创建&调用Dll窗体

Dll代码

******************************************************************************************************************************************

library Dlltest;

{ 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,Forms,
  Classes,
  FromDll in 'FromDll.pas' {FormDll};

{$R *.res}
function GetDllForm(aa,ab:string): TForm; stdcall; export;
begin
  Result := formDll;
  FormDll.edt1.Text:='edt1内容：'+aa+'   &&   '+'edt2内容：'+ab;
end;
exports
 GetDllForm;
begin
end.

DllForm代码

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unit FromDll;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TFormDll = class(TForm)
    Button1: TButton;
    edt1: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  FormDll: TFormDll;
implementation

{$R *.dfm}

procedure TFormDll.Button1Click(Sender: TObject);
begin
  MessageBox(0, '成功调用Dll窗体', 'DllInfo', 0);
end;
initialization
  begin
    FormDll := TFormDll.Create(Application);
  end;
finalization
  begin
    FormDll.Free;
  end;
end.

usesDllFormMain代码 调用Dll窗体

******************************************************************************************************************************************

unit usesDllFrmPas;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    edt1: TEdit;
    edt2: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
function GetDllForm(aa,ab:string):TForm; stdcall;
implementation

{$R *.dfm}
function GetDllForm(aa,ab:string):TForm;external 'DllTest.dll';//静态调用

procedure TForm1.Button1Click(Sender: TObject);
var
  tf:TForm;
begin
  tf:=GetDllForm(edt1.Text,edt2.Text);
  tf.ShowModal;
end;

end.

var
  h: THandle;
  TF: TForm;
  Tabc: function(aa, bb: string): TForm; stdcall;{动态调用声明函数原型}
begin
  h := LoadLibrary('DllTest.dll');               {获取Dll操作句柄}
  if h > 32 then
  begin
    @Tabc := GetProcAddress(h, 'GetDllForm');    {获取函数指针（地址）}
    tf := Tabc(edt1.text, edt2.text);
    tf.ShowModal;
    FreeLibrary(h);
  end
  else
  ShowMessage('not Find DllTest.dll');
end;