@@ -301,6 +301,8 @@ uint32 GetCompanyInfo(CompanyID owner, c
CommandCost GetErrorMessageFromLocationCallbackResult(uint16 cb_res, uint32 grfid, StringID default_error);
void ErrorUnknownCallbackResult(uint32 grfid, uint16 cbid, uint16 cb_res);
bool ConvertBooleanCallback(const struct GRFFile *grffile, uint16 cbid, uint16 cb_res);
bool Convert8bitBooleanCallback(const struct GRFFile *grffile, uint16 cbid, uint16 cb_res);
/**
* Data related to the handling of grf files.