| The following functions are classless. They work generally on lists or symbolic atoms, which in wwlisp are not objects instantiated from classes. Classless functions can be of type subr, fsubr, expr, fexpr or macro. In wwlisp, the arguments of some functions are placed differently than in other lisps and dialects, because the first argument of any function determines the class of the function, and if this argument is classless (ie evaluates to a symbolic atom or a list), then a classless function will be called instead of a method of the class of the argument. |
| Function Type | subr |
| Arguments | optional string |
| Return Value | a string or nil |
| Description | opens a dialog box for directory selection, and returns the selected directory name; |
| Example | (getdirectorydialog "mydir") |
| Function Type | subr |
| Arguments | optional string |
| Return Value | a string or nil |
| Description | opens a dialog box for file selection and opening, and returns the selected file name; the argument is a filter for file selection |
| Example | (openfilenamedialog "*.lsp") |
| Function Type | subr |
| Arguments | optional string |
| Return Value | a string or nil |
| Description | opens a dialog box for filename selection and creation or saving, and returns the selected file name; the argument is a filter for file selection |
| Example | (savefilenamedialog "*.lsp") |