Question

I have some problems trying to convert an EventHandler to a MouseEventHandler.

System::EventHandler^ method = gcnew System::EventHandler(this, &MainForm::Exit_Action);
if (e->trigger == "onmousedown") {
     c->MouseDown += (MouseEventHandler^)(method); // error

(this refer to a System::Windows::Forms::Form class)

Is there a method to do the trick ?

Answer 1

Well, EventHandler is not a MouseEventHandler (they are even not in the same inheritance hierarchy), so this shouldn’t work.

Why not create a new (well, gcnew) MouseEventHandler inside if? It’s cheap 🙂

(In C# you usually create an implicit lambda by using something like c.MouseDown += Exit_Action; but I don’t know if there’s a syntax like that in C++/CLI.)