[fpc-pascal] Type-casting a class variable

[Adriaan van Os]

Suppose I have a

	var myClass: TClass

and (for example) a

	class function TWindow.CreateNewWindow( ....)

Now I want to call CreateNewWindow for var myClass. Of course, depending on the class, 
CreateNewWindow will behave different. Type-casting myClass to TWindow crashes (in my setup). And 
even if it worked, wouldn't it loose the class information ?

Of course, by adding an extra parameter of type TClass to CreateNewWindow, the issue can be solved. 
But that's far from elegant.

How to solve this ? Anything I missed ?

Regards,

Adriaan van Os