Delphi 封装Frame到Dll文件

//Dll文件本身
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
  System.SysUtils,
  System.Classes,
  Unit1 in ‘Unit1.pas‘ {Frame1: TFrame};

{$R *.res}

begin
end.

//Dll封装的Frame单元
unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes,
  Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;

type
  TFrame1 = class(TFrame)
    Button1: TButton;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Frame1: TFrame1;  //此处手动添加

implementation

{$R *.dfm}

procedure TFrame1.Button1Click(Sender: TObject);
begin
  Memo1.Clear;
  Memo1.Lines.Add(‘Hello Delphi! Hello World!‘ + #13#10 + ‘Do You Love This World?‘);
end;

//Frame创建过程
procedure getFrameRun(Parent:THandle); stdcall; export;
begin
  Application.handle := Parent;
  //将容器设为应用程序句柄
  //以非模态创建并显示窗口
  if Frame1 = nil then
  Frame1 := TFrame1.Create(Application);
  Frame1.ParentWindow := Parent;  //将容器设置为父窗口
  Frame1.Show;
end;

//exports
exports
  getFrameRun;

end.


//调用Dll的程序单元
unit Unit2;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls;

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  //dll文件如果不在同一文件夹就加上路径
  procedure getFrameRun(Parent:THandle); stdcall; external ‘Project1.dll‘;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  getFrameRun(Panel1.Handle);  //静态调用创建Frame1
end;

end.