Subject Re: modal form From Mervyn Bick <invalid@invalid.invalid> Date Thu, 20 Aug 2020 11:18:47 +0200 Newsgroups dbase.getting-started On 2020-08-19 23:19, Gaetano wrote: > > Hi Lee, > > I tried both codes, the super::readModal() option works, but "return > readModal()" produces the error "too few arguments, expecting at least > 1" while opening the form in the navigator pane or during compilation. readModal() is a built-in  method of a form object.  As one can have many instances of a form object in memory, each, of course, with it's own name, dBASE needs to know which instance's readModal() method you want to execute. If you don't use the :: scope resolution operator dBASE will execute the named method (i.e a function)  within the calling function.     function readModal       //your own code        return readModal() effectively means the function is trying to execute itself in a never ending loop hence the error message. When a built-in method has been overwritten the new method (function) needs to somehow call the built-in method otherwise the functionality of the method is lost.  The scope resolution operator takes care of this. return FORM::readModal() (which is the code the designer will stream out if you overwrite a form's readModal method) or return YOURFORMNAMEFORM::readModal()  (i.e using the actual classname of your form) will execute the method that would have been executed if you had not overwritten the readModal() method.  If your form has been sub-classed from a custom form it is the custom form's readModal() method that will be called which in turn will call the baseclass method which actually does all the work. return super::readModal() bypasses any underlying custom classes and calls the built-in method() directly. If you build your overwritten readModal() method to create a flag into a custom class every form you build based on the custom form will inherit that code.  If, say, for one specific form you don't want the flag created then overwrite the readModal() method in the form but use return super::readModal().  This will bypass the custom form and use the "plain vanilla" version of readModal() built into dBASE. Mervyn.