组件对象模型自动化

Question

我想调用一个有COM接口的软件的对象。我的对象中的方法如图所示，我的代码如下：

::CLSIDFromProgID(OLESTR("SGNSAutomation.SGNSApplication"), &clsid);
IID iid;

  HRESULT hr = CoCreateInstance(clsid, NULL, CLSCTX_ALL, 
  IID_IDispatch, (LPVOID*)&pWMPDispatch);
  IDispatch * pdisp = (IDispatch *)NULL;
  DISPID dispid;
   DISPPARAMS params = {NULL};
    OLECHAR * Name = OLESTR("addSimulationCase","getSimulationCase","importCase","openCase","registeredBoundaryEquipmentsList","registeredCorrelaionsList","registeredEquipmentsList","removeSimulationCase");
 HRESULT hresult =pWMPDispatch->GetIDsOfNames(IID_NULL, &Name,8,LOCALE_SYSTEM_DEFAULT,&dispid);
 hresult =pWMPDispatch->Invoke(dispid, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, &params, NULL, NULL,
                          NULL);  
  //pdisp IDispatch
_ASSERT(hr==S_OK);

但是发生了一个错误，我认为是因为 Name 变量定义我的对象中的方法列表是：

addSimulationCase
getSimulationCase
importCase
openCase
registeredBoundaryEquipmentsList
registeredCorrelaionsList
registeredEquipmentsList
removeSimulationCase

请帮我定义指针名称。

Answer 1

这个名字GetIDsOfNames有点让人迷惑。看起来您可以像您尝试的那样一次查询具有多个函数名称的对象。不是这种情况。您只能查询单个函数名称。来自 the documentation:

When GetIDsOfNames is called with more than one name, the first name (rgszNames[0]) corresponds to the member name, and subsequent names correspond to the names of the member's parameters.

您需要为每个要调用的函数单独 GetIDsOfNames 调用。

组件对象模型自动化

component object model Automation

com

automation