- Patch by Yuriy Sidorov <jura at cp-lab.com> , NtUserToUnicodeEx should return zero if key in lpKeyState array is not pressed.

svn path=/trunk/; revision=35117

reactos/subsystems/win32/win32k/ntuser/keyboard.c

@@ -711,6 +711,10 @@ NtUserToUnicodeEx(
       DPRINT1( "Couldn't copy key state from caller.\n" );
       RETURN(0);
    }
+   
+   /* Virtual code is correct and key is pressed currently? */
+   if (wVirtKey < 0x100 && KeyStateBuf[wVirtKey] & KS_DOWN_BIT)
+   {
       OutPwszBuff = ExAllocatePoolWithTag(NonPagedPool,sizeof(WCHAR) * cchBuff, TAG_STRING);
       if( !OutPwszBuff )
       {
@@ -730,6 +734,9 @@ NtUserToUnicodeEx(
 
       MmCopyToCaller(pwszBuff,OutPwszBuff,sizeof(WCHAR)*cchBuff);
       ExFreePool(OutPwszBuff);
+   }
+   else
+      ret = 0;
 
    RETURN(ret);