Changed the return value of GetKeyboardState and SetKeyboardState from
VOID to BOOL.

diff --git a/include/winuser.h b/include/winuser.h
index 6115637..a85b499 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -2883,7 +2883,7 @@
 /* Declarations for functions that are the same in Win16 and Win32 */
 VOID        WINAPI EndMenu(void);
 DWORD       WINAPI GetDialogBaseUnits(void);
-VOID        WINAPI GetKeyboardState(LPBYTE);
+BOOL        WINAPI GetKeyboardState(LPBYTE);
 DWORD       WINAPI GetMenuCheckMarkDimensions(void);
 LONG        WINAPI GetMessageExtraInfo(void);
 DWORD       WINAPI GetMessagePos(void);
@@ -2892,7 +2892,7 @@
 ATOM        WINAPI GlobalDeleteAtom(ATOM);
 DWORD       WINAPI OemKeyScan(WORD);
 BOOL        WINAPI ReleaseCapture(void);
-VOID        WINAPI SetKeyboardState(LPBYTE);
+BOOL        WINAPI SetKeyboardState(LPBYTE);
 VOID        WINAPI WaitMessage(VOID);
 
 
diff --git a/windows/input.c b/windows/input.c
index d55a51b..1738224 100644
--- a/windows/input.c
+++ b/windows/input.c
@@ -460,7 +460,7 @@
  * keyboard-input message.  This function retrieves the state of the keyboard
  * at the time the input message was generated.  (SDK 3.1 Vol 2. p 387)
  */
-VOID WINAPI GetKeyboardState(LPBYTE lpKeyState)
+BOOL WINAPI GetKeyboardState(LPBYTE lpKeyState)
 {
     TRACE_(key)("(%p)\n", lpKeyState);
     if (lpKeyState != NULL) {
@@ -469,12 +469,14 @@
 	QueueKeyStateTable[VK_RBUTTON] = MouseButtonsStates[2] ? 0x80 : 0;
 	memcpy(lpKeyState, QueueKeyStateTable, 256);
     }
+
+    return TRUE;
 }
 
 /**********************************************************************
  *          SetKeyboardState      (USER.223)(USER32.484)
  */
-VOID WINAPI SetKeyboardState(LPBYTE lpKeyState)
+BOOL WINAPI SetKeyboardState(LPBYTE lpKeyState)
 {
     TRACE_(key)("(%p)\n", lpKeyState);
     if (lpKeyState != NULL) {
@@ -483,6 +485,8 @@
 	MouseButtonsStates[1] = (QueueKeyStateTable[VK_MBUTTON] != 0);
 	MouseButtonsStates[2] = (QueueKeyStateTable[VK_RBUTTON] != 0);
     }
+
+    return TRUE;
 }
 
 /**********************************************************************