VC++ MessageBox的使用

void Button_Click(System::Object ^sender, System::EventArgs ^e)
{
void * p = Handle.ToPointer();
HWND hwnd = ( HWND )p;
if (::IsWindow(hwnd))
System::Windows::Forms::MessageBox::Show(L "是的" );
else
System::Windows::Forms::MessageBox::Show(L "不是" );

System::String ^ stringObject = sender->ToString();
pin_ptr < const wchar_t > wszString = PtrToStringChars(stringObject);

::MessageBoxW(hwnd, ( LPCWSTR )wszString, L "info" , MB_OK);
}