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关于ActiveX控件的开发,网上很多例子,昨天也整整研究一天才捋顺了.
网上大部分例子都是js调用控件的方法,由于要实现在html页面"相应"控件的事件,整整折腾一天.
关键点在于 "创建ActiveX控件" 的 第2,和第7
该技术局限性较大,如浏览器端需安装 .net 框架,仅限于IE浏览器.
关于ActiveX的证书及浏览器安装时设置,可参考 http://www.cnblogs.com/weixing/archive/2013/06/28/3161165.html 这也是我看到比较详细的介绍了.
创建ActiveX控件
1.创建一个类库;
2.项目属性-应用程序-程序集信息-"使程序集COM可见"勾上;
3.项目属性-生成-"为COM互操作注册"勾上.(这个折腾一天,否则注册事件不可用);
4.创建接口: IObjectSafety (注意GUID不能变);
5.创建ActiveX控件的基类并实现IObjectSafety,ActiveX控件可以继承它来减少代码;
6.创建一个ActiveX自定义控件如:ActiveXDemo1;
7.定义ActiveXDemo1的"方法接口"及"事件接口".(如使用自定义事件需用此方式), "事件接口"成员应加上[DispId(x)]标识;
8.创建ActiveX控件完成.
IObjectSafety 接口定义
[ComImport, Guid("4A359FBB-C9A4-494E-B048-AC068DB4FCB2")] //该GUID不能变
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IObjectSafety
{
[PreserveSig]
int GetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] ref int pdwSupportedOptions, [MarshalAs(UnmanagedType.U4)] ref int pdwEnabledOptions);
[PreserveSig()]
int SetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] int dwOptionSetMask, [MarshalAs(UnmanagedType.U4)] int dwEnabledOptions);
}
}ActiveX控件基类(ActiveXControlBase)
public class ActiveXControlBase : IObjectSafety
{
#region IObjectSafety 成员
private const string _IID_IDispatch = "{00020400-0000-0000-C000-000000000046}";
private const string _IID_IDispatchEx = "{a6ef9860-c720-11d0-9337-00a0c90dcaa9}";
private const string _IID_IPersistStorage = "{0000010A-0000-0000-C000-000000000046}";
private const string _IID_IPersistStream = "{00000109-0000-0000-C000-000000000046}";
private const string _IID_IPersistPropertyBag = "{37D84F60-42CB-11CE-8135-00AA004BB851}";
private const int INTERFACESAFE_FOR_UNTRUSTED_CALLER = 0x00000001;
private const int INTERFACESAFE_FOR_UNTRUSTED_DATA = 0x00000002;
private const int S_OK = 0;
private const int E_FAIL = unchecked((int)0x80004005);
private const int E_NOINTERFACE = unchecked((int)0x80004002);
private bool _fSafeForScripting = true;
private bool _fSafeForInitializing = true;
public int GetInterfaceSafetyOptions(ref Guid riid, ref int pdwSupportedOptions, ref int pdwEnabledOptions)
{
int Rslt = E_FAIL;
string strGUID = riid.ToString("B");
pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
switch (strGUID)
{
case _IID_IDispatch:
case _IID_IDispatchEx:
Rslt = S_OK;
pdwEnabledOptions = 0;
if (_fSafeForScripting == true)
pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
Rslt = S_OK;
pdwEnabledOptions = 0;
if (_fSafeForInitializing == true)
pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA;
break;
default:
Rslt = E_NOINTERFACE;
break;
}
return Rslt;
}
public int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions)
{
int Rslt = E_FAIL;
string strGUID = riid.ToString("B");
switch (strGUID)
{
case _IID_IDispatch:
case _IID_IDispatchEx:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_CALLER) &&
(_fSafeForScripting == true))
Rslt = S_OK;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_DATA) &&
(_fSafeForInitializing == true))
Rslt = S_OK;
break;
default:
Rslt = E_NOINTERFACE;
break;
}
return Rslt;
}
#endregion
}自定义ActiveX控件
[ComVisible(true)]
[Guid("684AAD87-C086-4F27-AE55-941A1AAC7212")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface IThreadDemoEvent
{
[DispId(1)] //使用事件,必须加上该标识
void ShowMessage1(string str_Msg);
[DispId(2)]
void ShowMessage2(string str_Msg);
}
[ComVisible(true)]
[Guid("4D12136B-9545-423B-A110-B9405ADF8B30")]
[InterfaceType(ComInterfaceType.InterfaceIsDual)]
public interface IThreadDemo
{
string StartTimer();
string StopTimer();
}
[Guid("2B4FCB85-A3B7-43BD-B104-7380E7F3483F"),
ClassInterface(ClassInterfaceType.AutoDual),
ComDefaultInterface(typeof(IThreadDemo)),
ComSourceInterfaces(typeof(IThreadDemoEvent)),
ComVisible(true)
]
public class ActivexThreadDemo : ActiveXControlBase, IThreadDemo
{
~ActivexThreadDemo()
{
ShowMessage1("释放了啊");
}
Thread _th;
bool _isStop;
public event ShowMessageHandle ShowMessage1;
public event ShowMessageHandle ShowMessage2;
void ThreadMethd()
{
while (true)
{
Thread.Sleep(3000);
if (ShowMessage1 != null)
{
ShowMessage1.Invoke(DateTime.Now.ToString());
}
if (_isStop) break;
}
_th.Abort();
_th = null;
}
public string StartTimer()
{
if (_th == null)
{
_isStop = false;
_th = new Thread(ThreadMethd);
_th.IsBackground = false;
_th.Start();
return "开起计时";
}
if (ShowMessage2 != null)
{
ShowMessage2("执行了 StartTimer");
}
return "已经开起过计时;";
}
public string StopTimer()
{
if (_isStop)
{
return "已经停止计时了!";
}
else
{
_isStop = true;
return "停止计时";
}
}
}注意:
不能使用泛型委托来声明事件,如:public event Action<T> ShowMessageHandle;
当类里面包含 static成员,刷新页面不会清空
跨线程触发事件: [事件].Invoke(参数1,参数2 ...);
ActiveX控件Setup
1.创建Installer项目;
2.右击项目 添加->项目输出 打开添加项目输出组对话框，并选择ActiveX控件类库;
3.主输出文件的属性 Register 值为 vsdrpCOM (关键),RemovePreviousVersions 设置为true
web页面测试;
1.创建一个object 标签,calassid为控件GUID
<object id="ActiveXObj1" classid="clsid:3BCF612C-91CF-4543-83BB-FD2331FDDCB6" ></object>
2.调用控件方法
var r = document.ActiveXObj1.Test1();
3."注册控件的事件"
<script language="javascript" type="text/javascript" for="ActiveXObj1" event="ShowMessage1(msg)">
alert("ActiveXObj1 ："+ msg )
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>ActiveX测试页面</title>
<script type="text/javascript">
function test1() {
var r = document.ActiveXObj1.Test1();
window.status = r;
}
function StartTimer() {
alert(document.ActiveThreadEvent);
var r = document.ActiveThreadEvent.StartTimer();
window.status = r;
}
function StopTimer() {
var r = document.ActiveThreadEvent.StopTimer();
window.status = r;
}
</script>
<!--事件的注册-->
<script language="javascript" type="text/javascript" for="ActiveXObj1" event="ShowMessage1(msg)">
alert("ActiveXObj1 ："+ msg )
</script>
<script language="javascript" type="text/javascript" for="ActiveXObj1" event="ShowMessage2(msg)">
alert("ActiveXObj1:" + msg)
</script>
<!--线程事件注册-->
<script language="javascript" type="text/javascript" for="ActiveThreadEvent" event="ShowMessage1(msg)">
alert("ActiveThreadEvent ："+ msg )
</script>
<script language="javascript" type="text/javascript" for="ActiveThreadEvent" event="ShowMessage2(msg)">
alert("ActiveThreadEvent:" + msg)
</script>
</head>
<body>
<object id="ActiveXObj1" classid="clsid:3BCF612C-91CF-4543-83BB-FD2331FDDCB6" ></object>
<br />
<object id="ActiveThreadEvent" classid="clsid:2B4FCB85-A3B7-43BD-B104-7380E7F3483F" ></object>
<br />
<br />
<input type="button" value="测试4-相应事件!" onclick="test1();" /><br />
<input type="button" value="开始计时!" onclick="StartTimer();" /><br />
<input type="button" value="停止计时!" onclick="StopTimer();" /><br />
</body>
</html>