Jacob调用ocx出现类型不匹配

[sinall]

用ActiveXplorer看ocx

Public Function getConnectionState(errorCode As Long) As Long ' 方法getConnectionState

调用代码为：

        ActiveXComponent activeX = new ActiveXComponent("XXXCOMCtrl.1");
        dispatch = activeX.getObject();
        Long errorCode = 0L;
        Variant ret = Dispatch.call(dispatch, "getConnectionState", errorCode);

错误为：

Exception in thread "main" com.jacob.com.ComFailException: A COM exception has been encountered:
At Invoke of: getConnectionState
Description: 80020005 / 类型不匹配。

	at com.jacob.com.Dispatch.invokev(Native Method)
	at com.jacob.com.Dispatch.invokev(Dispatch.java:625)
	at com.jacob.com.Dispatch.callN(Dispatch.java:453)
	at com.jacob.com.Dispatch.call(Dispatch.java:541)
	at com.xxx.main(Main.java:16)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)

请问该如何调用该函数？

[clever101]

改为：

 Long errorCode = 0L;
Variant v = new Variant(errorCode );
 Variant ret = Dispatch.call(dispatch, "getConnectionState", v);