On Friday, 28 April 2017 at 09:25:31 UTC, John Chapman wrote:
On Thursday, 27 April 2017 at 20:20:23 UTC, Nierjerson wrote:
I think the main issue though, is that I really don't know
what is going on when I invoke the PS function. It seems to
call the server method that takes the interface and then the
server does it's "magic"(which is calling my QueryInterface)
but how the implemented QueryInterface is suppose to respond
is beyond me... I've tried some based stuff but nothing seem
to work. The good news is that it is doing something(calling
QueryInterface) which means that the server is at work.
Any more ideas? I think the issue currently is is the
QueryInterface(it is simply not doing what it is suppose to).
I'll probably have to look at some other implementations to
see what is going on.
QueryInterface is COM's version of opCast. It asks if you
support the interface represented by an IID (riid). If you
don't, then you return E_NOINTERFACE. If you do, then you point
the result (pvObject) to yourself and return S_OK. Here's a
basic implementation:
extern(Windows)
HRESULT QueryInterface(IID* riid, void** pvObject) {
if (pvObject is null) return E_POINTER;
*pvObject = null;
if (*riid == IID_IUnknown) *pvObject =
cast(void*)cast(IUnknown)this;
else if (*riid == IID_IDispatch) *pvObject =
cast(void*)cast(IDispatch)this;
// and so on for all interfaces we support
if (*pvObject is null) return E_NOINTERFACE;
(cast(IUnknown)this).AddRef();
return S_OK;
}
AddRef/Release perform the COM object's reference counting, so
you should implement them too.
I wrapped the COM interface that is returned by PS and the
queryInterface works and everything passes(as it should) but when
I use your query interface it results in the COM error specified.
Seems that the QueryInterface code is not 100% correct or
something else is going on.
What I notices is that when PS's QueryInterface routine is used,
it is called only 3 times(queries 3 interfaces like IUnknown,
etc) while when I use your code about 10 interfaces are
queried(including those 3 from PS).
PS's RGB QueryInterface
QueryInterface Called: 00000003-0000-0000-C00-000000000046(GUID),
19F178(Object)
QueryInterface Called:
ECC8691B-C1DB-4DC0-855E-65F6C551AF49(GUID), 19F124(Object)
QueryInterface Called: 00000003-0000-0000-C00-000000000046(GUID),
19EFE8(Object)
main.icRGBColor.Release
Yours
QueryInterface Called: 00000003-0000-0000-C00-000000000046(GUID),
19F178(Object) Not Supported
QueryInterface Called:
ECC8691B-C1DB-4DC0-855E-65F6C551AF49(GUID), 19F124(Object)
Not Supported
QueryInterface Called: 00000003-0000-0000-C00-000000000046(GUID),
19EFE8(Object) Not Supported
QueryInterface Called: 0000001B-0000-0000-C00-000000000046(GUID),
19F00C(Object) Not Supported
QueryInterface Called: 00000000-0000-0000-C00-000000000046(GUID),
19F040(Object) IUnknown Supported
main.icRGBColor.AddRef
QueryInterface Called: 00000018-0000-0000-C00-000000000046(GUID),
19EF1C(Object) Not Supported
QueryInterface Called:
334D391F-0E79-3B15-C9FF-EAC65DD07C42(GUID), 19EEF4(Object)
Not Supported
QueryInterface Called: 00000040-0000-0000-C00-000000000046(GUID),
19EF30(Object) Not Supported
QueryInterface Called:
334D391F-0E79-3B15-C9FF-EAC65DD07C42(GUID), 19EEF4(Object)
Not Supported
QueryInterface Called:
94EA2B94-E9CC-49E0-C0FF-EE64CA8F5B90(GUID), 19EF34(Object)
Not Supported
QueryInterface Called:
334D391F-0E79-3B15-C9FF-EAC65DD07C42(GUID), 19EEF4(Object)
Not Supported
QueryInterface Called:
77DD1250-139C-2BC3-BD95-900ACED61BE5(GUID), 19EF2C(Object)
Not Supported
QueryInterface Called:
334D391F-0E79-3B15-C9FF-EAC65DD07C42(GUID), 19EEF4(Object)
Not Supported
QueryInterface Called:
BFD60505-5A1F-4E41-88BA-A6FB07202DA9(GUID), 19EF28(Object)
Not Supported
QueryInterface Called:
334D391F-0E79-3B15-C9FF-EAC65DD07C42(GUID), 19EEF4(Object)
Not Supported
QueryInterface Called:
03FB5C57-D534-45F5-A1F4-D39556983875(GUID), 19EF24(Object)
Not Supported
QueryInterface Called:
334D391F-0E79-3B15-C9FF-EAC65DD07C42(GUID), 19EEF4(Object)
Not Supported
QueryInterface Called:
2C258AE7-50DC-49FF-9D1D-2ECB9A52CDD7(GUID), 19EF20(Object)
Not Supported
QueryInterface Called: 00000019-0000-0000-C00-000000000046(GUID),
2B5A3C0(Object) Not Supported
QueryInterface Called:
4C1E39E1-E3E3-4296-AA86-EC938D896E92(GUID), 19EF18(Object)
Not Supported
main.icRGBColor.Release
QueryInterface Called: 00020400-0000-0000-C00-000000000046(GUID),
19ED8C(Object) IDispatch Supported
main.icRGBColor.AddRef
QueryInterface Called:
F37B4894-3ED2-48AF-AD38-BB1B27E93869(GUID), 2D3EAAC(Object)
Not Supported
QueryInterface Called: 00000003-0000-0000-C00-000000000046(GUID),
19EFE8(Object)
I don't know if things are passed off to another query method or
what. The query interface I use is
// IUnknown
int QueryInterface(const(GUID)* riid, void** pvObject)
{
write("QueryInterface Called: ", Guid2Str(*riid), "(GUID), ",
pvObject, "(Object)");
//version(wrap)
{
writeln();
return rgb.iDispatch.QueryInterface(riid, pvObject);
}
// Always set out parameter to NULL, validating it first.
if (pvObject is null) return E_POINTER;
*pvObject = null;
if (*riid == IID_IUnknown)
{
*pvObject = cast(void*)cast(IUnknown)this;
writeln("\tIUnknown Supported");
}
else if (*riid == IID_IDispatch)
{
*pvObject = cast(void*)cast(IDispatch)this;
writeln("\tIDispatch Supported");
}
// and so on for all interfaces we support
if (*pvObject is null)
{
writeln("\tNot Supported");
return E_NOINTERFACE;
}
//(cast(IUnknown)this).AddRef();
return S_OK;
}
Any ideas where to proceed?
