I've searched a lot and the nearest thing I've found is this. The question is exactly about what I want to code, but there's only one vague answer. Searched code.google.com for GiveFeedback implementations, but none about what I want. Any idea, please?
views:
32answers:
3
                +1 
                A: 
                
                
              
            Assuming this is C# / Windows Forms, if you use the built-in API for drag & drop, then you get a "dragging" mouse cursor for free. That is really the easiest solution.
                  Justin Ethier
                   2010-07-26 22:13:12
                
              
                
                A: 
                
                
              
            Sorry, I really didn't tell platform/language; indeed, it is C# / Windows Forms / .NET 2.0
Can mouse cursor have any size? For instance, if I'm dragging a 400px wide textbox, can mouse cursor be a semi-transparent copy of it?
                  Alexandre
                   2010-07-26 22:27:37