dlls/winex11.drv/systray.c - wine - Git at Google

 /*
  * X11 system tray management
  *
  * Copyright (C) 2004 Mike Hearn, for CodeWeavers
  * Copyright (C) 2005 Robert Shearman
  * Copyright (C) 2008 Alexandre Julliard
  *
  * 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

 #include "config.h"

 #include <assert.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif

 #include <X11/Xlib.h>

 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"
 #include "winuser.h"
 #include "commctrl.h"
 #include "shellapi.h"

 #include "x11drv.h"
 #include "wine/list.h"
 #include "wine/debug.h"

 WINE_DEFAULT_DEBUG_CHANNEL(systray);

 /* an individual systray icon */
 struct tray_icon
 {
     struct list    entry;
     HICON          image;    /* the image to render */
     HWND           owner;    /* the HWND passed in to the Shell_NotifyIcon call */
     HWND           window;   /* the adaptor window */
     HWND           tooltip;  /* Icon tooltip */
     UINT           id;       /* the unique id given by the app */
     UINT           callback_message;
     WCHAR          tiptext[256]; /* Tooltip text. If empty => tooltip disabled */
     WCHAR          tiptitle[64]; /* Tooltip title for ballon style tooltips.  If empty => tooltip is not balloon style. */
 };

 static struct list icon_list = LIST_INIT( icon_list );

 static const WCHAR tray_classname[] = {'_','_','w','i','n','e','x','1','1','_','t','r','a','y','_','w','i','n','d','o','w',0};

 static BOOL delete_icon( struct tray_icon *icon );

 #define SYSTEM_TRAY_REQUEST_DOCK  0
 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
 #define SYSTEM_TRAY_CANCEL_MESSAGE  2

 #define ICON_BORDER 2

 /* retrieves icon record by owner window and ID */
 static struct tray_icon *get_icon(HWND owner, UINT id)
 {
     struct tray_icon *this;

     LIST_FOR_EACH_ENTRY( this, &icon_list, struct tray_icon, entry )
         if ((this->id == id) && (this->owner == owner)) return this;
     return NULL;
 }

 /* create tooltip window for icon */
 static void create_tooltip(struct tray_icon *icon)
 {
     static BOOL tooltips_initialized = FALSE;

     if (!tooltips_initialized)
     {
         INITCOMMONCONTROLSEX init_tooltip;

         init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
         init_tooltip.dwICC = ICC_TAB_CLASSES;

         InitCommonControlsEx(&init_tooltip);
         tooltips_initialized = TRUE;
     }
     if (icon->tiptitle[0] != 0)
     {
         icon->tooltip = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
                                          WS_POPUP | TTS_ALWAYSTIP | TTS_BALLOON,
                                          CW_USEDEFAULT, CW_USEDEFAULT,
                                          CW_USEDEFAULT, CW_USEDEFAULT,
                                          icon->window, NULL, NULL, NULL);
     }
     else
     {
         icon->tooltip = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
                                          WS_POPUP | TTS_ALWAYSTIP,
                                          CW_USEDEFAULT, CW_USEDEFAULT,
                                          CW_USEDEFAULT, CW_USEDEFAULT,
                                          icon->window, NULL, NULL, NULL);
     }
     if (icon->tooltip)
     {
         TTTOOLINFOW ti;
         ZeroMemory(&ti, sizeof(ti));
         ti.cbSize = sizeof(TTTOOLINFOW);
         ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
         ti.hwnd = icon->window;
         ti.uId = (UINT_PTR)icon->window;
         ti.lpszText = icon->tiptext;
         SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
     }
 }

 /* synchronize tooltip text with tooltip window */
 static void update_tooltip_text(struct tray_icon *icon)
 {
     TTTOOLINFOW ti;

     ZeroMemory(&ti, sizeof(ti));
     ti.cbSize = sizeof(TTTOOLINFOW);
     ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
     ti.hwnd = icon->window;
     ti.uId = (UINT_PTR)icon->window;
     ti.lpszText = icon->tiptext;

     SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 }

 /* window procedure for the tray window */
 static LRESULT WINAPI tray_wndproc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
 {
     struct tray_icon *icon = NULL;
     BOOL ret;

     WINE_TRACE("hwnd=%p, msg=0x%x\n", hwnd, msg);

     /* set the icon data for the window from the data passed into CreateWindow */
     if (msg == WM_NCCREATE)
         SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LPARAM)((const CREATESTRUCTW *)lparam)->lpCreateParams);

     icon = (struct tray_icon *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);

     switch (msg)
     {
     case WM_PAINT:
         {
             PAINTSTRUCT ps;
             RECT rc;
             HDC hdc;
             int cx = GetSystemMetrics( SM_CXSMICON );
             int cy = GetSystemMetrics( SM_CYSMICON );

             hdc = BeginPaint(hwnd, &ps);
             GetClientRect(hwnd, &rc);
             TRACE("painting rect %s\n", wine_dbgstr_rect(&rc));
             DrawIconEx( hdc, (rc.left + rc.right - cx) / 2, (rc.top + rc.bottom - cy) / 2,
                         icon->image, cx, cy, 0, 0, DI_DEFAULTSIZE|DI_NORMAL );
             EndPaint(hwnd, &ps);
             break;
         }

     case WM_MOUSEMOVE:
     case WM_LBUTTONDOWN:
     case WM_LBUTTONUP:
     case WM_RBUTTONDOWN:
     case WM_RBUTTONUP:
     case WM_MBUTTONDOWN:
     case WM_MBUTTONUP:
     case WM_LBUTTONDBLCLK:
     case WM_RBUTTONDBLCLK:
     case WM_MBUTTONDBLCLK:
         /* notify the owner hwnd of the message */
         TRACE("relaying 0x%x\n", msg);
         ret = PostMessageW(icon->owner, icon->callback_message, (WPARAM) icon->id, (LPARAM) msg);
         if (!ret && (GetLastError() == ERROR_INVALID_WINDOW_HANDLE))
         {
             WARN( "application window was destroyed, removing icon %u\n", icon->id );
             delete_icon( icon );
         }
         break;

     case WM_TIMER:
         if (!IsWindow( icon->owner )) delete_icon( icon );
         return 0;

     default:
         return DefWindowProcW(hwnd, msg, wparam, lparam);
     }
     return 0;
 }

 /* find the X11 window owner the system tray selection */
 static Window get_systray_selection_owner( Display *display )
 {
     static Atom systray_atom;
     Window ret;

     if (root_window != DefaultRootWindow( display )) return 0;

     wine_tsx11_lock();
     if (!systray_atom)
     {
         if (DefaultScreen( display ) == 0)
             systray_atom = x11drv_atom(_NET_SYSTEM_TRAY_S0);
         else
         {
             char systray_buffer[29]; /* strlen(_NET_SYSTEM_TRAY_S4294967295)+1 */
             sprintf( systray_buffer, "_NET_SYSTEM_TRAY_S%u", DefaultScreen( display ) );
             systray_atom = XInternAtom( display, systray_buffer, False );
         }
     }
     ret = XGetSelectionOwner( display, systray_atom );
     wine_tsx11_unlock();
     return ret;
 }


 /* dock the given X window with the NETWM system tray */
 static void dock_systray_window( Display *display, HWND hwnd, Window systray_window )
 {
     struct x11drv_win_data *data;
     XEvent ev;
     XSetWindowAttributes attr;

     if (!(data = X11DRV_get_win_data( hwnd )) &&
         !(data = X11DRV_create_win_data( hwnd ))) return;

     TRACE( "icon window %p/%lx managed %u\n", data->hwnd, data->whole_window, data->managed );

     make_window_embedded( display, data );

     /* send the docking request message */
     ev.xclient.type = ClientMessage;
     ev.xclient.window = systray_window;
     ev.xclient.message_type = x11drv_atom( _NET_SYSTEM_TRAY_OPCODE );
     ev.xclient.format = 32;
     ev.xclient.data.l[0] = CurrentTime;
     ev.xclient.data.l[1] = SYSTEM_TRAY_REQUEST_DOCK;
     ev.xclient.data.l[2] = data->whole_window;
     ev.xclient.data.l[3] = 0;
     ev.xclient.data.l[4] = 0;
     wine_tsx11_lock();
     XSendEvent( display, systray_window, False, NoEventMask, &ev );
     attr.background_pixmap = ParentRelative;
     attr.bit_gravity = ForgetGravity;
     XChangeWindowAttributes( display, data->whole_window, CWBackPixmap | CWBitGravity, &attr );
     XChangeWindowAttributes( display, data->client_window, CWBackPixmap | CWBitGravity, &attr );
     wine_tsx11_unlock();
 }


 /* hide a tray icon */
 static BOOL hide_icon( struct tray_icon *icon )
 {
     TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );

     if (!icon->window) return TRUE;  /* already hidden */

     DestroyWindow(icon->window);
     DestroyWindow(icon->tooltip);
     icon->window = 0;
     icon->tooltip = 0;
     return TRUE;
 }

 /* make the icon visible */
 static BOOL show_icon( struct tray_icon *icon )
 {
     RECT rect;
     static BOOL class_registered;
     Window systray_window;
     Display *display = thread_display();

     TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );

     if (icon->window) return TRUE;  /* already shown */

     if (!class_registered)
     {
         WNDCLASSEXW class;

         ZeroMemory( &class, sizeof(class) );
         class.cbSize        = sizeof(class);
         class.lpfnWndProc   = tray_wndproc;
         class.hCursor       = LoadCursorW( 0, (LPCWSTR)IDC_ARROW );
         class.lpszClassName = tray_classname;
         class.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;

         if (!RegisterClassExW(&class) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
         {
             WINE_ERR( "Could not register tray window class\n" );
             return FALSE;
         }
         class_registered = TRUE;
     }

     if (!(systray_window = get_systray_selection_owner( display ))) return FALSE;

     rect.left = 0;
     rect.top = 0;
     rect.right = GetSystemMetrics( SM_CXSMICON ) + 2*ICON_BORDER;
     rect.bottom = GetSystemMetrics( SM_CYSMICON ) + 2*ICON_BORDER;

     icon->window = CreateWindowExW( WS_EX_APPWINDOW, tray_classname, NULL, WS_CLIPSIBLINGS | WS_POPUP,
                                     CW_USEDEFAULT, CW_USEDEFAULT,
                                     rect.right - rect.left, rect.bottom - rect.top,
                                     NULL, NULL, NULL, icon );
     create_tooltip( icon );
     dock_systray_window( display, icon->window, systray_window );
     SetTimer( icon->window, 1, 1000, NULL );
     ShowWindow( icon->window, SW_SHOWNA );
     return TRUE;
 }

 /* Modifies an existing icon record */
 static BOOL modify_icon( struct tray_icon *icon, NOTIFYICONDATAW *nid )
 {
     TRACE( "id=0x%x hwnd=%p flags=%x\n", nid->uID, nid->hWnd, nid->uFlags );

     if ((nid->uFlags & NIF_STATE) && (nid->dwStateMask & NIS_HIDDEN))
     {
         if (nid->dwState & NIS_HIDDEN) hide_icon( icon );
         else show_icon( icon );
     }

     if (nid->uFlags & NIF_ICON)
     {
         if (icon->image) DestroyIcon(icon->image);
         icon->image = CopyIcon(nid->hIcon);
         if (icon->window)
         {
             struct x11drv_win_data *data = X11DRV_get_win_data( icon->window );
             if (data) XClearArea( gdi_display, data->client_window, 0, 0, 0, 0, True );
         }
     }

     if (nid->uFlags & NIF_MESSAGE)
     {
         icon->callback_message = nid->uCallbackMessage;
     }
     if (nid->uFlags & NIF_TIP)
     {
         lstrcpynW(icon->tiptext, nid->szTip, sizeof(icon->tiptext)/sizeof(WCHAR));
         icon->tiptitle[0] = 0;
         if (icon->tooltip) update_tooltip_text(icon);
     }
     if (nid->uFlags & NIF_INFO && nid->cbSize >= NOTIFYICONDATAA_V2_SIZE)
     {
         lstrcpynW(icon->tiptext, nid->szInfo, sizeof(icon->tiptext)/sizeof(WCHAR));
         lstrcpynW(icon->tiptitle, nid->szInfoTitle, sizeof(icon->tiptitle)/sizeof(WCHAR));
         if (icon->tooltip) update_tooltip_text(icon);
     }
     return TRUE;
 }

 /* Adds a new icon record to the list */
 static BOOL add_icon(NOTIFYICONDATAW *nid)
 {
     struct tray_icon  *icon;

     WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

     if ((icon = get_icon(nid->hWnd, nid->uID)))
     {
         WINE_WARN("duplicate tray icon add, buggy app?\n");
         return FALSE;
     }

     if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
     {
         WINE_ERR("out of memory\n");
         return FALSE;
     }

     ZeroMemory(icon, sizeof(struct tray_icon));
     icon->id     = nid->uID;
     icon->owner  = nid->hWnd;

     list_add_tail(&icon_list, &icon->entry);

     /* if hidden state is specified, modify_icon will take care of it */
     if (!((nid->uFlags & NIF_STATE) && (nid->dwStateMask & NIS_HIDDEN)))
         show_icon( icon );

     return modify_icon( icon, nid );
 }

 /* delete tray icon window and icon structure */
 static BOOL delete_icon( struct tray_icon *icon )
 {
     hide_icon( icon );
     list_remove( &icon->entry );
     DestroyIcon( icon->image );
     HeapFree( GetProcessHeap(), 0, icon );
     return TRUE;
 }


 /***********************************************************************
  *              wine_notify_icon   (X11DRV.@)
  *
  * Driver-side implementation of Shell_NotifyIcon.
  */
 int CDECL wine_notify_icon( DWORD msg, NOTIFYICONDATAW *data )
 {
     BOOL ret = FALSE;
     struct tray_icon *icon;

     switch (msg)
     {
     case NIM_ADD:
         if (!get_systray_selection_owner( thread_init_display() ))
             return -1;  /* fall back to default handling */
         ret = add_icon( data );
         break;
     case NIM_DELETE:
         if ((icon = get_icon( data->hWnd, data->uID ))) ret = delete_icon( icon );
         break;
     case NIM_MODIFY:
         if ((icon = get_icon( data->hWnd, data->uID ))) ret = modify_icon( icon, data );
         break;
     default:
         FIXME( "unhandled tray message: %u\n", msg );
         break;
     }
     return ret;
 }
	/*
	* X11 system tray management
	*
	* Copyright (C) 2004 Mike Hearn, for CodeWeavers
	* Copyright (C) 2005 Robert Shearman
	* Copyright (C) 2008 Alexandre Julliard
	*
	* 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*/

	#include "config.h"

	#include <assert.h>
	#include <stdarg.h>
	#include <stdlib.h>
	#include <stdio.h>
	#ifdef HAVE_UNISTD_H
	# include <unistd.h>
	#endif

	#include <X11/Xlib.h>

	#include "windef.h"
	#include "winbase.h"
	#include "wingdi.h"
	#include "winuser.h"
	#include "commctrl.h"
	#include "shellapi.h"

	#include "x11drv.h"
	#include "wine/list.h"
	#include "wine/debug.h"

	WINE_DEFAULT_DEBUG_CHANNEL(systray);

	/* an individual systray icon */
	struct tray_icon
	{
	struct list entry;
	HICON image; /* the image to render */
	HWND owner; /* the HWND passed in to the Shell_NotifyIcon call */
	HWND window; /* the adaptor window */
	HWND tooltip; /* Icon tooltip */
	UINT id; /* the unique id given by the app */
	UINT callback_message;
	WCHAR tiptext[256]; /* Tooltip text. If empty => tooltip disabled */
	WCHAR tiptitle[64]; /* Tooltip title for ballon style tooltips. If empty => tooltip is not balloon style. */
	};

	static struct list icon_list = LIST_INIT( icon_list );

	static const WCHAR tray_classname[] = {'_','_','w','i','n','e','x','1','1','_','t','r','a','y','_','w','i','n','d','o','w',0};

	static BOOL delete_icon( struct tray_icon *icon );

	#define SYSTEM_TRAY_REQUEST_DOCK 0
	#define SYSTEM_TRAY_BEGIN_MESSAGE 1
	#define SYSTEM_TRAY_CANCEL_MESSAGE 2

	#define ICON_BORDER 2

	/* retrieves icon record by owner window and ID */
	static struct tray_icon *get_icon(HWND owner, UINT id)
	{
	struct tray_icon *this;

	LIST_FOR_EACH_ENTRY( this, &icon_list, struct tray_icon, entry )
	if ((this->id == id) && (this->owner == owner)) return this;
	return NULL;
	}

	/* create tooltip window for icon */
	static void create_tooltip(struct tray_icon *icon)
	{
	static BOOL tooltips_initialized = FALSE;

	if (!tooltips_initialized)
	{
	INITCOMMONCONTROLSEX init_tooltip;

	init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
	init_tooltip.dwICC = ICC_TAB_CLASSES;

	InitCommonControlsEx(&init_tooltip);
	tooltips_initialized = TRUE;
	}
	if (icon->tiptitle[0] != 0)
	{
	icon->tooltip = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
	WS_POPUP \| TTS_ALWAYSTIP \| TTS_BALLOON,
	CW_USEDEFAULT, CW_USEDEFAULT,
	CW_USEDEFAULT, CW_USEDEFAULT,
	icon->window, NULL, NULL, NULL);
	}
	else
	{
	icon->tooltip = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
	WS_POPUP \| TTS_ALWAYSTIP,
	CW_USEDEFAULT, CW_USEDEFAULT,
	CW_USEDEFAULT, CW_USEDEFAULT,
	icon->window, NULL, NULL, NULL);
	}
	if (icon->tooltip)
	{
	TTTOOLINFOW ti;
	ZeroMemory(&ti, sizeof(ti));
	ti.cbSize = sizeof(TTTOOLINFOW);
	ti.uFlags = TTF_SUBCLASS \| TTF_IDISHWND;
	ti.hwnd = icon->window;
	ti.uId = (UINT_PTR)icon->window;
	ti.lpszText = icon->tiptext;
	SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
	}
	}

	/* synchronize tooltip text with tooltip window */
	static void update_tooltip_text(struct tray_icon *icon)
	{
	TTTOOLINFOW ti;

	ZeroMemory(&ti, sizeof(ti));
	ti.cbSize = sizeof(TTTOOLINFOW);
	ti.uFlags = TTF_SUBCLASS \| TTF_IDISHWND;
	ti.hwnd = icon->window;
	ti.uId = (UINT_PTR)icon->window;
	ti.lpszText = icon->tiptext;

	SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
	}

	/* window procedure for the tray window */
	static LRESULT WINAPI tray_wndproc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
	{
	struct tray_icon *icon = NULL;
	BOOL ret;

	WINE_TRACE("hwnd=%p, msg=0x%x\n", hwnd, msg);

	/* set the icon data for the window from the data passed into CreateWindow */
	if (msg == WM_NCCREATE)
	SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LPARAM)((const CREATESTRUCTW *)lparam)->lpCreateParams);

	icon = (struct tray_icon *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);

	switch (msg)
	{
	case WM_PAINT:
	{
	PAINTSTRUCT ps;
	RECT rc;
	HDC hdc;
	int cx = GetSystemMetrics( SM_CXSMICON );
	int cy = GetSystemMetrics( SM_CYSMICON );

	hdc = BeginPaint(hwnd, &ps);
	GetClientRect(hwnd, &rc);
	TRACE("painting rect %s\n", wine_dbgstr_rect(&rc));
	DrawIconEx( hdc, (rc.left + rc.right - cx) / 2, (rc.top + rc.bottom - cy) / 2,
	icon->image, cx, cy, 0, 0, DI_DEFAULTSIZE\|DI_NORMAL );
	EndPaint(hwnd, &ps);
	break;
	}

	case WM_MOUSEMOVE:
	case WM_LBUTTONDOWN:
	case WM_LBUTTONUP:
	case WM_RBUTTONDOWN:
	case WM_RBUTTONUP:
	case WM_MBUTTONDOWN:
	case WM_MBUTTONUP:
	case WM_LBUTTONDBLCLK:
	case WM_RBUTTONDBLCLK:
	case WM_MBUTTONDBLCLK:
	/* notify the owner hwnd of the message */
	TRACE("relaying 0x%x\n", msg);
	ret = PostMessageW(icon->owner, icon->callback_message, (WPARAM) icon->id, (LPARAM) msg);
	if (!ret && (GetLastError() == ERROR_INVALID_WINDOW_HANDLE))
	{
	WARN( "application window was destroyed, removing icon %u\n", icon->id );
	delete_icon( icon );
	}
	break;

	case WM_TIMER:
	if (!IsWindow( icon->owner )) delete_icon( icon );
	return 0;

	default:
	return DefWindowProcW(hwnd, msg, wparam, lparam);
	}
	return 0;
	}

	/* find the X11 window owner the system tray selection */
	static Window get_systray_selection_owner( Display *display )
	{
	static Atom systray_atom;
	Window ret;

	if (root_window != DefaultRootWindow( display )) return 0;

	wine_tsx11_lock();
	if (!systray_atom)
	{
	if (DefaultScreen( display ) == 0)
	systray_atom = x11drv_atom(_NET_SYSTEM_TRAY_S0);
	else
	{
	char systray_buffer[29]; /* strlen(_NET_SYSTEM_TRAY_S4294967295)+1 */
	sprintf( systray_buffer, "_NET_SYSTEM_TRAY_S%u", DefaultScreen( display ) );
	systray_atom = XInternAtom( display, systray_buffer, False );
	}
	}
	ret = XGetSelectionOwner( display, systray_atom );
	wine_tsx11_unlock();
	return ret;
	}


	/* dock the given X window with the NETWM system tray */
	static void dock_systray_window( Display *display, HWND hwnd, Window systray_window )
	{
	struct x11drv_win_data *data;
	XEvent ev;
	XSetWindowAttributes attr;

	if (!(data = X11DRV_get_win_data( hwnd )) &&
	!(data = X11DRV_create_win_data( hwnd ))) return;

	TRACE( "icon window %p/%lx managed %u\n", data->hwnd, data->whole_window, data->managed );

	make_window_embedded( display, data );

	/* send the docking request message */
	ev.xclient.type = ClientMessage;
	ev.xclient.window = systray_window;
	ev.xclient.message_type = x11drv_atom( _NET_SYSTEM_TRAY_OPCODE );
	ev.xclient.format = 32;
	ev.xclient.data.l[0] = CurrentTime;
	ev.xclient.data.l[1] = SYSTEM_TRAY_REQUEST_DOCK;
	ev.xclient.data.l[2] = data->whole_window;
	ev.xclient.data.l[3] = 0;
	ev.xclient.data.l[4] = 0;
	wine_tsx11_lock();
	XSendEvent( display, systray_window, False, NoEventMask, &ev );
	attr.background_pixmap = ParentRelative;
	attr.bit_gravity = ForgetGravity;
	XChangeWindowAttributes( display, data->whole_window, CWBackPixmap \| CWBitGravity, &attr );
	XChangeWindowAttributes( display, data->client_window, CWBackPixmap \| CWBitGravity, &attr );
	wine_tsx11_unlock();
	}


	/* hide a tray icon */
	static BOOL hide_icon( struct tray_icon *icon )
	{
	TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );

	if (!icon->window) return TRUE; /* already hidden */

	DestroyWindow(icon->window);
	DestroyWindow(icon->tooltip);
	icon->window = 0;
	icon->tooltip = 0;
	return TRUE;
	}

	/* make the icon visible */
	static BOOL show_icon( struct tray_icon *icon )
	{
	RECT rect;
	static BOOL class_registered;
	Window systray_window;
	Display *display = thread_display();

	TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );

	if (icon->window) return TRUE; /* already shown */

	if (!class_registered)
	{
	WNDCLASSEXW class;

	ZeroMemory( &class, sizeof(class) );
	class.cbSize = sizeof(class);
	class.lpfnWndProc = tray_wndproc;
	class.hCursor = LoadCursorW( 0, (LPCWSTR)IDC_ARROW );
	class.lpszClassName = tray_classname;
	class.style = CS_HREDRAW \| CS_VREDRAW \| CS_DBLCLKS;

	if (!RegisterClassExW(&class) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
	{
	WINE_ERR( "Could not register tray window class\n" );
	return FALSE;
	}
	class_registered = TRUE;
	}

	if (!(systray_window = get_systray_selection_owner( display ))) return FALSE;

	rect.left = 0;
	rect.top = 0;
	rect.right = GetSystemMetrics( SM_CXSMICON ) + 2*ICON_BORDER;
	rect.bottom = GetSystemMetrics( SM_CYSMICON ) + 2*ICON_BORDER;

	icon->window = CreateWindowExW( WS_EX_APPWINDOW, tray_classname, NULL, WS_CLIPSIBLINGS \| WS_POPUP,
	CW_USEDEFAULT, CW_USEDEFAULT,
	rect.right - rect.left, rect.bottom - rect.top,
	NULL, NULL, NULL, icon );
	create_tooltip( icon );
	dock_systray_window( display, icon->window, systray_window );
	SetTimer( icon->window, 1, 1000, NULL );
	ShowWindow( icon->window, SW_SHOWNA );
	return TRUE;
	}

	/* Modifies an existing icon record */
	static BOOL modify_icon( struct tray_icon icon, NOTIFYICONDATAW nid )
	{
	TRACE( "id=0x%x hwnd=%p flags=%x\n", nid->uID, nid->hWnd, nid->uFlags );

	if ((nid->uFlags & NIF_STATE) && (nid->dwStateMask & NIS_HIDDEN))
	{
	if (nid->dwState & NIS_HIDDEN) hide_icon( icon );
	else show_icon( icon );
	}

	if (nid->uFlags & NIF_ICON)
	{
	if (icon->image) DestroyIcon(icon->image);
	icon->image = CopyIcon(nid->hIcon);
	if (icon->window)
	{
	struct x11drv_win_data *data = X11DRV_get_win_data( icon->window );
	if (data) XClearArea( gdi_display, data->client_window, 0, 0, 0, 0, True );
	}
	}

	if (nid->uFlags & NIF_MESSAGE)
	{
	icon->callback_message = nid->uCallbackMessage;
	}
	if (nid->uFlags & NIF_TIP)
	{
	lstrcpynW(icon->tiptext, nid->szTip, sizeof(icon->tiptext)/sizeof(WCHAR));
	icon->tiptitle[0] = 0;
	if (icon->tooltip) update_tooltip_text(icon);
	}
	if (nid->uFlags & NIF_INFO && nid->cbSize >= NOTIFYICONDATAA_V2_SIZE)
	{
	lstrcpynW(icon->tiptext, nid->szInfo, sizeof(icon->tiptext)/sizeof(WCHAR));
	lstrcpynW(icon->tiptitle, nid->szInfoTitle, sizeof(icon->tiptitle)/sizeof(WCHAR));
	if (icon->tooltip) update_tooltip_text(icon);
	}
	return TRUE;
	}

	/* Adds a new icon record to the list */
	static BOOL add_icon(NOTIFYICONDATAW *nid)
	{
	struct tray_icon *icon;

	WINE_TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);

	if ((icon = get_icon(nid->hWnd, nid->uID)))
	{
	WINE_WARN("duplicate tray icon add, buggy app?\n");
	return FALSE;
	}

	if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
	{
	WINE_ERR("out of memory\n");
	return FALSE;
	}

	ZeroMemory(icon, sizeof(struct tray_icon));
	icon->id = nid->uID;
	icon->owner = nid->hWnd;

	list_add_tail(&icon_list, &icon->entry);

	/* if hidden state is specified, modify_icon will take care of it */
	if (!((nid->uFlags & NIF_STATE) && (nid->dwStateMask & NIS_HIDDEN)))
	show_icon( icon );

	return modify_icon( icon, nid );
	}

	/* delete tray icon window and icon structure */
	static BOOL delete_icon( struct tray_icon *icon )
	{
	hide_icon( icon );
	list_remove( &icon->entry );
	DestroyIcon( icon->image );
	HeapFree( GetProcessHeap(), 0, icon );
	return TRUE;
	}


	/***********************************************************************
	* wine_notify_icon (X11DRV.@)
	*
	* Driver-side implementation of Shell_NotifyIcon.
	*/
	int CDECL wine_notify_icon( DWORD msg, NOTIFYICONDATAW *data )
	{
	BOOL ret = FALSE;
	struct tray_icon *icon;

	switch (msg)
	{
	case NIM_ADD:
	if (!get_systray_selection_owner( thread_init_display() ))
	return -1; /* fall back to default handling */
	ret = add_icon( data );
	break;
	case NIM_DELETE:
	if ((icon = get_icon( data->hWnd, data->uID ))) ret = delete_icon( icon );
	break;
	case NIM_MODIFY:
	if ((icon = get_icon( data->hWnd, data->uID ))) ret = modify_icon( icon, data );
	break;
	default:
	FIXME( "unhandled tray message: %u\n", msg );
	break;
	}
	return ret;
	}