从MFC客户端调用ActiveX方法

问题描述

我创建了一个非常简单的概念验证ActiveX控件，并将其命名为AX0。我用蜥蜴给它一个方法，我们的老朋友foo（）。我已将控件放在一个对话框中，并再次使用lizard创建一个变量ctrlAx，它是对话框类的成员。我编译并运行，控件出现在对话框中。生活很美好。

现在，我想打电话给foo（）。 h * ll怎么做？我需要得到一个界面指针...但是要什么，以及如何？

这是我的调度图。

I have created a very simple proof of concept ActiveX control, and named it AX0. I have used the lizard to give it a method, our old friend foo(). I have placed the control in a dialog box and used the lizard again to create a variable, ctrlAx, which is a member of the dialog class. I compile and run, and the control appears in the dialog. Life is good.
Now, I want to call foo(). How the h*ll to do that? I need to get an interface pointer ... but to what, and how?
Here is my dispatch map.

BEGIN_DISPATCH_MAP(CAX0Ctrl, COleControl)
    DISP_FUNCTION_ID(CAX0Ctrl, "AboutBox", DISPID_ABOUTBOX, AboutBox, VT_EMPTY, VTS_NONE)
    DISP_FUNCTION_ID(CAX0Ctrl, "foo", dispidfoo, foo, VT_I4, VTS_I4)
    DISP_FUNCTION_ID(CAX0Ctrl, "bar", dispidbar, bar, VT_I4, VTS_NONE)
END_DISPATCH_MAP()

I already created the ActiveX method, need to know how to call it.

Thanks loads

Eric

推荐答案

IDispatch*  pdisp;
if(S_OK==ctrlAx->QueryInterface(IID_IDispatch,(void**)&pdisp))
{
  LPOLESTR    an[1] = { L"foo" };
  DISPID      ad[1] = { 0 };

  if(S_OK==pdisp->GetIDsOfNames(IID_NULL,an,1,0,ad)
  {
    DISPPARAMS  arg = { 0,0,0,0 };
    VARIANT      ret = { VT_EMPTY; };
    if(S_OK==pdisp->Invoke(ad[0],IID_NULL,0,DISPATCH_METHOD,&arg,&ret,0,0))
    {
      VariantClear(&ret);
    }
  }

  pdisp->Release();
}

i不知道mfc中是否有封装。

问候。

i dont know if there is an encapsulation for that in mfc.
Regards.

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