-const String ARG_KEY_INSTANCE_ID = L"_InstanceId";
-const String ARG_KEY_PROVIDER_NAME = L"_ProviderName";
-const String ARG_KEY_USER_INFO = L"_UserInfo";
-const String ARG_KEY_WIDTH = L"_Width";
-const String ARG_KEY_HEIGHT = L"_Height";
+const wchar_t ARG_KEY_INSTANCE_ID[] = L"_InstanceId";
+const wchar_t ARG_KEY_PROVIDER_NAME[] = L"_ProviderName";
+const wchar_t ARG_KEY_USER_INFO[] = L"_UserInfo";
+const wchar_t ARG_KEY_X[] = L"_X";
+const wchar_t ARG_KEY_Y[] = L"_Y";
+const wchar_t ARG_KEY_WIDTH[] = L"_Width";
+const wchar_t ARG_KEY_HEIGHT[] = L"_Height";
+const wchar_t ARG_KEY_POPUP_WIDTH[] = L"_PopupWidth";
+const wchar_t ARG_KEY_POPUP_HEIGHT[] = L"_PopupHeight";
+const wchar_t ARG_KEY_ARGUMENT[] = L"_Argument";
+const wchar_t ARG_KEY_EVENT_TYPE[] = L"_EventType";
+const wchar_t ARG_KEY_TIME_STAMP[] = L"_TimeStamp";