w32fns.c 350 KB
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/* Graphical user interface functions for the Microsoft Windows API.
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Copyright (C) 1989, 1992-2020 Free Software Foundation, Inc.
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This file is part of GNU Emacs.

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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
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GNU Emacs 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 General Public License for more details.

You should have received a copy of the GNU General Public License
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along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
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/* Added by Kevin Gallo */

#include <config.h>
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/* Override API version to get the latest functionality.  */
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0600
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#include <signal.h>
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#include <stdio.h>
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#include <limits.h>
#include <errno.h>
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#include <math.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <c-ctype.h>

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#include "lisp.h"
#include "w32term.h"
#include "frame.h"
#include "window.h"
#include "buffer.h"
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#include "keyboard.h"
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#include "blockinput.h"
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#include "coding.h"
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#include "w32common.h"
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#include "w32inevt.h"
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#ifdef WINDOWSNT
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#include <mbstring.h>
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#include <mbctype.h>	/* for _getmbcp */
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#endif /* WINDOWSNT */
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#if CYGWIN
#include "cygw32.h"
#else
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#include "w32.h"
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#endif
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#include "pdumper.h"

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#include <basetyps.h>
#include <unknwn.h>
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#include <commctrl.h>
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#include <commdlg.h>
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#include <shellapi.h>
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#include <shlwapi.h>
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#include <ctype.h>
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#include <winspool.h>
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#include <objbase.h>
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#include <dlgs.h>
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#include <imm.h>
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#include <windowsx.h>
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#ifndef FOF_NO_CONNECTED_ELEMENTS
#define FOF_NO_CONNECTED_ELEMENTS 0x2000
#endif

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extern int w32_console_toggle_lock_key (int, Lisp_Object);
extern void w32_menu_display_help (HWND, HMENU, UINT, UINT);
extern void w32_free_menu_strings (HWND);
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#ifndef IDC_HAND
#define IDC_HAND MAKEINTRESOURCE(32649)
#endif

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/* Prefix for system colors.  */
#define SYSTEM_COLOR_PREFIX "System"
#define SYSTEM_COLOR_PREFIX_LEN (sizeof (SYSTEM_COLOR_PREFIX) - 1)

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/* State variables for emulating a three button mouse. */
#define LMOUSE 1
#define MMOUSE 2
#define RMOUSE 4

static int button_state = 0;
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static W32Msg saved_mouse_button_msg;
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static unsigned mouse_button_timer = 0;	/* non-zero when timer is active */
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static W32Msg saved_mouse_move_msg;
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static unsigned mouse_move_timer = 0;
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/* Window that is tracking the mouse.  */
static HWND track_mouse_window;
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/* Multi-monitor API definitions that are not pulled from the headers
   since we are compiling for NT 4.  */
#ifndef MONITOR_DEFAULT_TO_NEAREST
#define MONITOR_DEFAULT_TO_NEAREST 2
#endif
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#ifndef MONITORINFOF_PRIMARY
#define MONITORINFOF_PRIMARY 1
#endif
#ifndef SM_XVIRTUALSCREEN
#define SM_XVIRTUALSCREEN 76
#endif
#ifndef SM_YVIRTUALSCREEN
#define SM_YVIRTUALSCREEN 77
#endif
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/* MinGW headers define MONITORINFO unconditionally, but MSVC ones don't.
   To avoid a compile error on one or the other, redefine with a new name.  */
struct MONITOR_INFO
{
    DWORD   cbSize;
    RECT    rcMonitor;
    RECT    rcWork;
    DWORD   dwFlags;
};

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#if _WIN32_WINDOWS >= 0x0410
#define C_CHILDREN_TITLEBAR CCHILDREN_TITLEBAR
typedef TITLEBARINFO TITLEBAR_INFO;
#else
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#define C_CHILDREN_TITLEBAR 5
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typedef struct
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{
  DWORD cbSize;
  RECT  rcTitleBar;
  DWORD rgstate[C_CHILDREN_TITLEBAR+1];
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} TITLEBAR_INFO, *PTITLEBAR_INFO;
#endif
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#ifndef CCHDEVICENAME
#define CCHDEVICENAME 32
#endif
struct MONITOR_INFO_EX
{
    DWORD   cbSize;
    RECT    rcMonitor;
    RECT    rcWork;
    DWORD   dwFlags;
    char    szDevice[CCHDEVICENAME];
};

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/* Reportedly, MSVC does not have this in its headers.  */
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#if defined (_MSC_VER) && _WIN32_WINNT < 0x0500
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DECLARE_HANDLE(HMONITOR);
#endif

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typedef BOOL (WINAPI * TrackMouseEvent_Proc)
  (IN OUT LPTRACKMOUSEEVENT lpEventTrack);
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typedef LONG (WINAPI * ImmGetCompositionString_Proc)
  (IN HIMC context, IN DWORD index, OUT LPVOID buffer, IN DWORD bufLen);
typedef HIMC (WINAPI * ImmGetContext_Proc) (IN HWND window);
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typedef BOOL (WINAPI * ImmReleaseContext_Proc) (IN HWND wnd, IN HIMC context);
typedef BOOL (WINAPI * ImmSetCompositionWindow_Proc) (IN HIMC context,
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						      IN COMPOSITIONFORM *form);
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/* For toggling IME status.  */
typedef BOOL (WINAPI * ImmGetOpenStatus_Proc) (IN HIMC);
typedef BOOL (WINAPI * ImmSetOpenStatus_Proc) (IN HIMC, IN BOOL);

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typedef HMONITOR (WINAPI * MonitorFromPoint_Proc) (IN POINT pt, IN DWORD flags);
typedef BOOL (WINAPI * GetMonitorInfo_Proc)
  (IN HMONITOR monitor, OUT struct MONITOR_INFO* info);
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typedef HMONITOR (WINAPI * MonitorFromWindow_Proc)
  (IN HWND hwnd, IN DWORD dwFlags);
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typedef BOOL CALLBACK (* MonitorEnum_Proc)
  (IN HMONITOR monitor, IN HDC hdc, IN RECT *rcMonitor, IN LPARAM dwData);
typedef BOOL (WINAPI * EnumDisplayMonitors_Proc)
  (IN HDC hdc, IN RECT *rcClip, IN MonitorEnum_Proc fnEnum, IN LPARAM dwData);
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typedef BOOL (WINAPI * GetTitleBarInfo_Proc)
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  (IN HWND hwnd, OUT TITLEBAR_INFO* info);
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typedef BOOL (WINAPI *IsDebuggerPresent_Proc) (void);
typedef HRESULT (WINAPI *SetThreadDescription_Proc)
  (HANDLE hThread, PCWSTR lpThreadDescription);

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TrackMouseEvent_Proc track_mouse_event_fn = NULL;
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ImmGetCompositionString_Proc get_composition_string_fn = NULL;
ImmGetContext_Proc get_ime_context_fn = NULL;
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ImmGetOpenStatus_Proc get_ime_open_status_fn = NULL;
ImmSetOpenStatus_Proc set_ime_open_status_fn = NULL;
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ImmReleaseContext_Proc release_ime_context_fn = NULL;
ImmSetCompositionWindow_Proc set_ime_composition_window_fn = NULL;
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MonitorFromPoint_Proc monitor_from_point_fn = NULL;
GetMonitorInfo_Proc get_monitor_info_fn = NULL;
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MonitorFromWindow_Proc monitor_from_window_fn = NULL;
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EnumDisplayMonitors_Proc enum_display_monitors_fn = NULL;
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GetTitleBarInfo_Proc get_title_bar_info_fn = NULL;
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IsDebuggerPresent_Proc is_debugger_present = NULL;
SetThreadDescription_Proc set_thread_description = NULL;
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extern AppendMenuW_Proc unicode_append_menu;
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/* Flag to selectively ignore WM_IME_CHAR messages.  */
static int ignore_ime_char = 0;

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/* W95 mousewheel handler */
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unsigned int msh_mousewheel = 0;
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/* Timers */
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#define MOUSE_BUTTON_ID	1
#define MOUSE_MOVE_ID	2
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#define MENU_FREE_ID 3
/* The delay (milliseconds) before a menu is freed after WM_EXITMENULOOP
   is received.  */
#define MENU_FREE_DELAY 1000
static unsigned menu_free_timer = 0;
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#ifdef GLYPH_DEBUG
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static ptrdiff_t image_cache_refcount;
static int dpyinfo_refcount;
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#endif

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static HWND w32_visible_system_caret_hwnd;
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static int w32_unicode_gui;

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/* From w32menu.c  */
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int menubar_in_use = 0;
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/* From w32uniscribe.c  */
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extern void syms_of_w32uniscribe (void);
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extern int uniscribe_available;
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extern int harfbuzz_available;
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#ifdef WINDOWSNT
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/* From w32inevt.c */
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extern int faked_key;
#endif /* WINDOWSNT */

/* This gives us the page size and the size of the allocation unit on NT.  */
SYSTEM_INFO sysinfo_cache;

/* This gives us version, build, and platform identification.  */
OSVERSIONINFO osinfo_cache;

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DWORD_PTR syspage_mask = 0;
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/* The major and minor versions of NT.  */
int w32_major_version;
int w32_minor_version;
int w32_build_number;

/* Distinguish between Windows NT and Windows 95.  */
int os_subtype;

#ifdef HAVE_NTGUI
HINSTANCE hinst = NULL;
#endif

static unsigned int sound_type = 0xFFFFFFFF;
#define MB_EMACS_SILENT (0xFFFFFFFF - 1)
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/* Special virtual key code for indicating "any" key.  */
#define VK_ANY 0xFF

#ifndef WM_WTSSESSION_CHANGE
/* 32-bit MinGW does not define these constants.  */
# define WM_WTSSESSION_CHANGE  0x02B1
# define WTS_SESSION_LOCK      0x7
#endif

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#ifndef WS_EX_NOACTIVATE
#define WS_EX_NOACTIVATE 0x08000000L
#endif

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/* Keyboard hook state data.  */
static struct
{
  int hook_count; /* counter, if several windows are created */
  HHOOK hook;     /* hook handle */
  HWND console;   /* console window handle */

  int lwindown;      /* Left Windows key currently pressed (and hooked) */
  int rwindown;      /* Right Windows key currently pressed (and hooked) */
  int winsdown;      /* Number of handled keys currently pressed */
  int send_win_up;   /* Pass through the keyup for this Windows key press? */
  int suppress_lone; /* Suppress simulated Windows keydown-keyup for this press? */
  int winseen;       /* Windows keys seen during this press? */

  char alt_hooked[256];  /* hook Alt+[this key]? */
  char lwin_hooked[256]; /* hook left Win+[this key]? */
  char rwin_hooked[256]; /* hook right Win+[this key]? */
} kbdhook;
typedef HWND (WINAPI *GetConsoleWindow_Proc) (void);

/* stdin, from w32console.c */
extern HANDLE keyboard_handle;

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static struct w32_display_info *w32_display_info_for_name (Lisp_Object);

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/* Let the user specify a display with a frame.
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   nil stands for the selected frame--or, if that is not a w32 frame,
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   the first display on the list.  */

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struct w32_display_info *
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check_x_display_info (Lisp_Object object)
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{
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  if (NILP (object))
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    {
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      struct frame *sf = XFRAME (selected_frame);
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      if (FRAME_W32_P (sf) && FRAME_LIVE_P (sf))
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	return FRAME_DISPLAY_INFO (sf);
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      else
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	return &one_w32_display_info;
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    }
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  else if (TERMINALP (object))
    {
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      struct terminal *t = decode_live_terminal (object);
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      if (t->type != output_w32)
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	error ("Terminal %d is not a W32 display", t->id);
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      return t->display_info.w32;
    }
  else if (STRINGP (object))
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    return w32_display_info_for_name (object);
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  else
    {
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      struct frame *f;
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      CHECK_LIVE_FRAME (object);
      f = XFRAME (object);
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      if (! FRAME_W32_P (f))
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	error ("Non-W32 frame used");
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      return FRAME_DISPLAY_INFO (f);
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    }
}

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/* Return the Emacs frame-object corresponding to an w32 window.
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   It could be the frame's main window or an icon window.  */

struct frame *
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w32_window_to_frame (struct w32_display_info *dpyinfo, HWND wdesc)
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{
  Lisp_Object tail, frame;
  struct frame *f;

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  FOR_EACH_FRAME (tail, frame)
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    {
      f = XFRAME (frame);
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      if (!FRAME_W32_P (f) || FRAME_DISPLAY_INFO (f) != dpyinfo)
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	continue;
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      if (FRAME_W32_WINDOW (f) == wdesc)
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	return f;
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    }
  return 0;
}


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static Lisp_Object unwind_create_frame (Lisp_Object);
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static void unwind_create_tip_frame (Lisp_Object);
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static void my_create_window (struct frame *);
static void my_create_tip_window (struct frame *);
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/* TODO: Native Input Method support; see x_create_im.  */
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static void w32_set_foreground_color (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_background_color (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_mouse_color (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_border_color (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_cursor_color (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_cursor_type (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_icon_type (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_icon_name (struct frame *, Lisp_Object, Lisp_Object);
static void w32_explicitly_set_name (struct frame *, Lisp_Object, Lisp_Object);
static void w32_set_title (struct frame *, Lisp_Object, Lisp_Object);
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/* Store the screen positions of frame F into XPTR and YPTR.
   These are the positions of the containing window manager window,
   not Emacs's own window.  */

void
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w32_real_positions (struct frame *f, int *xptr, int *yptr)
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{
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  RECT rect;
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  /* Get the bounds of the WM window.  */
  GetWindowRect (FRAME_W32_WINDOW (f), &rect);
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  if (FRAME_PARENT_FRAME (f))
    {
      /* For a child window we have to get its coordinates wrt its
	 parent.  */
      HWND parent_hwnd = FRAME_W32_WINDOW (FRAME_PARENT_FRAME (f));
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      if (parent_hwnd)
	MapWindowPoints (HWND_DESKTOP, parent_hwnd, (LPPOINT) &rect, 2);
    }
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  *xptr = rect.left;
  *yptr = rect.top;
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}

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/* Returns the window rectangle appropriate for the given fullscreen mode.
   The normal rect parameter was the window's rectangle prior to entering
   fullscreen mode.  If multiple monitor support is available, the nearest
   monitor to the window is chosen.  */

void
w32_fullscreen_rect (HWND hwnd, int fsmode, RECT normal, RECT *rect)
{
  struct MONITOR_INFO mi = { sizeof(mi) };
  if (monitor_from_window_fn && get_monitor_info_fn)
    {
      HMONITOR monitor =
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	monitor_from_window_fn (hwnd, MONITOR_DEFAULT_TO_NEAREST);
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      get_monitor_info_fn (monitor, &mi);
    }
  else
    {
      mi.rcMonitor.left = 0;
      mi.rcMonitor.top = 0;
      mi.rcMonitor.right = GetSystemMetrics (SM_CXSCREEN);
      mi.rcMonitor.bottom = GetSystemMetrics (SM_CYSCREEN);
      mi.rcWork.left = 0;
      mi.rcWork.top = 0;
      mi.rcWork.right = GetSystemMetrics (SM_CXMAXIMIZED);
      mi.rcWork.bottom = GetSystemMetrics (SM_CYMAXIMIZED);
    }

  switch (fsmode)
    {
    case FULLSCREEN_BOTH:
      rect->left = mi.rcMonitor.left;
      rect->top = mi.rcMonitor.top;
      rect->right = mi.rcMonitor.right;
      rect->bottom = mi.rcMonitor.bottom;
      break;
    case FULLSCREEN_WIDTH:
      rect->left = mi.rcWork.left;
      rect->top = normal.top;
      rect->right = mi.rcWork.right;
      rect->bottom = normal.bottom;
      break;
    case FULLSCREEN_HEIGHT:
      rect->left = normal.left;
      rect->top = mi.rcWork.top;
      rect->right = normal.right;
      rect->bottom = mi.rcWork.bottom;
      break;
    default:
      *rect = normal;
      break;
    }
}

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DEFUN ("w32-define-rgb-color", Fw32_define_rgb_color,
       Sw32_define_rgb_color, 4, 4, 0,
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       doc: /* Convert RGB numbers to a Windows color reference and associate with NAME.
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This adds or updates a named color to `w32-color-map', making it
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available for use.  The original entry's RGB ref is returned, or nil
if the entry is new.  */)
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  (Lisp_Object red, Lisp_Object green, Lisp_Object blue, Lisp_Object name)
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{
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  Lisp_Object rgb;
  Lisp_Object oldrgb = Qnil;
  Lisp_Object entry;

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  CHECK_FIXNUM (red);
  CHECK_FIXNUM (green);
  CHECK_FIXNUM (blue);
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  CHECK_STRING (name);
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  XSETINT (rgb, RGB (XUFIXNUM (red), XUFIXNUM (green), XUFIXNUM (blue)));
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  block_input ();
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  /* replace existing entry in w32-color-map or add new entry. */
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  entry = Fassoc (name, Vw32_color_map, Qnil);
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  if (NILP (entry))
    {
      entry = Fcons (name, rgb);
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      Vw32_color_map = Fcons (entry, Vw32_color_map);
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    }
  else
    {
      oldrgb = Fcdr (entry);
      Fsetcdr (entry, rgb);
    }

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  unblock_input ();
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  return (oldrgb);
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}

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/* The default colors for the w32 color map */
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typedef struct colormap_t
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{
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  const char *name;
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  COLORREF colorref;
} colormap_t;

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colormap_t w32_color_map[] =
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{
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  {"snow"                      , PALETTERGB (255,250,250)},
  {"ghost white"               , PALETTERGB (248,248,255)},
  {"GhostWhite"                , PALETTERGB (248,248,255)},
  {"white smoke"               , PALETTERGB (245,245,245)},
  {"WhiteSmoke"                , PALETTERGB (245,245,245)},
  {"gainsboro"                 , PALETTERGB (220,220,220)},
  {"floral white"              , PALETTERGB (255,250,240)},
  {"FloralWhite"               , PALETTERGB (255,250,240)},
  {"old lace"                  , PALETTERGB (253,245,230)},
  {"OldLace"                   , PALETTERGB (253,245,230)},
  {"linen"                     , PALETTERGB (250,240,230)},
  {"antique white"             , PALETTERGB (250,235,215)},
  {"AntiqueWhite"              , PALETTERGB (250,235,215)},
  {"papaya whip"               , PALETTERGB (255,239,213)},
  {"PapayaWhip"                , PALETTERGB (255,239,213)},
  {"blanched almond"           , PALETTERGB (255,235,205)},
  {"BlanchedAlmond"            , PALETTERGB (255,235,205)},
  {"bisque"                    , PALETTERGB (255,228,196)},
  {"peach puff"                , PALETTERGB (255,218,185)},
  {"PeachPuff"                 , PALETTERGB (255,218,185)},
  {"navajo white"              , PALETTERGB (255,222,173)},
  {"NavajoWhite"               , PALETTERGB (255,222,173)},
  {"moccasin"                  , PALETTERGB (255,228,181)},
  {"cornsilk"                  , PALETTERGB (255,248,220)},
  {"ivory"                     , PALETTERGB (255,255,240)},
  {"lemon chiffon"             , PALETTERGB (255,250,205)},
  {"LemonChiffon"              , PALETTERGB (255,250,205)},
  {"seashell"                  , PALETTERGB (255,245,238)},
  {"honeydew"                  , PALETTERGB (240,255,240)},
  {"mint cream"                , PALETTERGB (245,255,250)},
  {"MintCream"                 , PALETTERGB (245,255,250)},
  {"azure"                     , PALETTERGB (240,255,255)},
  {"alice blue"                , PALETTERGB (240,248,255)},
  {"AliceBlue"                 , PALETTERGB (240,248,255)},
  {"lavender"                  , PALETTERGB (230,230,250)},
  {"lavender blush"            , PALETTERGB (255,240,245)},
  {"LavenderBlush"             , PALETTERGB (255,240,245)},
  {"misty rose"                , PALETTERGB (255,228,225)},
  {"MistyRose"                 , PALETTERGB (255,228,225)},
  {"white"                     , PALETTERGB (255,255,255)},
  {"black"                     , PALETTERGB (  0,  0,  0)},
  {"dark slate gray"           , PALETTERGB ( 47, 79, 79)},
  {"DarkSlateGray"             , PALETTERGB ( 47, 79, 79)},
  {"dark slate grey"           , PALETTERGB ( 47, 79, 79)},
  {"DarkSlateGrey"             , PALETTERGB ( 47, 79, 79)},
  {"dim gray"                  , PALETTERGB (105,105,105)},
  {"DimGray"                   , PALETTERGB (105,105,105)},
  {"dim grey"                  , PALETTERGB (105,105,105)},
  {"DimGrey"                   , PALETTERGB (105,105,105)},
  {"slate gray"                , PALETTERGB (112,128,144)},
  {"SlateGray"                 , PALETTERGB (112,128,144)},
  {"slate grey"                , PALETTERGB (112,128,144)},
  {"SlateGrey"                 , PALETTERGB (112,128,144)},
  {"light slate gray"          , PALETTERGB (119,136,153)},
  {"LightSlateGray"            , PALETTERGB (119,136,153)},
  {"light slate grey"          , PALETTERGB (119,136,153)},
  {"LightSlateGrey"            , PALETTERGB (119,136,153)},
  {"gray"                      , PALETTERGB (190,190,190)},
  {"grey"                      , PALETTERGB (190,190,190)},
  {"light grey"                , PALETTERGB (211,211,211)},
  {"LightGrey"                 , PALETTERGB (211,211,211)},
  {"light gray"                , PALETTERGB (211,211,211)},
  {"LightGray"                 , PALETTERGB (211,211,211)},
  {"midnight blue"             , PALETTERGB ( 25, 25,112)},
  {"MidnightBlue"              , PALETTERGB ( 25, 25,112)},
  {"navy"                      , PALETTERGB (  0,  0,128)},
  {"navy blue"                 , PALETTERGB (  0,  0,128)},
  {"NavyBlue"                  , PALETTERGB (  0,  0,128)},
  {"cornflower blue"           , PALETTERGB (100,149,237)},
  {"CornflowerBlue"            , PALETTERGB (100,149,237)},
  {"dark slate blue"           , PALETTERGB ( 72, 61,139)},
  {"DarkSlateBlue"             , PALETTERGB ( 72, 61,139)},
  {"slate blue"                , PALETTERGB (106, 90,205)},
  {"SlateBlue"                 , PALETTERGB (106, 90,205)},
  {"medium slate blue"         , PALETTERGB (123,104,238)},
  {"MediumSlateBlue"           , PALETTERGB (123,104,238)},
  {"light slate blue"          , PALETTERGB (132,112,255)},
  {"LightSlateBlue"            , PALETTERGB (132,112,255)},
  {"medium blue"               , PALETTERGB (  0,  0,205)},
  {"MediumBlue"                , PALETTERGB (  0,  0,205)},
  {"royal blue"                , PALETTERGB ( 65,105,225)},
  {"RoyalBlue"                 , PALETTERGB ( 65,105,225)},
  {"blue"                      , PALETTERGB (  0,  0,255)},
  {"dodger blue"               , PALETTERGB ( 30,144,255)},
  {"DodgerBlue"                , PALETTERGB ( 30,144,255)},
  {"deep sky blue"             , PALETTERGB (  0,191,255)},
  {"DeepSkyBlue"               , PALETTERGB (  0,191,255)},
  {"sky blue"                  , PALETTERGB (135,206,235)},
  {"SkyBlue"                   , PALETTERGB (135,206,235)},
  {"light sky blue"            , PALETTERGB (135,206,250)},
  {"LightSkyBlue"              , PALETTERGB (135,206,250)},
  {"steel blue"                , PALETTERGB ( 70,130,180)},
  {"SteelBlue"                 , PALETTERGB ( 70,130,180)},
  {"light steel blue"          , PALETTERGB (176,196,222)},
  {"LightSteelBlue"            , PALETTERGB (176,196,222)},
  {"light blue"                , PALETTERGB (173,216,230)},
  {"LightBlue"                 , PALETTERGB (173,216,230)},
  {"powder blue"               , PALETTERGB (176,224,230)},
  {"PowderBlue"                , PALETTERGB (176,224,230)},
  {"pale turquoise"            , PALETTERGB (175,238,238)},
  {"PaleTurquoise"             , PALETTERGB (175,238,238)},
  {"dark turquoise"            , PALETTERGB (  0,206,209)},
  {"DarkTurquoise"             , PALETTERGB (  0,206,209)},
  {"medium turquoise"          , PALETTERGB ( 72,209,204)},
  {"MediumTurquoise"           , PALETTERGB ( 72,209,204)},
  {"turquoise"                 , PALETTERGB ( 64,224,208)},
  {"cyan"                      , PALETTERGB (  0,255,255)},
  {"light cyan"                , PALETTERGB (224,255,255)},
  {"LightCyan"                 , PALETTERGB (224,255,255)},
  {"cadet blue"                , PALETTERGB ( 95,158,160)},
  {"CadetBlue"                 , PALETTERGB ( 95,158,160)},
  {"medium aquamarine"         , PALETTERGB (102,205,170)},
  {"MediumAquamarine"          , PALETTERGB (102,205,170)},
  {"aquamarine"                , PALETTERGB (127,255,212)},
  {"dark green"                , PALETTERGB (  0,100,  0)},
  {"DarkGreen"                 , PALETTERGB (  0,100,  0)},
  {"dark olive green"          , PALETTERGB ( 85,107, 47)},
  {"DarkOliveGreen"            , PALETTERGB ( 85,107, 47)},
  {"dark sea green"            , PALETTERGB (143,188,143)},
  {"DarkSeaGreen"              , PALETTERGB (143,188,143)},
  {"sea green"                 , PALETTERGB ( 46,139, 87)},
  {"SeaGreen"                  , PALETTERGB ( 46,139, 87)},
  {"medium sea green"          , PALETTERGB ( 60,179,113)},
  {"MediumSeaGreen"            , PALETTERGB ( 60,179,113)},
  {"light sea green"           , PALETTERGB ( 32,178,170)},
  {"LightSeaGreen"             , PALETTERGB ( 32,178,170)},
  {"pale green"                , PALETTERGB (152,251,152)},
  {"PaleGreen"                 , PALETTERGB (152,251,152)},
  {"spring green"              , PALETTERGB (  0,255,127)},
  {"SpringGreen"               , PALETTERGB (  0,255,127)},
  {"lawn green"                , PALETTERGB (124,252,  0)},
  {"LawnGreen"                 , PALETTERGB (124,252,  0)},
  {"green"                     , PALETTERGB (  0,255,  0)},
  {"chartreuse"                , PALETTERGB (127,255,  0)},
  {"medium spring green"       , PALETTERGB (  0,250,154)},
  {"MediumSpringGreen"         , PALETTERGB (  0,250,154)},
  {"green yellow"              , PALETTERGB (173,255, 47)},
  {"GreenYellow"               , PALETTERGB (173,255, 47)},
  {"lime green"                , PALETTERGB ( 50,205, 50)},
  {"LimeGreen"                 , PALETTERGB ( 50,205, 50)},
  {"yellow green"              , PALETTERGB (154,205, 50)},
  {"YellowGreen"               , PALETTERGB (154,205, 50)},
  {"forest green"              , PALETTERGB ( 34,139, 34)},
  {"ForestGreen"               , PALETTERGB ( 34,139, 34)},
  {"olive drab"                , PALETTERGB (107,142, 35)},
  {"OliveDrab"                 , PALETTERGB (107,142, 35)},
  {"dark khaki"                , PALETTERGB (189,183,107)},
  {"DarkKhaki"                 , PALETTERGB (189,183,107)},
  {"khaki"                     , PALETTERGB (240,230,140)},
  {"pale goldenrod"            , PALETTERGB (238,232,170)},
  {"PaleGoldenrod"             , PALETTERGB (238,232,170)},
  {"light goldenrod yellow"    , PALETTERGB (250,250,210)},
  {"LightGoldenrodYellow"      , PALETTERGB (250,250,210)},
  {"light yellow"              , PALETTERGB (255,255,224)},
  {"LightYellow"               , PALETTERGB (255,255,224)},
  {"yellow"                    , PALETTERGB (255,255,  0)},
  {"gold"                      , PALETTERGB (255,215,  0)},
  {"light goldenrod"           , PALETTERGB (238,221,130)},
  {"LightGoldenrod"            , PALETTERGB (238,221,130)},
  {"goldenrod"                 , PALETTERGB (218,165, 32)},
  {"dark goldenrod"            , PALETTERGB (184,134, 11)},
  {"DarkGoldenrod"             , PALETTERGB (184,134, 11)},
  {"rosy brown"                , PALETTERGB (188,143,143)},
  {"RosyBrown"                 , PALETTERGB (188,143,143)},
  {"indian red"                , PALETTERGB (205, 92, 92)},
  {"IndianRed"                 , PALETTERGB (205, 92, 92)},
  {"saddle brown"              , PALETTERGB (139, 69, 19)},
  {"SaddleBrown"               , PALETTERGB (139, 69, 19)},
  {"sienna"                    , PALETTERGB (160, 82, 45)},
  {"peru"                      , PALETTERGB (205,133, 63)},
  {"burlywood"                 , PALETTERGB (222,184,135)},
  {"beige"                     , PALETTERGB (245,245,220)},
  {"wheat"                     , PALETTERGB (245,222,179)},
  {"sandy brown"               , PALETTERGB (244,164, 96)},
  {"SandyBrown"                , PALETTERGB (244,164, 96)},
  {"tan"                       , PALETTERGB (210,180,140)},
  {"chocolate"                 , PALETTERGB (210,105, 30)},
  {"firebrick"                 , PALETTERGB (178,34, 34)},
  {"brown"                     , PALETTERGB (165,42, 42)},
  {"dark salmon"               , PALETTERGB (233,150,122)},
  {"DarkSalmon"                , PALETTERGB (233,150,122)},
  {"salmon"                    , PALETTERGB (250,128,114)},
  {"light salmon"              , PALETTERGB (255,160,122)},
  {"LightSalmon"               , PALETTERGB (255,160,122)},
  {"orange"                    , PALETTERGB (255,165,  0)},
  {"dark orange"               , PALETTERGB (255,140,  0)},
  {"DarkOrange"                , PALETTERGB (255,140,  0)},
  {"coral"                     , PALETTERGB (255,127, 80)},
  {"light coral"               , PALETTERGB (240,128,128)},
  {"LightCoral"                , PALETTERGB (240,128,128)},
  {"tomato"                    , PALETTERGB (255, 99, 71)},
  {"orange red"                , PALETTERGB (255, 69,  0)},
  {"OrangeRed"                 , PALETTERGB (255, 69,  0)},
  {"red"                       , PALETTERGB (255,  0,  0)},
  {"hot pink"                  , PALETTERGB (255,105,180)},
  {"HotPink"                   , PALETTERGB (255,105,180)},
  {"deep pink"                 , PALETTERGB (255, 20,147)},
  {"DeepPink"                  , PALETTERGB (255, 20,147)},
  {"pink"                      , PALETTERGB (255,192,203)},
  {"light pink"                , PALETTERGB (255,182,193)},
  {"LightPink"                 , PALETTERGB (255,182,193)},
  {"pale violet red"           , PALETTERGB (219,112,147)},
  {"PaleVioletRed"             , PALETTERGB (219,112,147)},
  {"maroon"                    , PALETTERGB (176, 48, 96)},
  {"medium violet red"         , PALETTERGB (199, 21,133)},
  {"MediumVioletRed"           , PALETTERGB (199, 21,133)},
  {"violet red"                , PALETTERGB (208, 32,144)},
  {"VioletRed"                 , PALETTERGB (208, 32,144)},
  {"magenta"                   , PALETTERGB (255,  0,255)},
  {"violet"                    , PALETTERGB (238,130,238)},
  {"plum"                      , PALETTERGB (221,160,221)},
  {"orchid"                    , PALETTERGB (218,112,214)},
  {"medium orchid"             , PALETTERGB (186, 85,211)},
  {"MediumOrchid"              , PALETTERGB (186, 85,211)},
  {"dark orchid"               , PALETTERGB (153, 50,204)},
  {"DarkOrchid"                , PALETTERGB (153, 50,204)},
  {"dark violet"               , PALETTERGB (148,  0,211)},
  {"DarkViolet"                , PALETTERGB (148,  0,211)},
  {"blue violet"               , PALETTERGB (138, 43,226)},
  {"BlueViolet"                , PALETTERGB (138, 43,226)},
  {"purple"                    , PALETTERGB (160, 32,240)},
  {"medium purple"             , PALETTERGB (147,112,219)},
  {"MediumPurple"              , PALETTERGB (147,112,219)},
  {"thistle"                   , PALETTERGB (216,191,216)},
  {"gray0"                     , PALETTERGB (  0,  0,  0)},
  {"grey0"                     , PALETTERGB (  0,  0,  0)},
  {"dark grey"                 , PALETTERGB (169,169,169)},
  {"DarkGrey"                  , PALETTERGB (169,169,169)},
  {"dark gray"                 , PALETTERGB (169,169,169)},
  {"DarkGray"                  , PALETTERGB (169,169,169)},
  {"dark blue"                 , PALETTERGB (  0,  0,139)},
  {"DarkBlue"                  , PALETTERGB (  0,  0,139)},
  {"dark cyan"                 , PALETTERGB (  0,139,139)},
  {"DarkCyan"                  , PALETTERGB (  0,139,139)},
  {"dark magenta"              , PALETTERGB (139,  0,139)},
  {"DarkMagenta"               , PALETTERGB (139,  0,139)},
  {"dark red"                  , PALETTERGB (139,  0,  0)},
  {"DarkRed"                   , PALETTERGB (139,  0,  0)},
  {"light green"               , PALETTERGB (144,238,144)},
  {"LightGreen"                , PALETTERGB (144,238,144)},
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};

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static Lisp_Object
w32_default_color_map (void)
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{
  int i;
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  colormap_t *pc = w32_color_map;
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  Lisp_Object cmap;
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  block_input ();
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  cmap = Qnil;
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  for (i = 0; i < ARRAYELTS (w32_color_map); pc++, i++)
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    cmap = Fcons (Fcons (build_string (pc->name),
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			 make_fixnum (pc->colorref)),
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		  cmap);
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  unblock_input ();
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  return (cmap);
}

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DEFUN ("w32-default-color-map", Fw32_default_color_map, Sw32_default_color_map,
       0, 0, 0, doc: /* Return the default color map.  */)
  (void)
{
  return w32_default_color_map ();
}

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static Lisp_Object
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w32_color_map_lookup (const char *colorname)
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{
  Lisp_Object tail, ret = Qnil;

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  block_input ();
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  for (tail = Vw32_color_map; CONSP (tail); tail = XCDR (tail))
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    {
      register Lisp_Object elt, tem;

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      elt = XCAR (tail);
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      if (!CONSP (elt)) continue;

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      tem = XCAR (elt);
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      if (lstrcmpi (SSDATA (tem), colorname) == 0)
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	{
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	  ret = Fcdr (elt);
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	  break;
	}

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      maybe_quit ();
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    }

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  unblock_input ();
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  return ret;
}

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static void
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add_system_logical_colors_to_map (Lisp_Object *system_colors)
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{
  HKEY colors_key;

  /* Other registry operations are done with input blocked.  */
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  block_input ();
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  /* Look for "Control Panel/Colors" under User and Machine registry
     settings.  */
  if (RegOpenKeyEx (HKEY_CURRENT_USER, "Control Panel\\Colors", 0,
		    KEY_READ, &colors_key) == ERROR_SUCCESS
      || RegOpenKeyEx (HKEY_LOCAL_MACHINE, "Control Panel\\Colors", 0,
		       KEY_READ, &colors_key) == ERROR_SUCCESS)
    {
      /* List all keys.  */
      char color_buffer[64];
      char full_name_buffer[MAX_PATH + SYSTEM_COLOR_PREFIX_LEN];
      int index = 0;
      DWORD name_size, color_size;
      char *name_buffer = full_name_buffer + SYSTEM_COLOR_PREFIX_LEN;

      name_size = sizeof (full_name_buffer) - SYSTEM_COLOR_PREFIX_LEN;
      color_size = sizeof (color_buffer);

      strcpy (full_name_buffer, SYSTEM_COLOR_PREFIX);

      while (RegEnumValueA (colors_key, index, name_buffer, &name_size,
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			    NULL, NULL, (LPBYTE)color_buffer, &color_size)
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	     == ERROR_SUCCESS)
	{
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	  unsigned r, g, b;
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	  if (sscanf (color_buffer, " %u %u %u", &r, &g, &b) == 3)
	    *system_colors = Fcons (Fcons (build_string (full_name_buffer),
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					   make_fixnum (RGB (r, g, b))),
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				    *system_colors);

	  name_size = sizeof (full_name_buffer) - SYSTEM_COLOR_PREFIX_LEN;
	  color_size = sizeof (color_buffer);
	  index++;
	}
      RegCloseKey (colors_key);
    }

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  unblock_input ();
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}


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static Lisp_Object
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x_to_w32_color (const char * colorname)
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{
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  register Lisp_Object ret = Qnil;

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  block_input ();
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  unsigned short r, g, b;
  if (parse_color_spec (colorname, &r, &g, &b))
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    {
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      unblock_input ();
      /* Throw away the low 8 bits and return 0xBBGGRR.  */
      return make_fixnum ((b & 0xff00) << 8 | (g & 0xff00) | r >> 8);
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    }
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  /* I am not going to attempt to handle any of the CIE color schemes
     or TekHVC, since I don't know the algorithms for conversion to
     RGB.  */
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  /* If we fail to lookup the color name in w32_color_map, then check the
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     colorname to see if it can be crudely approximated: If the X color
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     ends in a number (e.g., "darkseagreen2"), strip the number and
     return the result of looking up the base color name.  */
  ret = w32_color_map_lookup (colorname);
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  if (NILP (ret))
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    {
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      int len = strlen (colorname);
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      if (isdigit (colorname[len - 1]))
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	{
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	  char *ptr, *approx = alloca (len + 1);
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	  strcpy (approx, colorname);
	  ptr = &approx[len - 1];
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	  while (ptr > approx && isdigit (*ptr))
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	      *ptr-- = '\0';
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	  ret = w32_color_map_lookup (approx);
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	}
    }
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  unblock_input ();
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  return ret;
}

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void
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w32_regenerate_palette (struct frame *f)
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{
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  struct w32_palette_entry * list;
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  LOGPALETTE *          log_palette;
  HPALETTE              new_palette;
  int                   i;

  /* don't bother trying to create palette if not supported */
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  if (! FRAME_DISPLAY_INFO (f)->has_palette)
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    return;

  log_palette = (LOGPALETTE *)
    alloca (sizeof (LOGPALETTE) +
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	     FRAME_DISPLAY_INFO (f)->num_colors * sizeof (PALETTEENTRY));
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  log_palette->palVersion = 0x300;
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  log_palette->palNumEntries = FRAME_DISPLAY_INFO (f)->num_colors;
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  list = FRAME_DISPLAY_INFO (f)->color_list;
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  for (i = 0;
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       i < FRAME_DISPLAY_INFO (f)->num_colors;
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       i++, list = list->next)
    log_palette->palPalEntry[i] = list->entry;

  new_palette = CreatePalette (log_palette);

  enter_crit ();

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  if (FRAME_DISPLAY_INFO (f)->palette)
    DeleteObject (FRAME_DISPLAY_INFO (f)->palette);
  FRAME_DISPLAY_INFO (f)->palette = new_palette;
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  /* Realize display palette and garbage all frames. */
  release_frame_dc (f, get_frame_dc (f));

  leave_crit ();
}

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#define W32_COLOR(pe)  RGB (pe.peRed, pe.peGreen, pe.peBlue)
#define SET_W32_COLOR(pe, color) \
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  do \
    { \
      pe.peRed = GetRValue (color); \
      pe.peGreen = GetGValue (color); \
      pe.peBlue = GetBValue (color); \
      pe.peFlags = 0; \
    } while (0)

#if 0
/* Keep these around in case we ever want to track color usage. */
void
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w32_map_color (struct frame *f, COLORREF color)
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{
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  struct w32_palette_entry * list = FRAME_DISPLAY_INFO (f)->color_list;
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  if (NILP (Vw32_enable_palette))
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    return;

  /* check if color is already mapped */
  while (list)
    {
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      if (W32_COLOR (list->entry) == color)
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	{
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	  ++list->refcount;
	  return;
	}
      list = list->next;
    }

  /* not already mapped, so add to list and recreate Windows palette */
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  list = xmalloc (sizeof (struct w32_palette_entry));
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  SET_W32_COLOR (list->entry, color);
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  list->refcount = 1;
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  list->next = FRAME_DISPLAY_INFO (f)->color_list;
  FRAME_DISPLAY_INFO (f)->color_list = list;
  FRAME_DISPLAY_INFO (f)->num_colors++;
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  /* set flag that palette must be regenerated */
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  FRAME_DISPLAY_INFO (f)->regen_palette = TRUE;
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}

void
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w32_unmap_color (struct frame *f, COLORREF color)
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{
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  struct w32_palette_entry * list = FRAME_DISPLAY_INFO (f)->color_list;
  struct w32_palette_entry **prev = &FRAME_DISPLAY_INFO (f)->color_list;
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  if (NILP (Vw32_enable_palette))
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    return;

  /* check if color is already mapped */
  while (list)
    {
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      if (W32_COLOR (list->entry) == color)
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	{
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	  if (--list->refcount == 0)
	    {
	      *prev = list->next;
	      xfree (list);
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	      FRAME_DISPLAY_INFO (f)->num_colors--;
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	      break;
	    }
	  else
	    return;
	}
      prev = &list->next;
      list = list->next;
    }

  /* set flag that palette must be regenerated */
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  FRAME_DISPLAY_INFO (f)->regen_palette = TRUE;
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}
#endif

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/* Gamma-correct COLOR on frame F.  */

void
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gamma_correct (struct frame *f, COLORREF *color)
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{
  if (f->gamma)
    {
      *color = PALETTERGB (
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	pow (GetRValue (*color) / 255.0, f->gamma) * 255.0 + 0.5,
	pow (GetGValue (*color) / 255.0, f->gamma) * 255.0 + 0.5,
	pow (GetBValue (*color) / 255.0, f->gamma) * 255.0 + 0.5);
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    }
}


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/* Decide if color named COLOR is valid for the display associated with
   the selected frame; if so, return the rgb values in COLOR_DEF.
   If ALLOC is nonzero, allocate a new colormap cell.  */

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bool
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w32_defined_color (struct frame *f, const char *color, Emacs_Color *color_def,
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		   bool alloc_p, bool _makeIndex)
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{
  register Lisp_Object tem;
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  COLORREF w32_color_ref;
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  tem = x_to_w32_color (color);
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  if (!NILP (tem))
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    {
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      if (f)
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	{
	  /* Apply gamma correction.  */
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	  w32_color_ref = XUFIXNUM (tem);
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	  gamma_correct (f, &w32_color_ref);
	  XSETINT (tem, w32_color_ref);
	}
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      /* Map this color to the palette if it is enabled. */
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      if (!NILP (Vw32_enable_palette))
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	{
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	  struct w32_palette_entry * entry =
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	    one_w32_display_info.color_list;
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	  struct w32_palette_entry ** prev =
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	    &one_w32_display_info.color_list;
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	  /* check if color is already mapped */
	  while (entry)
	    {
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	      if (W32_COLOR (entry->entry) == XUFIXNUM (tem))
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		break;
	      prev = &entry->next;
	      entry = entry->next;
	    }

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	  if (entry == NULL && alloc_p)
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	    {
	      /* not already mapped, so add to list */
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	      entry = xmalloc (sizeof (struct w32_palette_entry));
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	      SET_W32_COLOR (entry->entry, XUFIXNUM (tem));
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	      entry->next = NULL;
	      *prev = entry;
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	      one_w32_display_info.num_colors++;
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	      /* set flag that palette must be regenerated */
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	      one_w32_display_info.regen_palette = TRUE;
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	    }
	}
      /* Ensure COLORREF value is snapped to nearest color in (default)
	 palette by simulating the PALETTERGB macro.  This works whether
	 or not the display device has a palette. */
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      w32_color_ref = XUFIXNUM (tem) | 0x2000000;
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      color_def->pixel = w32_color_ref;
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      color_def->red = GetRValue (w32_color_ref) * 256;
      color_def->green = GetGValue (w32_color_ref) * 256;
      color_def->blue = GetBValue (w32_color_ref) * 256;
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      return 1;
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    }
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  else
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    {
      return 0;
    }
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}

/* Given a string ARG naming a color, compute a pixel value from it
   suitable for screen F.
   If F is not a color screen, return DEF (default) regardless of what
   ARG says.  */

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static int
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w32_decode_color (struct frame *f, Lisp_Object arg, int def)
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{
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  Emacs_Color cdef;
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  CHECK_STRING (arg);
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  if (strcmp (SSDATA (arg), "black") == 0)
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    return BLACK_PIX_DEFAULT (f);
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  else if (strcmp (SSDATA (arg), "white") == 0)
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    return WHITE_PIX_DEFAULT (f);

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  if ((FRAME_DISPLAY_INFO (f)->n_planes * FRAME_DISPLAY_INFO (f)->n_cbits) == 1)
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    return def;

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  /* w32_defined_color is responsible for coping with failures
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     by looking for a near-miss.  */
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  if (w32_defined_color (f, SSDATA (arg), &cdef, true, false))
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    return cdef.pixel;
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  /* defined_color failed; return an ultimate default.  */
  return def;
}

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/* Functions called only from `gui_set_frame_parameters'
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   to set individual parameters.

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   If FRAME_W32_WINDOW (f) is 0,
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   the frame is being created and its window does not exist yet.
   In that case, just record the parameter's new value
   in the standard place; do not attempt to change the window.  */

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static void
w32_set_foreground_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
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{
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  struct w32_output *x = f->output_data.w32;
  PIX_TYPE fg, old_fg;

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  fg = w32_decode_color (f, arg, BLACK_PIX_DEFAULT (f));
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  old_fg = FRAME_FOREGROUND_PIXEL (f);
  FRAME_FOREGROUND_PIXEL (f) = fg;
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  if (FRAME_W32_WINDOW (f) != 0)
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