYPE_DEVICE)
+
+static GdkModifierType
+get_keyboard_mask (void)
+{
+  GdkModifierType mask = 0;
+  BYTE kbd[256];
+
+  GetKeyboardState (kbd);
+  if (kbd[VK_SHIFT] & 0x80)
+    mask |= GDK_SHIFT_MASK;
+  if (kbd[VK_CAPITAL] & 0x80)
+    mask |= GDK_LOCK_MASK;
+  if (kbd[VK_CONTROL] & 0x80)
+    mask |= GDK_CONTROL_MASK;
+  if (kbd[VK_MENU] & 0x80)
+    mask |= GDK_ALT_MASK;
+
+  return mask;
+}
+
+static void
+gdk_device_winpointer_set_surface_cursor (GdkDevice *device,
+                                          GdkSurface *window,
+                                          GdkCursor *cursor)
+{
+}
+
+void
+gdk_device_winpointer_query_state (GdkDevice        *device,
+                                   GdkSurface       *window,
+                                   GdkSurface      **child_window,
+                                   double           *win_x,
+                                   double           *win_y,
+                                   GdkModifierType  *mask)
+{
+  GdkDeviceWinpointer *device_winpointer;
+  POINT point;
+  HWND hwnd, hwndc;
+  int scale;
+
+  device_winpointer = GDK_DEVICE_WINPOINTER (device);
+  if (window)
+    {
+      scale = GDK_WIN32_SURFACE (window)->surface_scale;
+      hwnd = GDK_SURFACE_HWND (window);
+    }
+  else
+    {
+      GdkDisplay *display = gdk_device_get_display (device);
+
+      scale = GDK_WIN32_DISPLAY (display)->surface_scale;
+      hwnd = NULL;
+    }
+
+  GetCursorPos (&point);
+
+  if (hwnd)
+    ScreenToClient (hwnd, &point);
+
+  if (win_x)
+    *win_x = point.x / scale;
+
+  if (win_y)
+    *win_y = point.y / scale;
+
+  if (!window)
+    {
+      if (win_x)
+        *win_x += _gdk_offset_x;
+
+      if (win_y)
+        *win_y += _gdk_offset_y;
+    }
+
+  if (hwnd && child_window)
+    {
+      hwndc = ChildWindowFromPoint (hwnd, point);
+
+      if (hwndc && hwndc != hwnd)
+        *child_window = gdk_win32_handle_table_lookup (hwndc);
+      else
+        *child_window = NULL; /* Direct child unknown to gdk */
+    }
+
+  if (mask)
+    {
+      *mask = get_keyboard_mask ();
+      *mask |= device_winpointer->last_button_mask;
+    }
+}
+
+static GdkGrabStatus
+gdk_device_winpointer_grab (GdkDevice    *device,
+                            GdkSurface    *window,
+                            gboolean      owner_events,
+                            GdkEventMask  event_mask,
+                            GdkSurface    *confine_to,
+                            GdkCursor    *cursor,
+                            guint32       time_)
+{
+  return GDK_GRAB_SUCCESS;
+}
+
+static void
+gdk_device_winpointer_ungrab (GdkDevice *device,
+                              guint32    time_)
+{
+}
+
+static GdkSurface *
+gdk_device_winpointer_surface_at_position (GdkDevice       *device,
+                                           double          *win_x,
+                                           double          *win_y,
+                                           GdkModifierType *mask)
+{
+  return NULL;
+}
+
+static void
+gdk_device_winpointer_init (GdkDeviceWinpointer *device_winpointer)
+{
+  device_winpointer->device_handle = NULL;
+  device_winpointer->start_cursor_id = 0;
+  device_winpointer->end_cursor_id = 0;
+
+  device_winpointer->origin_x = 0;
+  device_winpointer->origin_y = 0;
+  device_winpointer->scale_x = 0.0;
+  device_winpointer->scale_y = 0.0;
+
+  device_winpointer->last_axis_data = NULL;
+  device_winpointer->num_axes = 0;
+  device_winpointer->last_button_mask = 0;
+}
+
+static void
+gdk_device_winpointer_finalize (GObject *object)
+{
+  GdkDeviceWinpointer *device_winpointer = GDK_DEVICE_WINPOINTER (object);
+
+  g_clear_object (&device_winpointer->tool_pen);
+  g_clear_object (&device_winpointer->tool_eraser);
+
+  g_free (device_winpointer->last_axis_data);
+
+  G_OBJECT_CLASS (gdk_device_winpointer_parent_class)->finalize (object);
+}
+
+static void
+gdk_device_winpointer_class_init (GdkDeviceWinpointerClass *klass)
+{
+  GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gdk_device_winpointer_finalize;
+  device_class->set_surface_cursor = gdk_device_winpointer_set_surface_cursor;
+  device_class->grab = gdk_device_winpointer_grab;
+  device_class->ungrab = gdk_device_winpointer_ungrab;
+  device_class->surface_at_position = gdk_device_winpointer_surface_at_position;
+}

gdk/win32/gdkdevice-winpointer.h

@@ -0,0 +1,67 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2020 the GTK team
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_DEVICE_WINPOINTER_H__
+#define __GDK_DEVICE_WINPOINTER_H__
+
+#include <gdk/gdkdeviceprivate.h>
+
+#include <windows.h>
+
+G_BEGIN_DECLS
+
+#define GDK_TYPE_DEVICE_WINPOINTER         (gdk_device_winpointer_get_type ())
+#define GDK_DEVICE_WINPOINTER(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GDK_TYPE_DEVICE_WINPOINTER, GdkDeviceWinpointer))
+#define GDK_DEVICE_WINPOINTER_CLASS(c)     (G_TYPE_CHECK_CLASS_CAST ((c), GDK_TYPE_DEVICE_WINPOINTER, GdkDeviceWinpointerClass))
+#define GDK_IS_DEVICE_WINPOINTER(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GDK_TYPE_DEVICE_WINPOINTER))
+#define GDK_IS_DEVICE_WINPOINTER_CLASS(c)  (G_TYPE_CHECK_CLASS_TYPE ((c), GDK_TYPE_DEVICE_WINPOINTER))
+#define GDK_DEVICE_WINPOINTER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GDK_TYPE_DEVICE_WINPOINTER, GdkDeviceWinpointerClass))
+
+typedef struct _GdkDeviceWinpointer GdkDeviceWinpointer;
+typedef struct _GdkDeviceWinpointerClass GdkDeviceWinpointerClass;
+
+struct _GdkDeviceWinpointer
+{
+  GdkDevice parent_instance;
+
+  HANDLE device_handle;
+  UINT32 start_cursor_id;
+  UINT32 end_cursor_id;
+
+  int origin_x;
+  int origin_y;
+  double scale_x;
+  double scale_y;
+
+  double *last_axis_data;
+  unsigned num_axes;
+  GdkModifierType last_button_mask;
+
+  GdkDeviceTool *tool_pen;
+  GdkDeviceTool *tool_eraser;
+};
+
+struct _GdkDeviceWinpointerClass
+{
+  GdkDeviceClass parent_class;
+};
+
+GType gdk_device_winpointer_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GDK_DEVICE_WINPOINTER_H__ */

gdk/win32/gdkdevicemanager-win32.c

@@ -29,6 +29,7 @@
 #include "gdkdevice-win32.h"
 #include "gdkdevice-virtual.h"
 #include "gdkdevice-wintab.h"
+#include "gdkinput-winpointer.h"
 #include "gdkdisplayprivate.h"
 #include "gdkseatdefaultprivate.h"
 
@@ -371,9 +372,6 @@ wintab_init_check (GdkDeviceManagerWin32 *device_manager)
 
   wintab_contexts = NULL;
 
-  if (_gdk_input_ignore_wintab)
-    return;
-
   n = GetSystemDirectory (&dummy, 0);
 
   if (n <= 0)
@@ -688,6 +686,8 @@ gdk_device_manager_win32_constructed (GObject *object)
   GdkSeat *seat;
   GdkDisplayManager *display_manager = NULL;
   GdkDisplay *default_display = NULL;
+  const char *tablet_input_api_user_preference = NULL;
+  gboolean have_tablet_input_api_preference = FALSE;
 
   device_manager = GDK_DEVICE_MANAGER_WIN32 (object);
   device_manager->core_pointer =
@@ -728,18 +728,48 @@ gdk_device_manager_win32_constructed (GObject *object)
   gdk_seat_default_add_physical_device (GDK_SEAT_DEFAULT (seat), device_manager->system_keyboard);
   g_object_unref (seat);
 
-  /* Only call Wintab init stuff after the default display
-   * is globally known and accessible through the display manager
-   * singleton. Approach lifted from gtkmodules.c.
-   */
-  display_manager = gdk_display_manager_get ();
-  g_assert (display_manager != NULL);
-  default_display = gdk_display_manager_get_default_display (display_manager);
-  g_assert (default_display == NULL);
+  tablet_input_api_user_preference = g_getenv ("GDK_WIN32_TABLET_INPUT_API");
+  if (g_strcmp0 (tablet_input_api_user_preference, "none") == 0)
+    {
+      have_tablet_input_api_preference = TRUE;
+      _gdk_win32_tablet_input_api = GDK_WIN32_TABLET_INPUT_API_NONE;
+    }
+  else if (g_strcmp0 (tablet_input_api_user_preference, "wintab") == 0)
+    {
+      have_tablet_input_api_preference = TRUE;
+      _gdk_win32_tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINTAB;
+    }
+  else if (g_strcmp0 (tablet_input_api_user_preference, "winpointer") == 0)
+    {
+      have_tablet_input_api_preference = TRUE;
+      _gdk_win32_tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINPOINTER;
+    }
+  else
+    {
+      have_tablet_input_api_preference = FALSE;
+      _gdk_win32_tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINPOINTER;
+    }
 
-  g_signal_connect (display_manager, "notify::default-display",
-                    G_CALLBACK (wintab_default_display_notify_cb),
-                    NULL);
+  if (_gdk_win32_tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER)
+    {
+      if (!gdk_winpointer_initialize () && !have_tablet_input_api_preference)
+        _gdk_win32_tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINTAB;
+    }
+  if (_gdk_win32_tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINTAB)
+    {
+      /* Only call Wintab init stuff after the default display
+       * is globally known and accessible through the display manager
+       * singleton. Approach lifted from gtkmodules.c.
+       */
+      display_manager = gdk_display_manager_get ();
+      g_assert (display_manager != NULL);
+      default_display = gdk_display_manager_get_default_display (display_manager);
+      g_assert (default_display == NULL);
+
+      g_signal_connect (display_manager, "notify::default-display",
+                        G_CALLBACK (wintab_default_display_notify_cb),
+                        NULL);
+    }
 }
 
 static void
@@ -752,7 +782,7 @@ gdk_device_manager_win32_class_init (GdkDeviceManagerWin32Class *klass)
 }
 
 void
-_gdk_input_set_tablet_active (void)
+_gdk_wintab_set_tablet_active (void)
 {
   GList *tmp_list;
   HCTX *hctx;
@@ -763,7 +793,7 @@ _gdk_input_set_tablet_active (void)
   if (!wintab_contexts)
     return; /* No tablet devices found, or Wintab not initialized yet */
 
-  GDK_NOTE (INPUT, g_print ("_gdk_input_set_tablet_active: "
+  GDK_NOTE (INPUT, g_print ("_gdk_wintab_set_tablet_active: "
                             "Bringing Wintab contexts to the top of the overlap order\n"));
 
   tmp_list = wintab_contexts;
@@ -866,7 +896,7 @@ gdk_device_manager_find_wintab_device (GdkDeviceManagerWin32 *device_manager,
 }
 
 GdkEvent *
-gdk_input_other_event (GdkDisplay *display,
+gdk_wintab_make_event (GdkDisplay *display,
                        MSG        *msg,
                        GdkSurface  *window)
 {
@@ -894,7 +924,7 @@ gdk_input_other_event (GdkDisplay *display,
 
   if (window != wintab_window)
     {
-      g_warning ("gdk_input_other_event: not wintab_window?");
+      g_warning ("gdk_wintab_make_event: not wintab_window?");
       return NULL;
     }
 
@@ -905,7 +935,7 @@ gdk_input_other_event (GdkDisplay *display,
     g_object_ref (window);
 
   GDK_NOTE (EVENTS_OR_INPUT,
-	    g_print ("gdk_input_other_event: window=%p %+g%+g\n",
+	    g_print ("gdk_wintab_make_event: window=%p %+g%+g\n",
                window ? GDK_SURFACE_HWND (window) : NULL, x, y));
 
   if (msg->message == WT_PACKET || msg->message == WT_CSRCHANGE)

gdk/win32/gdkdevicemanager-win32.h

@@ -40,6 +40,8 @@ struct _GdkDeviceManagerWin32
   /* Fake physical devices */
   GdkDevice *system_pointer;
   GdkDevice *system_keyboard;
+
+  GList *winpointer_devices;
   GList *wintab_devices;
 
   /* Bumped up every time a wintab device enters the proximity
@@ -56,8 +58,8 @@ struct _GdkDeviceManagerWin32Class
 
 GType gdk_device_manager_win32_get_type (void) G_GNUC_CONST;
 
-void     _gdk_input_set_tablet_active (void);
-GdkEvent * gdk_input_other_event      (GdkDisplay *display,
+void     _gdk_wintab_set_tablet_active (void);
+GdkEvent * gdk_wintab_make_event      (GdkDisplay *display,
                                        MSG        *msg,
                                        GdkSurface  *window);
 

gdk/win32/gdkdisplay-win32.c

@@ -18,7 +18,6 @@
 
 #include "config.h"
 
-#define _WIN32_WINNT 0x0600
 #define VK_USE_PLATFORM_WIN32_KHR
 
 #include "gdk.h"

gdk/win32/gdkevents-win32.c

@@ -55,7 +55,9 @@
 #include "gdkdevicemanager-win32.h"
 #include "gdkdisplay-win32.h"
 #include "gdkdeviceprivate.h"
+#include "gdkdevice-virtual.h"
 #include "gdkdevice-wintab.h"
+#include "gdkinput-winpointer.h"
 #include "gdkwin32dnd.h"
 #include "gdkwin32dnd-private.h"
 #include "gdkdisplay-win32.h"
@@ -70,8 +72,9 @@
 #endif
 
 #include <objbase.h>
-
 #include <imm.h>
+#include <tchar.h>
+#include <tpcshrd.h>
 
 #define GDK_MOD2_MASK (1 << 4)
 
@@ -1035,11 +1038,12 @@ do_show_window (GdkSurface *window, gboolean hide_window)
 
 static void
 send_crossing_event (GdkDisplay                 *display,
-		     GdkSurface                  *window,
+                     GdkDevice                  *physical_device,
+		     GdkSurface                 *window,
 		     GdkEventType                type,
 		     GdkCrossingMode             mode,
 		     GdkNotifyType               notify_type,
-		     GdkSurface                  *subwindow,
+		     GdkSurface                 *subwindow,
 		     POINT                      *screen_pt,
 		     GdkModifierType             mask,
 		     guint32                     time_)
@@ -1066,16 +1070,18 @@ send_crossing_event (GdkDisplay                 *display,
   pt = *screen_pt;
   ScreenToClient (GDK_SURFACE_HWND (window), &pt);
 
+  _gdk_device_virtual_set_active (_gdk_device_manager->core_pointer, physical_device);
+
   event = gdk_crossing_event_new (type,
                                   window,
                                   device_manager->core_pointer,
-                                  _gdk_win32_get_next_tick (time_),
+                                  time_,
                                   mask,
                                   pt.x / impl->surface_scale,
                                   pt.y / impl->surface_scale,
                                   mode,
                                   notify_type);
-          
+
   _gdk_win32_append_event (event);
 }
 
@@ -1118,8 +1124,9 @@ find_common_ancestor (GdkSurface *win1,
 
 void
 synthesize_crossing_events (GdkDisplay                 *display,
-			    GdkSurface                  *src,
-			    GdkSurface                  *dest,
+                            GdkDevice                  *physical_device,
+			    GdkSurface                 *src,
+			    GdkSurface                 *dest,
 			    GdkCrossingMode             mode,
 			    POINT                      *screen_pt,
 			    GdkModifierType             mask,
@@ -1152,6 +1159,7 @@ synthesize_crossing_events (GdkDisplay                 *display,
       else
 	notify_type = GDK_NOTIFY_ANCESTOR;
       send_crossing_event (display,
+                           physical_device,
 			   a, GDK_LEAVE_NOTIFY,
 			   mode,
 			   notify_type,
@@ -1171,6 +1179,7 @@ synthesize_crossing_events (GdkDisplay                 *display,
 	  while (win != c && win != NULL)
 	    {
 	      send_crossing_event (display,
+                                   physical_device,
 				   win, GDK_LEAVE_NOTIFY,
 				   mode,
 				   notify_type,
@@ -1213,6 +1222,7 @@ synthesize_crossing_events (GdkDisplay                 *display,
 		next = b;
 
 	      send_crossing_event (display,
+                                   physical_device,
 				   win, GDK_ENTER_NOTIFY,
 				   mode,
 				   notify_type,
@@ -1232,6 +1242,7 @@ synthesize_crossing_events (GdkDisplay                 *display,
 	notify_type = GDK_NOTIFY_INFERIOR;
 
       send_crossing_event (display,
+                           physical_device,
 			   b, GDK_ENTER_NOTIFY,
 			   mode,
 			   notify_type,
@@ -1525,6 +1536,9 @@ generate_button_event (GdkEventType      type,
   current_x = (gint16) GET_X_LPARAM (msg->lParam) / impl->surface_scale;
   current_y = (gint16) GET_Y_LPARAM (msg->lParam) / impl->surface_scale;
 
+  _gdk_device_virtual_set_active (_gdk_device_manager->core_pointer,
+                                  _gdk_device_manager->system_pointer);
+
   event = gdk_button_event_new (type,
                                 window,
                                 device_manager->core_pointer,
@@ -2244,11 +2258,12 @@ gdk_event_translate (MSG *msg,
 		}
 
 	      synthesize_crossing_events (display,
+                                          _gdk_device_manager->system_pointer,
 					  implicit_grab_surface, new_window,
 					  GDK_CROSSING_UNGRAB,
 					  &msg->pt,
 					  0, /* TODO: Set right mask */
-					  msg->time,
+					  _gdk_win32_get_next_tick (msg->time),
 					  FALSE);
 	      g_set_object (&implicit_grab_surface, NULL);
 	      g_set_object (&mouse_window, new_window);
@@ -2308,11 +2323,12 @@ gdk_event_translate (MSG *msg,
 				     mouse_window ? GDK_SURFACE_HWND (mouse_window) : NULL,
 				     new_window ? GDK_SURFACE_HWND (new_window) : NULL));
 	  synthesize_crossing_events (display,
+                                      _gdk_device_manager->system_pointer,
 				      mouse_window, new_window,
 				      GDK_CROSSING_NORMAL,
 				      &msg->pt,
 				      0, /* TODO: Set right mask */
-				      msg->time,
+				      _gdk_win32_get_next_tick (msg->time),
 				      FALSE);
 	  g_set_object (&mouse_window, new_window);
 	  mouse_window_ignored_leave = NULL;
@@ -2350,6 +2366,9 @@ gdk_event_translate (MSG *msg,
 	  current_x = (gint16) GET_X_LPARAM (msg->lParam) / impl->surface_scale;
 	  current_y = (gint16) GET_Y_LPARAM (msg->lParam) / impl->surface_scale;
 
+          _gdk_device_virtual_set_active (_gdk_device_manager->core_pointer,
+                                          _gdk_device_manager->system_pointer);
+
 	  event = gdk_motion_event_new (window,
 	                                device_manager_win32->core_pointer,
                                         NULL,
@@ -2400,11 +2419,12 @@ gdk_event_translate (MSG *msg,
 
       if (!ignore_leave)
 	synthesize_crossing_events (display,
+                                    _gdk_device_manager->system_pointer,
 				    mouse_window, new_window,
 				    GDK_CROSSING_NORMAL,
 				    &msg->pt,
 				    0, /* TODO: Set right mask */
-				    msg->time,
+				    _gdk_win32_get_next_tick (msg->time),
 				    FALSE);
       g_set_object (&mouse_window, new_window);
       mouse_window_ignored_leave = ignore_leave ? new_window : NULL;
@@ -2954,6 +2974,13 @@ gdk_event_translate (MSG *msg,
       *ret_valp = 0;
       break;
 
+    case WM_DESTROY:
+      if (_gdk_win32_tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER)
+        gdk_winpointer_finalize_surface (window);
+
+      return_val = FALSE;
+      break;
+
     case WM_NCDESTROY:
       if ((pointer_grab != NULL && pointer_grab->surface == window) ||
           (keyboard_grab && keyboard_grab->surface == window))
@@ -3034,12 +3061,15 @@ gdk_event_translate (MSG *msg,
         {
           gdk_synthesize_surface_state (window, 0, GDK_TOPLEVEL_STATE_FOCUSED);
 
-          /* Bring any tablet contexts to the top of the overlap order when
-           * one of our windows is activated.
-           * NOTE: It doesn't seem to work well if it is done in WM_ACTIVATEAPP
-           * instead
-           */
-          _gdk_input_set_tablet_active ();
+          if (_gdk_win32_tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINTAB)
+            {
+              /* Bring any tablet contexts to the top of the overlap order when
+               * one of our windows is activated.
+               * NOTE: It doesn't seem to work well if it is done in WM_ACTIVATEAPP
+               * instead
+               */
+              _gdk_wintab_set_tablet_active ();
+           }
         }
 
       break;
@@ -3056,6 +3086,16 @@ gdk_event_translate (MSG *msg,
                                      GET_Y_LPARAM (msg->lParam), ret_valp);
       break;
 
+    case WM_TABLET_QUERYSYSTEMGESTURESTATUS:
+      *ret_valp = TABLET_DISABLE_PRESSANDHOLD |
+                  TABLET_DISABLE_PENTAPFEEDBACK |
+                  TABLET_DISABLE_PENBARRELFEEDBACK |
+                  TABLET_DISABLE_FLICKS |
+                  TABLET_DISABLE_FLICKFALLBACKKEYS;
+      return_val = TRUE;
+      break;
+
+
       /* Handle WINTAB events here, as we know that the device manager will
        * use the fixed WT_DEFBASE as lcMsgBase, and we thus can use the
        * constants as case labels.
@@ -3078,11 +3118,14 @@ gdk_event_translate (MSG *msg,
       /* Fall through */
     wintab:
 
-      event = gdk_input_other_event (display, msg, window);
-      if (event)
+      if (_gdk_win32_tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINTAB)
         {
-          _gdk_win32_append_event (event);
-	  gdk_event_unref (event);
+          event = gdk_wintab_make_event (display, msg, window);
+          if (event)
+            {
+              _gdk_win32_append_event (event);
+               gdk_event_unref (event);
+            }
         }
 
       break;

gdk/win32/gdkglobals-win32.c

@@ -37,14 +37,12 @@ HINSTANCE	  _gdk_dll_hinstance;
 HINSTANCE	  _gdk_app_hmodule;
 
 int		  _gdk_input_ignore_core;
+GdkWin32TabletInputAPI _gdk_win32_tablet_input_api;
 
 HKL		  _gdk_input_locale;
 gboolean	  _gdk_input_locale_is_ime = FALSE;
 UINT		  _gdk_input_codepage;
 
-int		  _gdk_input_ignore_wintab = FALSE;
-int		  _gdk_max_colors = 0;
-
 GdkWin32ModalOpKind	  _modal_operation_in_progress = GDK_WIN32_MODAL_OP_NONE;
 HWND              _modal_move_resize_window = NULL;
 

gdk/win32/gdkinput-winpointer.h

@@ -0,0 +1,41 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2021 the GTK team
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_INPUT_WINPOINTER_H__
+#define __GDK_INPUT_WINPOINTER_H__
+
+gboolean gdk_winpointer_initialize (void);
+
+void gdk_winpointer_initialize_surface (GdkSurface *surface);
+void gdk_winpointer_finalize_surface (GdkSurface *surface);
+
+typedef void
+(*crossing_cb_t)(GdkDevice *device,
+                 GdkWindow *window,
+                 POINT *screen_pt,
+                 guint32 time_);
+
+gboolean gdk_winpointer_should_forward_message (MSG *msg);
+void     gdk_winpointer_input_events (GdkWindow *window,
+                                      crossing_cb_t crossing_cb,
+                                      MSG *msg);
+gboolean gdk_winpointer_get_message_info (MSG *msg,
+                                          GdkDevice **device,
+                                          guint32 *time_);
+void     gdk_winpointer_interaction_ended (MSG *msg);
+
+#endif /* __GDK_INPUT_WINPOINTER_H__ */

gdk/win32/gdkmain-win32.c

@@ -54,11 +54,6 @@ _gdk_win32_surfaceing_init (void)
 {
   char buf[10];
 
-  if (getenv ("GDK_IGNORE_WINTAB") != NULL)
-    _gdk_input_ignore_wintab = TRUE;
-  else if (getenv ("GDK_USE_WINTAB") != NULL)
-    _gdk_input_ignore_wintab = FALSE;
-
   if (gdk_synchronize)
     GdiSetBatchLimit (1);
 

gdk/win32/gdkmonitor-win32.c

@@ -15,22 +15,6 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#if defined (_WIN32_WINNT) && WIN32_WINNT < 0x0601
-#  undef _WIN32_WINNT
-
-#  define _WIN32_WINNT 0x0601
-#  ifdef WINVER
-#    undef WINVER
-#  endif
-#  define WINVER _WIN32_WINNT
-#elif !defined (_WIN32_WINNT)
-#  define _WIN32_WINNT 0x0601
-#  ifdef WINVER
-#    undef WINVER
-#  endif
-#  define WINVER _WIN32_WINNT
-#endif
-
 #include "config.h"
 
 #include "gdkprivate-win32.h"

gdk/win32/gdkprivate-win32.h

@@ -25,15 +25,6 @@
 #ifndef __GDK_PRIVATE_WIN32_H__
 #define __GDK_PRIVATE_WIN32_H__
 
-#ifndef WINVER
-/* Vista or newer */
-#define WINVER 0x0600
-#endif
-
-#ifndef _WIN32_WINNT
-#define _WIN32_WINNT WINVER
-#endif
-
 #include <gdk/gdkcursorprivate.h>
 #include <gdk/win32/gdksurface-win32.h>
 #include <gdk/win32/gdkwin32display.h>
@@ -157,6 +148,12 @@ typedef enum
   GDK_DRAG_PROTO_LOCAL,
 } GdkDragProtocol;
 
+typedef enum {
+  GDK_WIN32_TABLET_INPUT_API_NONE = 0,
+  GDK_WIN32_TABLET_INPUT_API_WINTAB,
+  GDK_WIN32_TABLET_INPUT_API_WINPOINTER
+} GdkWin32TabletInputAPI;
+
 GType _gdk_gc_win32_get_type (void);
 
 gulong _gdk_win32_get_next_tick (gulong suggested_tick);
@@ -277,6 +274,7 @@ extern HINSTANCE         _gdk_dll_hinstance;
 extern HINSTANCE         _gdk_app_hmodule;
 
 extern int               _gdk_input_ignore_core;
+extern GdkWin32TabletInputAPI _gdk_win32_tablet_input_api;
 
 /* These are thread specific, but GDK/win32 works OK only when invoked
  * from a single thread anyway.
@@ -313,11 +311,6 @@ extern HWND             _modal_move_resize_window;
 void  _gdk_win32_begin_modal_call (GdkWin32ModalOpKind kind);
 void  _gdk_win32_end_modal_call (GdkWin32ModalOpKind kind);
 
-
-/* Options */
-extern gboolean          _gdk_input_ignore_wintab;
-extern int               _gdk_max_colors;
-
 /* Convert a pixbuf to an HICON (or HCURSOR).  Supports alpha under
  * Windows XP, thresholds alpha otherwise.
  */

gdk/win32/gdkscreen-win32.c

@@ -17,8 +17,6 @@
 
 #include "config.h"
 
-#define _WIN32_WINNT 0x0600
-
 #include "gdk.h"
 #include "gdkprivate-win32.h"
 #include "gdkwin32screen.h"

gdk/win32/gdksurface-win32.c

@@ -43,6 +43,7 @@
 #include "gdkmonitorprivate.h"
 #include "gdkwin32surface.h"
 #include "gdkwin32cursor.h"
+#include "gdkinput-winpointer.h"
 #include "gdkglcontext-win32.h"
 #include "gdkdisplay-win32.h"
 #include "gdkdevice-win32.h"
@@ -645,6 +646,9 @@ _gdk_win32_display_create_surface (GdkDisplay     *display,
       return NULL;
     }
 
+  if (_gdk_win32_tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER)
+    gdk_winpointer_initialize_surface (surface);
+
   _gdk_win32_surface_enable_transparency (surface);
   _gdk_win32_surface_register_dnd (surface);
 

gdk/win32/meson.build

@@ -6,6 +6,7 @@ gdk_win32_sources = files([
   'gdkdevicemanager-win32.c',
   'gdkdevice-virtual.c',
   'gdkdevice-win32.c',
+  'gdkdevice-winpointer.c',
   'gdkdevice-wintab.c',
   'gdkdisplay-win32.c',
   'gdkdisplaymanager-win32.c',
@@ -15,6 +16,7 @@ gdk_win32_sources = files([
   'gdkglcontext-win32.c',
   'gdkglobals-win32.c',
   'gdkhdataoutputstream-win32.c',
+  'gdkinput-winpointer.c',
   'gdkkeys-win32.c',
   'gdkwin32langnotification.c',
   'gdkmain-win32.c',
@@ -43,23 +45,31 @@ gdk_win32_public_headers = files([
 
 install_headers(gdk_win32_public_headers, 'gdkwin32.h', subdir: 'gtk-4.0/gdk/win32/')
 
-GDK_WIN32_EGL_CFLAGS = []
+gdk_win32_cflags = [
+  '-DGTK_COMPILATION',
+  '-DG_LOG_DOMAIN="Gdk"',
+  '-DINSIDE_GDK_WIN32',
+]
+
+gdk_win32_cflags += [
+  '-D_WIN32_WINNT=0x0602', # Windows 8
+  '-Isdkddkver.h',
+]
 
 if win32_has_egl
-  GDK_WIN32_EGL_CFLAGS = ['-DGDK_WIN32_ENABLE_EGL']
+  gdk_win32_cflags += [
+    '-DGDK_WIN32_ENABLE_EGL'
+  ]
 endif
 
-gdk_win32_deps = [ # FIXME
-  pangowin32_dep
+gdk_win32_deps = [
+  pangowin32_dep, # FIXME
+  cc.find_library('hid'),
 ]
 
 libgdk_win32 = static_library('gdk-win32',
   gdk_win32_sources, gdkconfig, gdkenum_h,
   include_directories: [ confinc, gdkinc ],
-  c_args: [
-    '-DGTK_COMPILATION',
-    '-DG_LOG_DOMAIN="Gdk"',
-    '-DINSIDE_GDK_WIN32',
-  ] + GDK_WIN32_EGL_CFLAGS,
+  c_args: gdk_win32_cflags,
   dependencies: [ gdk_deps, gdk_win32_deps ],
 )