[wdmaudiodev] Re: Create an object of an APO in a win32 APP
- From: Abhinav Singh <abhinav4ever@xxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 24 Dec 2014 15:03:36 +0000
thanks…I was running trying to create the APO object from a 32 bit app which
was causing this problem..I actually encountered this problem when trying to
create an APO instance from a dll loaded in explorer.exe but somehow it always
failed so I decided to check it on a simple win32 app…a restart fixed the issue
with the dll loaded in the explorer as well.
Sent from Windows Mail
From: Matthew.van.Eerde@xxxxxxxxxxxxx
Sent: Monday, December 22, 2014 1:33 PM
To: wdmaudiodev@xxxxxxxxxxxxx
If you’re running a 32-bit app on a 64-bit version of Windows, this is
expected; APOs are typically native-only.
If you’re running native, check to see that the CLSID in question is registered
under HKEY_CLASSES_ROOT\CLSID\{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} and that
the hosting .dll exists.
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Abhinav Singh
Sent: Monday, December 22, 2014 1:24 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Create an object of an APO in a win32 APP
I am using the code below to create an object of an APO from a normal win32
app. The intention is to check whether the APO is installed in the PC. However
i get a Class Not Registered error every time i execute the below piece of
code.
HRESULT isExistAPO(CLSID CLSID_ClassID, IID IID_InterfaceID)
{
// CLSID_ClassID is the class GUID of the APO
//IID_InterfaceID is the interface ID of the APO
//CoInitialize(NULL);
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
HRESULT hr = S_OK;
IUnknown *pAPO = NULL;
hr = CoCreateInstance(CLSID_ClassID,
NULL,
CLSCTX_INPROC_SERVER,
IID_InterfaceID,
(void**)&pAPO);
if (SUCCEEDED(hr))
{
//APO found
pAPO->Release();
}
else
{
//Failed
}
CoUninitialize();
return hr;
}
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