I install avshws example of WDK in Win7 64bit OS, and insert the filter into graphedit
when I open the property page, it shows that the requested page could not be cosplayed
I debug the issue using windbg, result as follow:
ksproxy!CollectAllSets <— send irp using KsSynchronousDeviceControl
ksproxy!CKsProxy::GetPages
graphedt!CVfWPropertySheet::AddSpecificPages <— return 0, so it fails
graphedt!CVfWPropertySheet::CVfWPropertySheet
graphedt!CPropObject::CreatePropertyDialog
MFC42!_AfxDispatchCmdMsg
MFC42!CCmdTarget::OnCmdMsg
MFC42!CView::OnCmdMsg
MFC42!CWnd::OnCommand
MFC42!CWnd::OnWndMsg
MFC42!CWnd::WindowProc
MFC42!AfxCallWndProc
MFC42!AfxWndProc
MFC42!AfxWndProcBase
USER32!UserCallWinProcCheckWow
USER32!DispatchMessageWorker
MFC42!CWinThread::PumpMessage
MFC42!CWinThread::Run
MFC42!AfxWinMain
graphedt!CDialog::EndDialog
kernel32!BaseThreadInitThunk
ntdll!RtlUserThreadStart
the same operators work fine in windows server 2008 OS
please help me, thank you