如何使用Jacob从java调用OCX函数

Question

你好我是雅各布的新手。

我想在我的Java代码中使用第三方ocx。我没有得到如何从我的Java代码调用ocx函数。我试过很多方法，但无法确定正确的方法。

每当我对ocx函数使用call或invoke方法时，它都会给我错误。

    The Library been loaded, and an activeX component been created
Exception in thread "main" com.jacob.com.ComFailException: A COM exception has been encountered:
At Invoke of: StartAcquire
Description: An unknown COM error has occured.
    at com.jacob.com.Dispatch.invokev(Native Method)
    at com.jacob.com.Dispatch.call(Dispatch.java)
    at ReadDLL.main(ReadDLL.java:40)

这是我的代码：

private static Object activeXWordObject = null;

    public static void main(String[] args){

        //Loading the library:
        ComThread.InitMTA();
        ActiveXComponent comp=new ActiveXComponent("CLSID:{9F368618-C114-401F-823D-CF97415B5D5C}");
        //ActiveXComponent comp=new ActiveXComponent("Vt2 Control.Application");

        activeXWordObject = comp.getObject();
        System.out.println("The Library been loaded, and an activeX component been created");

        int arg1=100;
        int arg2=50;
        Short o2 = 2;
        boolean vTrue = true;
       // object nu - null;
        Short port =4;

        //using the functions from the library:        

       // Dispatch.put(activeXWordObject,"CommPort",port);
        //comp.invoke("NewSession",  new Variant[] {});
        //Dispatch.callSub(activeXWordObject, "NewSession");

        //Variant v = Dispatch.invoke("NewSession");
        //comp.setProperty("CommPort", 2);
        Dispatch.call(activeXWordObject, "StartAcquire");
        //Dispatch.call(activeXWordObject, "CommPort",port).toVariantArray();
        //Dispatch.call(comp, "NewSession");
        //Dispatch.call(activeXWordObject, "PortOpen",vTrue);
       //  Dispatch.put(comp, "ParaMode",o2);


        System.out.println("After New session");


        /**The following code is abstract of using the get,
         * when the library contains a function that return
         * some kind of a struct, and then get its properties and values
         **/
//        Dispatch disp=Dispatch.call(comp,"sum",100,10).toDispatch();
//        DataType Var=Dispatch.get(disp,"Property Name");
    }