[gschneider] 46836: [WIN32K] - Handle keyboard input when no windows are present - Patch by Andrey Ivanov with changes suggested in the bug report See issue #3560 for more details.

Author: gschneider
Date: Sun Apr 11 12:39:20 2010
New Revision: 46836
URL: http://svn.reactos.org/svn/reactos?rev=46836&view=rev
Log:
[WIN32K]
- Handle keyboard input when no windows are present
- Patch by Andrey Ivanov with changes suggested in the bug report
See issue #3560 for more details.
Modified:
    trunk/reactos/subsystems/win32/win32k/ntuser/input.c
Modified: trunk/reactos/subsystems/win32/win32k/ntuser/input.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/input.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/input.c [iso-8859-1] Sun Apr 11 12:39:20
2010
@@ -713,6 +713,7 @@
          for (;NumKeys;memcpy(&KeyInput, &NextKeyInput, sizeof(KeyInput)),
                NumKeys--)
          {
+            PKBL keyboardLayout = NULL;
             lParam = 0;
             IntKeyboardUpdateLeds(KeyboardDeviceHandle,
@@ -783,29 +784,30 @@
             }
             /* Find the target thread whose locale is in effect */
-               FocusQueue = IntGetFocusMessageQueue();
-
-            /* This might cause us to lose hot keys, which are important
-             * (ctrl-alt-del secure attention sequence). Not sure if it
-             * can happen though.
-             */
-            if (!FocusQueue)
-               continue;
+            FocusQueue = IntGetFocusMessageQueue();
+
+            if (FocusQueue)
+            {
+                msg.hwnd = FocusQueue->FocusWindow;
+
+                FocusThread = FocusQueue->Thread;
+                if (FocusThread && FocusThread->Tcb.Win32Thread)
+                {
+                    keyboardLayout =
((PTHREADINFO)FocusThread->Tcb.Win32Thread)->KeyboardLayout;
+                }
+            }
+            if (!keyboardLayout)
+            {
+                keyboardLayout = W32kGetDefaultKeyLayout();
+            }
             msg.lParam = lParam;
-            msg.hwnd = FocusQueue->FocusWindow;
-
-            FocusThread = FocusQueue->Thread;
-
-            if (!(FocusThread && FocusThread->Tcb.Win32Thread &&
-                  ((PTHREADINFO)FocusThread->Tcb.Win32Thread)->KeyboardLayout))
-               continue;
             /* This function uses lParam to fill wParam according to the
              * keyboard layout in use.
              */
             W32kKeyProcessMessage(&msg,
-
((PTHREADINFO)FocusThread->Tcb.Win32Thread)->KeyboardLayout->KBTables,
+                                  keyboardLayout->KBTables,
                                   KeyInput.Flags & KEY_E0 ? 0xE0 :
                                   (KeyInput.Flags & KEY_E1 ? 0xE1 : 0));
@@ -827,6 +829,11 @@
                continue; /* Eat key up motion too */
             }
+            if (!FocusQueue)
+            {
+                /* There is no focused window to receive a keyboard message */
+                continue;
+            }
             /*
              * Post a keyboard message.
              */