CQueryAssociations.h

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#pragma once
 
class CQueryAssociations :
    public CComCoClass<CQueryAssociations, &CLSID_QueryAssociations>,
    public CComObjectRootEx<CComMultiThreadModelNoCS>,
    public IQueryAssociations
{
private:
    HKEY hkeySource;
    HKEY hkeyProgID;
 
    HRESULT GetValue(HKEY hkey, const WCHAR *name, void **data, DWORD *data_size);
    HRESULT GetCommand(const WCHAR *extra, WCHAR **command);
    HRESULT GetExecutable(LPCWSTR pszExtra, LPWSTR path, DWORD pathlen, DWORD *len);
    HRESULT ReturnData(void *out, DWORD *outlen, const void *data, DWORD datalen);
    HRESULT ReturnString(ASSOCF flags, LPWSTR out, DWORD *outlen, LPCWSTR data, DWORD datalen);
 
public:
    CQueryAssociations();
    ~CQueryAssociations();
 
    // *** IQueryAssociations methods ***
    STDMETHOD(Init)(ASSOCF flags, LPCWSTR pwszAssoc, HKEY hkProgid, HWND hwnd) override;
    STDMETHOD(GetString)(ASSOCF flags, ASSOCSTR str, LPCWSTR pwszExtra, LPWSTR pwszOut, DWORD *pcchOut) override;
    STDMETHOD(GetKey)(ASSOCF flags, ASSOCKEY key, LPCWSTR pwszExtra, HKEY *phkeyOut) override;
    STDMETHOD(GetData)(ASSOCF flags, ASSOCDATA data, LPCWSTR pwszExtra, void *pvOut, DWORD *pcbOut) override;
    STDMETHOD(GetEnum)(ASSOCF cfFlags, ASSOCENUM assocenum, LPCWSTR pszExtra, REFIID riid, LPVOID *ppvOut) override;
 
DECLARE_REGISTRY_RESOURCEID(IDR_QUERYASSOCIATIONS)
DECLARE_NOT_AGGREGATABLE(CQueryAssociations)
DECLARE_PROTECT_FINAL_CONSTRUCT()
 
BEGIN_COM_MAP(CQueryAssociations)
    COM_INTERFACE_ENTRY_IID(IID_IQueryAssociations, IQueryAssociations)
END_COM_MAP()
};