I need to do some maintenance on an old program made with C++Builder 2006. One of the problems is making Drag&Drop working again, and i've found the solution in various sites (Here the first question i've found here).
But i can't find the ChangeWindowMessageFilter declaration anywere: according to the MS site, this function is available from Windows Vista, so i'm not surprised that it isn't in my winuser.h.
How can i call this function?