EDN Admin
Well-known member
I have seen questions similar to mine out there but Im not running into the same problems. Here are the steps I followed in hopes someone could point me to my error.
1. ATL Project (called Sample)<br/>
2. Add class (ATL Simple Object) called Dog
3 Checked connection points & IObjectwithSite
4. Added a method to the events, my .idl file:
<pre class="prettyprint import "oaidl.idl";
import "ocidl.idl";
[
object,
uuid(D3299028-F05E-4341-A686-AB2DBC844DF5),
dual,
nonextensible,
helpstring("IDog Interface"),
pointer_default(unique)
]
interface IDog : IDispatch{
};
[
uuid(48BE55E1-A592-43BF-89CD-E4A8A45F8988),
version(1.0),
helpstring("Sample 1.0 Type Library")
]
library SampleLib
{
importlib("stdole2.tlb");
[
uuid(E6BA2F52-0796-4446-8EED-1D00E353F647),
helpstring("_IDogEvents Interface")
]
dispinterface _IDogEvents
{
properties:
methods:
[id(1), helpstring("method bark")] void bark();
};
[
uuid(3C47225F-64EF-4343-B649-12CB510FEF50),
helpstring("Dog Class")
]
coclass Dog
{
[default] interface IDog;
[default, source] dispinterface _IDogEvents;
};
};
[/code]
5. Add/Implement Connection Point (_IDogEvents), my _IDOGEvents_CP.h:<br/>
<pre class="prettyprint #pragma once
template<class T>
class CProxy_IDogEvents : public IConnectionPointImpl<T, &__uuidof(_IDogEvents)>
{
public:
HRESULT Fire_bark()
{
HRESULT hr = S_OK;
T * pThis = static_cast<T *>(this);
int cConnections = m_vec.GetSize();
for (int iConnection = 0; iConnection < cConnections; iConnection++)
{
pThis->Lock();
CComPtr<IUnknown> punkConnection = m_vec.GetAt(iConnection);
pThis->Unlock();
IDispatch * pConnection = static_cast<IDispatch *>(punkConnection.p);
if (pConnection)
{
DISPPARAMS params = { NULL, NULL, 0, 0 };
hr = pConnection->Invoke(1, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, ¶ms, NULL, NULL, NULL);
}
}
return hr;
}
};
[/code]
<br/>
6 Added IProvideClassInfo2Impl & IObjectSafetyImpl to the class and added IProvideClassInfo,IProvideClassInfo2, IObjectSafety to the COM Map
My Dog.h file:
<pre class="prettyprint #pragma once
#include "resource.h" // main symbols
#include "Sample_i.h"
#include "_IDogEvents_CP.h"
class ATL_NO_VTABLE CDog :
public CComObjectRootEx<CComSingleThreadModel>,
public CComCoClass<CDog, &CLSID_Dog>,
public IConnectionPointContainerImpl<CDog>,
public CProxy_IDogEvents<CDog>,
public IObjectWithSiteImpl<CDog>,
public IProvideClassInfo2Impl<&CLSID_Dog, &__uuidof(_IDogEvents), &LIBID_SampleLib>,
public IObjectSafetyImpl<CDog,INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA>,
public IDispatchImpl<IDog, &IID_IDog, &LIBID_SampleLib, 1, 0>
{
public:
CDog()
{
MessageBoxA(NULL,"Dog init","1",MB_ICONINFORMATION);
Fire_bark();
}
DECLARE_REGISTRY_RESOURCEID(IDR_DOG)
BEGIN_COM_MAP(CDog)
COM_INTERFACE_ENTRY(IDog)
COM_INTERFACE_ENTRY(IDispatch)
COM_INTERFACE_ENTRY(IConnectionPointContainer)
COM_INTERFACE_ENTRY(IObjectWithSite)
COM_INTERFACE_ENTRY(IObjectSafety)
COM_INTERFACE_ENTRY(IProvideClassInfo)
COM_INTERFACE_ENTRY(IProvideClassInfo2)
END_COM_MAP()
BEGIN_CONNECTION_POINT_MAP(CDog)
CONNECTION_POINT_ENTRY(__uuidof(_IDogEvents))
END_CONNECTION_POINT_MAP()
DECLARE_PROTECT_FINAL_CONSTRUCT()
HRESULT FinalConstruct()
{
return S_OK;
}
void FinalRelease()
{
}
public:
};
OBJECT_ENTRY_AUTO(__uuidof(Dog), CDog)
[/code]
<br/>
Html file
<pre class="prettyprint <html>
<body>
<script type="text/javascript
function mydog::bark()
{
alert("ruff ruff");
}
</script>
<object id="mydog" width=10 height=10 border=1 classid="CLSID:3C47225F-64EF-4343-B649-12CB510FEF50
</body>
</html>[/code]
<br/>
There doesnt seem to be a connection established. Anytime a Fire_xxx event is called the m_vec.GetSize(); returns 0 and nothing will get invoked by the dispatch. What am I missing?<br/>
View the full article
1. ATL Project (called Sample)<br/>
2. Add class (ATL Simple Object) called Dog
3 Checked connection points & IObjectwithSite
4. Added a method to the events, my .idl file:
<pre class="prettyprint import "oaidl.idl";
import "ocidl.idl";
[
object,
uuid(D3299028-F05E-4341-A686-AB2DBC844DF5),
dual,
nonextensible,
helpstring("IDog Interface"),
pointer_default(unique)
]
interface IDog : IDispatch{
};
[
uuid(48BE55E1-A592-43BF-89CD-E4A8A45F8988),
version(1.0),
helpstring("Sample 1.0 Type Library")
]
library SampleLib
{
importlib("stdole2.tlb");
[
uuid(E6BA2F52-0796-4446-8EED-1D00E353F647),
helpstring("_IDogEvents Interface")
]
dispinterface _IDogEvents
{
properties:
methods:
[id(1), helpstring("method bark")] void bark();
};
[
uuid(3C47225F-64EF-4343-B649-12CB510FEF50),
helpstring("Dog Class")
]
coclass Dog
{
[default] interface IDog;
[default, source] dispinterface _IDogEvents;
};
};
[/code]
5. Add/Implement Connection Point (_IDogEvents), my _IDOGEvents_CP.h:<br/>
<pre class="prettyprint #pragma once
template<class T>
class CProxy_IDogEvents : public IConnectionPointImpl<T, &__uuidof(_IDogEvents)>
{
public:
HRESULT Fire_bark()
{
HRESULT hr = S_OK;
T * pThis = static_cast<T *>(this);
int cConnections = m_vec.GetSize();
for (int iConnection = 0; iConnection < cConnections; iConnection++)
{
pThis->Lock();
CComPtr<IUnknown> punkConnection = m_vec.GetAt(iConnection);
pThis->Unlock();
IDispatch * pConnection = static_cast<IDispatch *>(punkConnection.p);
if (pConnection)
{
DISPPARAMS params = { NULL, NULL, 0, 0 };
hr = pConnection->Invoke(1, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, ¶ms, NULL, NULL, NULL);
}
}
return hr;
}
};
[/code]
<br/>
6 Added IProvideClassInfo2Impl & IObjectSafetyImpl to the class and added IProvideClassInfo,IProvideClassInfo2, IObjectSafety to the COM Map
My Dog.h file:
<pre class="prettyprint #pragma once
#include "resource.h" // main symbols
#include "Sample_i.h"
#include "_IDogEvents_CP.h"
class ATL_NO_VTABLE CDog :
public CComObjectRootEx<CComSingleThreadModel>,
public CComCoClass<CDog, &CLSID_Dog>,
public IConnectionPointContainerImpl<CDog>,
public CProxy_IDogEvents<CDog>,
public IObjectWithSiteImpl<CDog>,
public IProvideClassInfo2Impl<&CLSID_Dog, &__uuidof(_IDogEvents), &LIBID_SampleLib>,
public IObjectSafetyImpl<CDog,INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA>,
public IDispatchImpl<IDog, &IID_IDog, &LIBID_SampleLib, 1, 0>
{
public:
CDog()
{
MessageBoxA(NULL,"Dog init","1",MB_ICONINFORMATION);
Fire_bark();
}
DECLARE_REGISTRY_RESOURCEID(IDR_DOG)
BEGIN_COM_MAP(CDog)
COM_INTERFACE_ENTRY(IDog)
COM_INTERFACE_ENTRY(IDispatch)
COM_INTERFACE_ENTRY(IConnectionPointContainer)
COM_INTERFACE_ENTRY(IObjectWithSite)
COM_INTERFACE_ENTRY(IObjectSafety)
COM_INTERFACE_ENTRY(IProvideClassInfo)
COM_INTERFACE_ENTRY(IProvideClassInfo2)
END_COM_MAP()
BEGIN_CONNECTION_POINT_MAP(CDog)
CONNECTION_POINT_ENTRY(__uuidof(_IDogEvents))
END_CONNECTION_POINT_MAP()
DECLARE_PROTECT_FINAL_CONSTRUCT()
HRESULT FinalConstruct()
{
return S_OK;
}
void FinalRelease()
{
}
public:
};
OBJECT_ENTRY_AUTO(__uuidof(Dog), CDog)
[/code]
<br/>
Html file
<pre class="prettyprint <html>
<body>
<script type="text/javascript
function mydog::bark()
{
alert("ruff ruff");
}
</script>
<object id="mydog" width=10 height=10 border=1 classid="CLSID:3C47225F-64EF-4343-B649-12CB510FEF50
</body>
</html>[/code]
<br/>
There doesnt seem to be a connection established. Anytime a Fire_xxx event is called the m_vec.GetSize(); returns 0 and nothing will get invoked by the dispatch. What am I missing?<br/>
View the full article
