Events and Delegate

Ok, it's days I'm in trouble with this... it should be easy!

Say we have to do a class (say Windows) wich wraps EnumWindows (DllImpors[(user32.dll)])

This class have just to raise the event Enumerate for each call of EnumWindows to its callback.

I've no idea about how to do it! :confused: :confused:

PHP Code:

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public class Windows

        [DllImport("user32.dll")] private static extern 
              int EnumWindows(EnumWindowsProc ewp, int lParam); 

        //delegate used for EnumWindows() callback function
        public delegate bool EnumWindowsProc(int hWnd, int lParam);

        public Windows()
        {
            //Declare a callback delegate for EnumWindows() API call
            EnumWindowsProc ewp = new EnumWindowsProc(EvalWindow);
            //Enumerate all Windows
            EnumWindows(ewp, 0);
        }
        //EnumWindows CALLBACK function
        private bool EvalWindow(int hWnd, int lParam)
        {
         // RAISE THE EVENT!
         // HOW???
        }
        
    }
} 


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How to fill the "raising of event"?

Thanx

What parameters do you want the event to have? Here is something basic. You can change it according to your needs.

Code:

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public class Windows

        [DllImport("user32.dll")] private static extern
        int EnumWindows(EnumWindowsProc ewp, int lParam);

        //delegate used for EnumWindows() callback function
        public delegate bool EnumWindowsProc(int hWnd, int lParam);
        public delegate void EnumWindowsHandler(string msg);
        public event EnumWindowsHandler Log;

        public Windows()
        {
            //Declare a callback delegate for EnumWindows() API call
            EnumWindowsProc ewp = new EnumWindowsProc(EvalWindow);
            //Enumerate all Windows
            EnumWindows(ewp, 0);
        }
        //EnumWindows CALLBACK function
        private bool EvalWindow(int hWnd, int lParam)
        {
        // RAISE THE EVENT!
                if(Log != null)
                {
                        Log("Enumeration Complete");
                }
        }
       
    }
}

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