Hi Hilmar,

Check out my tool in the downloads NewClass

Glenn
>>Have come across an ancient application whereby none of the base classes were subclassed.
>>
>>I remember reading somewhere of a technique whereby you could effectively subclass the original 'textbox', 'listbox', etc, classes without replacing them in the forms.
>>
>>Could anyone advise please?
>>
>>TIA
>>
>>Dennis
>
>I haven't read anything, but I suppose you could open the metafiles:
>
>

>use MyForm.scx
>

>
>and then do some REPLACE:
>
>

>replace class with "cTextBox", classloc with "MyDerivedClasses.vcx";
>  for lower(class) = "textbox"
>

>
>Repeat for other base classes. Repeat in a loop for all forms and form classes.
>
>CAUTION: Make backup first. Replacing metadata can lead to unexpected results sometimes.
>
>HTH, Hilmar.