C#调用Delphi接口ITest = interface(1/2)

本篇文章主要介绍了"C#调用Delphi接口ITest = interface"，主要涉及到interface,Delphi方面的内容，对于Delphijrs看球网直播吧_低调看直播体育app软件下载_低调看体育直播感兴趣的同学可以参考一下： 首先创建一个delphi的DLL工程library testintfdll;{ Important note about DLL memory manageme...

library testintfdll;

{ 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,
  uintf in 'uintf.pas';

{$R *.res}

exports
  GetImpl;

begin
end.

接下来声明并实现接口

unit uintf;

interface

uses Windows;

type
  ITest = interface
    ['{000A0299-A27A-4D35-9721-419AE6E83869}']
    procedure ShowMessage(msg: PAnsiChar); stdcall;
    function Add(a, b: Integer): Integer; stdcall;
  end;

  TTest = class(TInterfacedObject, ITest)
  protected
    procedure ShowMessage(msg: PAnsiChar); stdcall;
    function Add(a, b: Integer): Integer; stdcall;
  end;

procedure GetImpl(out instance: ITest); stdcall;

implementation

procedure GetImpl(out instance: ITest);
begin
  instance := TTest.Create;
end;

{ TTest }

function TTest.Add(a, b: Integer): Integer;
begin
  Result := a + b;
end;

procedure TTest.ShowMessage(msg: PAnsiChar);
begin
  MessageBox(0, msg, 'title', ID_OK);
end;

end.