Signing active x control And marking as safe

I have developed an active x control and signed it with certificate. I know that digital signing is needed , so that the browser knows that the active x comes valid sourc开发者_JAVA百科e. My asp.net form has a button , which invokes a method on activex control as -

function test() 
    {
        objActiveX = document.getElementById("activeXUploadAttachment");                
         var base64Image = objActiveX.ParseClipbpoardDataAsBase64()

But it errors on browser stating that the - IE has blocked this site from using an active x control in an unsafe manner. ( Please see attachment).

So should I have to develop the active x control which implement IObjectSafety and also signed digitally, so that it can execute on client browser without any warnings from IE. Any examples.

Please let me know.

---

a good example from "A Complete ActiveX Web Control Tutorial" may help you!