Dialog Box Options and Function Descriptions in Help

Let me start with the latter.

For instance:  ReName( ) - the Help from within the Builder 1.0 IDE
doesn't tell you what arguments the function takes.  Is this typical.
How can I find this sort of info out.  This seems too flagrant of an
omission.  BC++ Help is very thorough in this respect.

Now for the Dialog Box Options.  After struggling with writing my
ButtonClick handler, flipping through a half dozen books and the example
in Builder 1.0 help, I finally got it to work.

I first have a ReName_File_Select dialog box appear where the user
selects the file that the user wants to change the name of.  Then I have
a NewName dialog box appear where the user enters the new name for the
previously selected file.  It works.

I selected the options:  PathMustExist and FileMustExist as both true.
But I can still enter a file that does not exist and no flag is thrown.
But of course since the file does not exist it can't possibly be
renamed.

Is this a bug?

If so, will I now have to figure out how to check for this and figure
out how to inform the user?

anth...@ciphile.com