How to: Implement IContextMenu and IObjectWithSite

The following C++ code snippet demonstrates the structure of the shortcut menu extension component class definition.

class CMyComp : public IContextMenu, IObjectWithSite
{
    public:
        CMyComp();   // Constructor.
        ~CMyComp();  // Destructor.

        // IUnknown methods.
        STDMETHOD (QueryInterface) (REFIID riid, LPVOID *ppv);
        STDMETHOD_(ULONG, AddRef)  (void);
        STDMETHOD_(ULONG Release)  (void);

        // IContextMenu methods.
        STDMETHOD (GetCommandString) (UINT idCmd, UINT uFlags,
                   UINT *pwReserved,LPSTR pszName, UINT cchMx);
        STDMETHOD (InvokeCommand)    (LPCMINVOKECOMMANDINFO pici);
        STDMETHOD (QueryContextMenu) (hmenu, UINT indexMenu,
                   UINT idCmdFirs, UINT idCmdLast, UINT uFlags);

        // IObjectWithSite methods.
        STDMETHOD (GetSite) (REFIID riid, void **ppvSite);
        STDMETHOD (SetSite) (IUnknown *pUnkSite);

        // CMyComp methods.
        // None.

    protected:
        ULONG    m_cRef;       // Reference count.
        IUnknown m_punkSite;   // Site (owner) pointer.
};

See Also

How to: Extend Shortcut Menus

How to: Implement IDataObject

How to: Register a File System Shortcut Menu

Shortcut Menu Overview

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