• Delphi 开发ActiveX控件(非ActiveForm)


      Q:为什么不采用ActiveForm工程?通过它可以快速开发带窗体控件,创建过程也非常简单(都不用考虑安全接口问题),很省事!

      A:如果要实现的功能用不上窗口,而一个带窗口的空程序就500多KB,不便于ActiveX的发布,本实现方法可降到100多KB,CAB打包后只有几十KB; 好吧,我承认我有点体积控。

    1. 新建一个ActiveX Library工程

      

    2. 在该工程中新建一个 Automation Object对象

      

    填写类名

      

    3.建一个测试方法(Test)

      

      

     向导会自动生成相关代码!

    注意:

      如果需要发布到Internet,还需要实现一个IObjectSafety接口,标记脚本是安全的,运行时才不会被IE阻止。如果想在线安装ActiveX控件还需要数字证书签名后才可以。

    代码:

    {
     * created by HouSoft
     * 2011/11/18
    }
    unit AXDemo_u;
    
    {$WARN SYMBOL_PLATFORM OFF}
    
    interface
    
    uses
      ComObj, ActiveX, AXDemo_TLB, StdVcl,
      Windows;
    
    type
      TAXDemoCtrl = class(TAutoObject, IAXDemoCtrl, IObjectSafety)
      private
        FObjectSafetyFlags: DWORD;
        { 实现IObjectSafety 接口用于将控件标记为安全,否则IE加载时可能会被阻止!}
        function GetInterfaceSafetyOptions(const IID: TIID; pdwSupportedOptions,
          pdwEnabledOptions: PDWORD): HResult; stdcall;
        function SetInterfaceSafetyOptions(const IID: TIID; dwOptionSetMask,
          dwEnabledOptions: DWORD): HResult; stdcall;
      protected
        procedure Test(const Msg: WideString); safecall;
      end;
    
    implementation
    
    uses ComServ;
    
    function TAXDemoCtrl.GetInterfaceSafetyOptions(const IID: TIID;
      pdwSupportedOptions, pdwEnabledOptions: PDWORD): HResult;
    var
      Unk               : IUnknown;
    begin
      if (pdwSupportedOptions = nil) or (pdwEnabledOptions = nil) then
      begin
        Result := E_POINTER;
        Exit;
      end;
      Result := QueryInterface(IID, Unk);
      if Result = S_OK then
      begin
        pdwSupportedOptions^ := INTERFACESAFE_FOR_UNTRUSTED_CALLER or
          INTERFACESAFE_FOR_UNTRUSTED_DATA;
        pdwEnabledOptions^ := FObjectSafetyFlags and
          (INTERFACESAFE_FOR_UNTRUSTED_CALLER or INTERFACESAFE_FOR_UNTRUSTED_DATA);
      end
      else
      begin
        pdwSupportedOptions^ := 0;
        pdwEnabledOptions^ := 0;
      end;
    end;
    
    function TAXDemoCtrl.SetInterfaceSafetyOptions(const IID: TIID;
      dwOptionSetMask, dwEnabledOptions: DWORD): HResult;
    var
      Unk               : IUnknown;
    begin
      Result := QueryInterface(IID, Unk);
      if Result <> S_OK then
        Exit;
      FObjectSafetyFlags := dwEnabledOptions and dwOptionSetMask;
    end;
    
    procedure TAXDemoCtrl.Test(const Msg: WideString);
    begin
      MessageBox(GetActiveWindow,
        PChar(string(Msg)),
        'ActiveX测试',
        0);
    end;
    
    initialization
      TAutoObjectFactory.Create(ComServer, TAXDemoCtrl, Class_AXDemoCtrl,
        ciMultiInstance, tmApartment);
    end.
    

    部署测试:

    <html>
    <head>
    <title>ActiveX Test Page</title>
    </head>
    <H1>ActiveX Test Page</H1>
    <hr>
    <p>
    <body>
    <object name="AXDemo" classid="clsid:C7C16439-AFF0-48A4-A22D-4655400FC4BE" codebase="AXDemo.cab#version=1,0,0,0">
    </object>

    <script>
    function Test(){
    try
    {
    AXDemo.Test(
    'Hello World!');
    }
    catch(e){
    alert(
    'ActiveX测试失败!\r\n'+e.description);
    }
    }
    </script>

    <a href="javascript:Test()">Hello (点我)</a>
    </body>
    </html>

    推荐:

      CAB打包工具可以选择使用:数字签名工具

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  • 原文地址:https://www.cnblogs.com/yryz/p/2296429.html
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