#using <mscorlib.dll>
using namespace System;
using namespace System::Runtime::InteropServices;
__gc struct S
{
[DllImport("user32", CharSet=CharSet::Ansi)]  //通過P/Invoke導(dǎo)入
static int MessageBox(void* hWnd,
                          String* pText,
                          String* pCaption,
                          unsigned int uType);
};
__delegate int MyMessageBox (void* hWnd,  // 代理的聲明
                          String * pText,
                          String * pCaption,
                          unsigned int uType);
int main()
{ 
   MyMessageBox* myb = new MyMessageBox(0, &S::MessageBox); // 實(shí)例化
   String * pText = S"Hello, World!";
   String * pCaption = S"Pinvoke Test";
   myb(0, pText, pCaption, 0); // 通過代理myb調(diào)用MessageBox調(diào)用Windows API函數(shù)
}