I've got a CAxWindow that's a member of a class derived from CView. The COM component that the CAxWindow is hosting has message handlers so that when the CAxWindow is moved, its OnSize handler is called. However, I've noticed a very odd behavior that occurs when certain other applications are open (Spy++ for one example). When those programs are running, the COM component never gets the messages when its host CAxWindow is moved. Basically the order of calls goes like this when it works correctly: CViewDerivedClass::OnSize calls m_AxWindow->MoveWindow CComComponent::OnSize gets called As soon as something like Spy++ is open CComComponent::OnSize doesn't get called but when you close Spy++ again it starts getting called again. Has anyone else seen an issue similar to this? Is this some hidden pitfall of mixing ATL and MFC? A sign of an incorrect message map in the COM component? Any insight would be greatly appreciated! Thanks, Will Gorman
Losing messages to the control of a CAxWindow?
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- 1. CComClassFactorySingleton::CreateInstance not getting called.
Hello. I am developing a CServiceModule that contains a singleton object. I'm using VC6 ATL dev environment. I placed the DECLARE_CLASSFACTORY_SINGLETON(CObj) macro in the definition of the CObj class. However, when the class factory is called, CComCreator::CreateInstance is called instead. I am attempting to acquire a pointer to the object from within my CServiceModule so that I can work with it. I want the same instance of the object to be used inside the CServiceModule as is being used by VB, etc. Is there something I am overlooking? Thanks. - Roger - 2. _com_dispatch_propget
"Havic Ploccin" <no.email@please> wrote in message news:u7x% XXXX@XXXXX.COM ... > I need to call the stock "ReadyState" property (returns a long) on an MFC > ActiveX control whose IDispatch is available to me in my ATL project. > Anybody knows how to call this using the "_com_dispatch_propget" function? Do you insist on using _com_dispatch_propget? How about this: IDispatch* pDisp; // contol's interface pointer CComVariant varResult; HRESULT hr = CComDispatchDriver::GetProperty(pDisp, DISPID_READYSTATE, &varResult); // or CComDispatchDriver spDriver = pDisp; HRESULT hr = spDriver->GetProperty(DISPID_READYSTATE, &varResult); // or HRESULT hr = spDriver->GetPropertyByName(OLESTR("ReadyState"), &varResult); -- With best wishes, Igor Tandetnik "For every complex problem, there is a solution that is simple, neat, and wrong." H.L. Mencken - 3. VBA codes question
Hi, I just write down some VBA codes for an application. What I need is extract some data from a selected area by mouse left-button. So what should I do ? The most I concerned is how to get the Range object of the shadow area selected by mouse. Thanks.
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Losing messages to the control of a CAxWindow?
by V2lsbCBHb3JtYW4 » Thu, 14 Oct 2004 08:39:03 GMT
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