Implement LockWorkstation using xdg-screensaver from explorer

[Steven Edwards]

On 7/27/07, Alexandre Julliard <julliard at winehq.org> wrote:
> Some sort of SendMessage to the desktop window should do the trick.

Please ignore my other email to you. So something like this? Thanks
for Vitaman on IRC for pointing out that spawnvp killed the calling
process.

-- 
Steven Edwards

"There is one thing stronger than all the armies in the world, and
that is an idea whose time has come." - Victor Hugo
-------------- next part --------------
From 260c446b56c7e26775df670fef6004870d1f36a5 Mon Sep 17 00:00:00 2001
From: Steven Edwards <winehacker at 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