module link_cont
  interface
    subroutine I_FileOpenCont (ncase,ndata,lpool,xfiles)
      integer(kind=4) :: ncase
      integer(kind=4) :: ndata
      integer(kind=4) :: lpool
      character(len=40), dimension(10) :: xfiles
    endsubroutine I_FileOpenCont
  endinterface
endmodule link_cont

program s
  use link_cont
  use Kernel32
  use , intrinsic :: ISO_C_Binding !// 标准模块
  implicit none
  type(C_FUNPTR) :: C_FileOpenCont !// C 语言指向函数的指针
  procedure(I_FileOpenCont) , pointer :: FileOpenCont !// fortran 指向函数的指针
  !<-------------------------------------------------------------------------------------------------------------------------------
  integer(kind=4)                  :: add
  integer(kind=4)                  :: hwnd
  integer(kind=4)                  :: n_case
  integer(kind=4)                  :: n_data
  integer(kind=4)                  :: lpool
  character(len=40), dimension(10) :: c_files
  logical                          :: fail
  logical                          :: syslink
  !<-------------------------------------------------------------------------------------------------------------------------------
  hwnd = LoadLibrary('control.dll'//c_null_char)
  if (hwnd <= 0) then
    fail    = .true.
    syslink = .false.
    write(*,*) 'DLL Loading failure because control.dll was not found'
    read(*,*)
  else
    write(*,*) 'Succeed Contempt DLL (control.dll) Loading'
    add     = GetProcAddress(hWnd,'FILEOPENCONT'//c_null_char) !//获得地址（整数）
    C_FileOpenCont = transfer( add , C_FileOpenCont ) !//把整数的地址转换成 C 指针
    call C_F_PROCPOINTER( C_FileOpenCont , FileOpenCont ) !//把C指针转换成 fortran 指针
    call FileOpenCont(n_case,n_data,lpool,c_files)
    syslink=FreeLibrary(hwnd)
  endif
end program s