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星期二七月 17 16:20:19 HKT 2007

dll，很简单，2个函数代码如下：
library Project1;

{ Important note about DLL memory management: ShareMem must be the
  first unit in your library's USES clause AND your project's (select
  Project-View Source) USES clause if your DLL exports any procedures or
  functions that pass strings as parameters or function results. This
  applies to all strings passed to and from your DLL--even those that
  are nested in records and classes. ShareMem is the interface unit to
  the BORLNDMM.DLL shared memory manager, which must be deployed along
  with your DLL. To avoid using BORLNDMM.DLL, pass string information
  using PChar or ShortString parameters. }

uses
  SysUtils,
  Classes;

{$R *.RES}
function PlusNum(x,y:integer):integer;stdcall;
begin
     result:=x+y;
end;

function MinusNum(x,y:integer):integer;stdcall;
begin
     result:=x-y;
end;

exports
PlusNum index 1,
MinusNum index 2;

begin
end.

在python shell里这样调用
mydll=ctypes.cdll.LoadLibrary('project1.dll')
mydll.PlusNum(1,2)

提示出错，请问该如何调用？
Traceback (most recent call last):
  File "", line 1, in 
ValueError: Procedure called with not enough arguments (8 bytes missing) or
wrong calling convention
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标题：[python-chinese] 请教cpytes如何调用自定义的dll