Hi Nigel, Thanks for the prompt reply. Of course I tried this line and the compiler aborted with the error message: Delphi-style classes must be allocated with 'new'
Then I tried TImageEnProc *proc = new TImageEnProc; This works with TIEBitmap, for example, but not with TImageEnProc. The compiler aborted with: no matching constructor for initialization of 'Imageenproc::TImageEnProc'
Next I tried: TImageEnProc *proc = new TImageEnProc(NULL); Compiler refused work and responded: call to constructor of 'Imageenproc::TImageEnProc' is ambiguous
Now I've tried something else: TIEBitmap *Quelle = new TIEBitmap; TImageEnProc *proc = new TImageEnProc(Quelle); And so it finally worked!
Should that be mentioned in the help for the class?