97 lines
2.9 KiB
Java
97 lines
2.9 KiB
Java
package com.jacob.test.vbscript;
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import com.jacob.com.*;
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import com.jacob.activeX.*;
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/**
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* This example demonstrates how to make calls between
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* two different STA's.
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* First, to create an STA, you need to extend the STA class
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* and override its OnInit() method. This method will be called
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* in the STA's thread so you can use it to create your COM
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* components that will run in that STA.
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* If you then try to call methods on those components from other
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* threads (STA or MTA) - this will fail.
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* You cannot create a component in an STA and call its methods
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* from another thread.
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* You can use the DispatchProxy to get a proxy to any Dispatch
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* that lives in another STA. This object has to be created in the
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* STA that houses the Dispatch (in this case it's created in the
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* OnInit method). Then, another thread can call the toDispatch()
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* method of DispatchProxy to get a local proxy. At most ONE (!)
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* thread can call toDispatch(), and the call can be made only once.
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* This is because a IStream object is used to pass the proxy, and
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* it is only written once and closed when you read it.
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* If you need multiple threads to access a Dispatch pointer, then
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* create that many DispatchProxy objects.
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*/
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class ScriptTest2ActiveX extends STA
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{
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public static ActiveXComponent sC;
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public static DispatchEvents de = null;
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public static DispatchProxy sCon = null;
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public boolean OnInit()
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{
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try
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{
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System.out.println("OnInit");
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System.out.println(Thread.currentThread());
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String lang = "VBScript";
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sC = new ActiveXComponent("ScriptControl");
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// sCon can be called from another thread
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sCon = new DispatchProxy(sC);
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sC.setProperty("Language", lang);
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ScriptTestErrEvents te = new ScriptTestErrEvents();
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de = new DispatchEvents(sC, te);
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return true;
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}
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catch (Exception e)
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{
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e.printStackTrace();
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return false;
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}
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}
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public void OnQuit()
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{
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System.out.println("OnQuit");
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}
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public static void main(String args[]) throws Exception
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{
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try {
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ComThread.InitSTA();
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ScriptTest2ActiveX script = new ScriptTest2ActiveX();
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Thread.sleep(1000);
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// get a thread-local Dispatch from sCon
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ActiveXComponent sc = new ActiveXComponent(sCon.toDispatch());
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// call a method on the thread-local Dispatch obtained
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// from the DispatchProxy. If you try to make the same
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// method call on the sControl object - you will get a
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// ComException.
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Variant result = sc.invoke("Eval", args[0]);
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System.out.println("eval("+args[0]+") = "+ result);
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script.quit();
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System.out.println("called quit");
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} catch (ComException e) {
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e.printStackTrace();
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}
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finally
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{
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Integer I = null;
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for(int i=1;i<1000000;i++)
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{
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I = new Integer(i);
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}
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System.out.println(I);
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ComThread.Release();
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}
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}
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}
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