On Monday 08 March 2004 10:46 pm, E. Gladyshev wrote:
I guess I can try something like this: [snip] struct capture_wrapper { signals::slot_type s_;
capture_wrapper( slot s ) : s_(s) {}
bool operator()( event e ) { //how do I make the call? s_(e); //is it ok? return true; //stop propagation } } [snip]
I suggest making capture_wrapper a function object wrapper, not a slot_type (slot_types aren't actually invocable as function objects): template<typename F> struct capture_wrapper { F f; capture_wrapper(F f) : f(f) {} bool operator()(event e) { f(e); return true; } };
I also need an efficient way for accessing slots randomly. For instance some of the Win32 listbox messages have item indexes. I'd like to implement each item as a slot, but I need a way to access the slots based on the item index, so I could call just the right slot. listboxes can contain a lot of items so propagating the messages to all items is not an option.
That'd be a much bigger change to Signals. For one, we'd be breaking the logarithmic complexity of inserting a new element in a particular group. Doug