调用函数在JACOB中失败

Question

尝试使用COM接口调用名为“set”的函数 我得到了例外

Exception in thread "main" com.jacob.com.ComFailException: Can't map name to dispid: set

当我尝试在matlab中调用该函数时，它正在工作......

这是我正在使用的功能

public void setAttribute(String attribute, int value) {

    Variant[] vars = new Variant[3];
    vars[0] = new Variant("AttValue");
    vars[1] = new Variant(attribute);
    vars[2] = new Variant(value);

    signalGroup.invoke("set", vars);

}

Answer 1

public void setIndexedAttribute(String attribute, Variant value) {

    Variant[] indecies = new Variant[1];
    indecies[0] = new Variant(attribute);
    setProperty(signalGroup, "AttValue", indecies, value);

}

public void setProperty(Dispatch activex, String attributeName, Variant[] indecies,
        Variant value) {
    Variant[] variants = new Variant[indecies.length + 1];

    for (int i = 0; i < indecies.length; i++) {
        variants[i] = indecies[i];
    }
    variants[variants.length - 1] = value;

    Dispatch.invoke(activex, attributeName, Dispatch.Put, variants,new int[variants.length]);
}

使用它的例子......

sg_1.setIndexedAttribute("State", new Variant(10));