WNDPROC 委托

public delegate int WNDPROC(
	IntPtr hWnd,
	int msg,
	int wParam,
	int lParam
)

Public Delegate Function WNDPROC ( 
	hWnd As IntPtr,
	msg As Integer,
	wParam As Integer,
	lParam As Integer
) As Integer

type WNDPROC = 
    delegate of 
        hWnd : IntPtr * 
        msg : int * 
        wParam : int * 
        lParam : int -> int