What is Project::Subclass::NativeWindowsEvent and how to use it?

[chrisliando]

(1)

What is Project::Subclass::NativeWindowsEvent and how to use it?

 

I've got codes in old C++ syntax and I want to change it to the new one.

 

// ===================================================================

 

// NativeWindow Subclassing

// ===================================================================

ref class Subclass : public System::Windows::Forms::NativeWindow

{

public:

delegate void WindowsEventHandler(Object ^sender, Message ^uMsg);

event WindowsEventHandler ^NativeWindowsEvent;

 

Subclass(IntPtr pWindowHandle)

{

this->AssignHandle(pWindowHandle);

}

 

void SendWndProc( System::Windows::Forms::Message ^uMsg )

{

//super::WndProc(uMsg);

}

 

protected: void WndProc( System::Windows::Forms::Message ^uMsg )

{

//__super::WndProc(uMsg);

if ( Project::Subclass::NativeWindowsEvent != nullptr )

Project::Subclass::NativeWindowsEvent(this, uMsg);

}

};

 

 

When I compiled it, the error message was:

 

Error C3918: usage requires 'Project::Subclass::NativeWindowsEvent' to be a data member

see declaration of 'Project::Subclass::NativeWindowsEvent'

 

How to change it to the new C++ syntax?

 

(2)

 

What is "__super" in old C++ syntax converted to new C++ syntax?

 

Thank you very much.

[PlausiblyDamp]

C++ (managed or otherwise) isn't really my strong point, however I think the NativeWindowsEvent is a delegate of type

void xxxxx(ref Message Msg), other than that I'm struggling with the c++ syntax. Have you tried declaring a member of type NativeWindowsEvent?

[Machaira]

/me wonders why anyone is using managed C++ instead of C#

 

:confused: :(

[chrisliando]

Yes, I think I have to do like you said, "declaring a member of type NativeWindowsEvent". I guess it will fix the error. But I don't understand how to declare a member of type..

Can you help me, please?

 

This one is not a declaration?

event WindowsEventHandler ^NativeWindowsEvent;

 

Thank you very much..