Subject how to handle missing optional arguments in a function From Gaetano <gaetanodd@hotmail.com> Date Fri, 2 Oct 2020 06:26:42 +1000 Newsgroups dbase.getting-started Hi All, I have customized one webclass.cc function to add a text msg to the errorMessage function: Function errorMessage( oErr, cMsg, cTitleBackColor, cTitleTextColor ) if you supply less than the total count of arguments, how does dBase know which argument is supplied and which is omitted? In other words, if I only want to supply cMsg or only a cTitleTextColor but no cTitleBackColor, how to I do that? Is there a standard placeholder for empty arguments? would something like the following work? errorMessage(,"my message",,"red") If I have to test for argument types, how do I reference the "first argument"? Cheers, Gaetano.