Delphi 开发ActiveX控件(非ActiveForm)
2011-12-23 16:28 一人游走 阅读(2873) 评论(1) 编辑 收藏 举报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