Wait till Do() method of an ActiveX control is finished

[darioars]

Hi guys!

I have an application containing an ActiveX control, which allows me to send commands to it by means of its Do() method. So, I decided to do some calls to this method within my program but when I debug it, the Do() calls are got through without getting the result of its execution. I'm not sure if it takes some time to execute this calls or what, but I'm interested in a function or whatever that allows me to wait till the Do() method has really become effective.

Any suggestion?

Thanks in advance!

Darío

 

[Cagliostro]

what id Do()?

Ion Filipski

 

[darioars]

You mean that if I had the ID of the Do() method I could wait for it?

 

[Cagliostro]

Is it the DISPID of member function "Do"?
If so, I believe you call in some way the IDispatch method Invoke. It returns a HRESULT, let's say hr.

hr = pDisp->Invoke(...DISP_ID_OF_DO....);
if(FAILED(hr))
::MessageBox(0, "invoke of method Do failed", "", 0);

So, first of all you should see if method invokation succeeded. Usualy if succeeds you don't have to synchronize them because the COM environment do it. Else if the method is asynchronous, there should be some notification mechanisms, for example adise sinks or connection points.

Ion Filipski