From 260c446b56c7e26775df670fef6004870d1f36a5 Mon Sep 17 00:00:00 2001
From: Steven Edwards <winehacker@gmail.com>
Date: Wed, 1 Aug 2007 02:06:27 -0400
Subject: [PATCH] Implement LockWorkStation using xdg-screensaver
---
 dlls/user32/user32.spec     |    2 +-
 dlls/user32/user_main.c     |   14 ++++++++++++++
 programs/explorer/desktop.c |   31 +++++++++++++++++++++++++++++++
 3 files changed, 46 insertions(+), 1 deletions(-)

diff --git a/dlls/user32/user32.spec b/dlls/user32/user32.spec
index 8bf9ad1..452e380 100644
--- a/dlls/user32/user32.spec
+++ b/dlls/user32/user32.spec
@@ -475,7 +475,7 @@ # @ stub LoadKeyboardLayoutEx
 @ stdcall LockSetForegroundWindow (long)
 @ stub LockWindowStation
 @ stdcall LockWindowUpdate(long)
-@ stub LockWorkStation
+@ stdcall LockWorkStation()
 @ stdcall LookupIconIdFromDirectory(ptr long)
 @ stdcall LookupIconIdFromDirectoryEx(ptr long long long long)
 @ stub MBToWCSEx
diff --git a/dlls/user32/user_main.c b/dlls/user32/user_main.c
index e572220..09255f9 100644
--- a/dlls/user32/user_main.c
+++ b/dlls/user32/user_main.c
@@ -318,3 +318,17 @@ BOOL WINAPI ExitWindowsEx( UINT flags, D
     CloseHandle( pi.hThread );
     return TRUE;
 }
+
+/***********************************************************************
+ *              LockWorkStation (USER32.@)
+ */
+BOOL WINAPI LockWorkStation( void )
+{
+    HWND hwnd;
+    int retval;
+
+    hwnd = GetDesktopWindow();
+    retval = SendMessageW( hwnd, 0xC000, 0, 0 );
+
+    return retval;
+}
diff --git a/programs/explorer/desktop.c b/programs/explorer/desktop.c
index 7f2e23f..cef1bff 100644
--- a/programs/explorer/desktop.c
+++ b/programs/explorer/desktop.c
@@ -18,7 +18,15 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include "config.h"
+#include "wine/port.h"
+
+#include <ctype.h>
 #include <stdio.h>
+#include <string.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 
 #define OEMRESOURCE
 
@@ -35,6 +43,26 @@ extern HANDLE __wine_make_process_system
 
 static BOOL using_root;
 
+int lock_desktop( void )
+{
+    /* FIXME: do something here about running in desktop mode */
+    int retcode;
+    const char *argv[3];
+
+    argv[0] = "xdg-screensaver";
+    argv[1] = "lock";
+    argv[2] = NULL;
+
+    retcode=spawnvp( _P_WAIT, "xdg-screensaver", argv );
+
+    if (retcode!=0)
+    {
+        WINE_ERR("%s returned %d\n",(const char*)argv,retcode);
+        return retcode;
+    }
+    return TRUE;
+}
+
 /* window procedure for the desktop window */
 static LRESULT WINAPI desktop_wnd_proc( HWND hwnd, UINT message, WPARAM wp, LPARAM lp )
 {
@@ -69,6 +97,9 @@ static LRESULT WINAPI desktop_wnd_proc( 
         }
         return 0;
 
+    case 0xC000:
+        return lock_desktop();
+
     default:
         return DefWindowProcW( hwnd, message, wp, lp );
     }
-- 
1.4.1