COM 方法结果未显示正确的值
我的 COM 组件中有以下方法调用。该方法是从 VBScript 调用的。
STDMETHODIMP CMyInterface::TestX(VARIANT* myTest)
{
myTest->vt = VT_I4;
myTest->lVal = m_nCount;
++m_nCount;
return S_OK;
}
以下代码用于调用该方法。但最后一条语句' Response.Write("Value of result" & result)'没有打印0。 可能是什么问题？
Set myObject = CreateObject("MyCom.MyInterface")
result=myObject.TestX(value)
Response.Write("Value of result" & result)
I have the following method call in my COM component. This method is called from VBScript.
STDMETHODIMP CMyInterface::TestX(VARIANT* myTest)
{
myTest->vt = VT_I4;
myTest->lVal = m_nCount;
++m_nCount;
return S_OK;
}
The following code is used to invoke the method. But the last statement ' Response.Write("Value of result" & result)'is not printing 0. What could be the problem?
Set myObject = CreateObject("MyCom.MyInterface")
result=myObject.TestX(value)
Response.Write("Value of result" & result)
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脚本客户端不会将 HRESULT 视为方法调用的返回值。相反，它们会查找 IDL 中标记为 [out, retval] 的参数，并将其用作返回值。
Scripting clients don't consider the HRESULT to be the return value of a method call. Instead, they look for a parameter marked in the IDL as [out, retval] and use that as the return value.