Deactivate active window in ShowWindow(,SW_HIDE).

dlls/user/tests/msg.c

@@ -2939,6 +2939,7 @@ static void test_messages(void)
     SetWindowPos(hwnd, 0,0,0,0,0, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE);
     ok_sequence(WmSWP_HideOverlappedSeq, "SetWindowPos:SWP_HIDEWINDOW:overlapped", FALSE);
     ok(!IsWindowVisible(hwnd), "window should not be visible at this point\n");
+    ok(GetActiveWindow() == hwnd, "window should still be active\n");
 
     /* test WM_SETREDRAW on a visible top level window */
     ShowWindow(hwnd, SW_SHOW);

dlls/x11drv/winpos.c

@@ -934,7 +934,9 @@ BOOL X11DRV_ShowWindow( HWND hwnd, INT cmd )
         case SW_HIDE:
             if (!wasVisible) return FALSE;
             showFlag = FALSE;
-            swp |= SWP_HIDEWINDOW | SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER;
+            swp |= SWP_HIDEWINDOW | SWP_NOSIZE | SWP_NOMOVE;
+            if (hwnd != GetActiveWindow())
+                swp |= SWP_NOACTIVATE | SWP_NOZORDER;
 	    break;
 
 	case SW_SHOWMINNOACTIVE: