src/java.desktop/windows/native/libawt/windows/awt_Robot.cpp

*** 333,343 ****
          // no equivalent Windows key found for given Java keycode
          JNU_ThrowIllegalArgumentException(env, "Invalid key code");
      } else {
          // get the scancode from the virtual key
          scancode = ::MapVirtualKey(vkey, 0);
!         if (vkey == VK_RMENU) {
              dwFlags |= KEYEVENTF_EXTENDEDKEY;
          }
          keybd_event(vkey, scancode, dwFlags, 0);
      }
  }
--- 333,353 ----
          // no equivalent Windows key found for given Java keycode
          JNU_ThrowIllegalArgumentException(env, "Invalid key code");
      } else {
          // get the scancode from the virtual key
          scancode = ::MapVirtualKey(vkey, 0);
!         if (vkey == VK_RMENU
!                  || vkey == VK_DELETE
!                  || vkey == VK_INSERT
!                  || vkey == VK_NEXT
!                  || vkey == VK_PRIOR
!                  || vkey == VK_HOME
!                  || vkey == VK_END
!                  || vkey == VK_LEFT
!                  || vkey == VK_RIGHT
!                  || vkey == VK_UP
!                  || vkey == VK_DOWN) {
              dwFlags |= KEYEVENTF_EXTENDEDKEY;
          }
          keybd_event(vkey, scancode, dwFlags, 0);
      }
  }