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Annotation of mstools/ole20/samples/dispcalc/dispcalc.h, revision 1.1

1.1     ! root        1: /*** 
        !             2: *dispcalc.h
        !             3: *
        !             4: *  Copyright (C) 1992, Microsoft Corporation.  All Rights Reserved.
        !             5: *  Information Contained Herein Is Proprietary and Confidential.
        !             6: *
        !             7: *Purpose:
        !             8: *  UNDONE
        !             9: *
        !            10: *
        !            11: *Implementation Notes:
        !            12: *
        !            13: *****************************************************************************/
        !            14: 
        !            15: #include "clsid.h"
        !            16: 
        !            17: #ifndef CLASS
        !            18: # ifdef __TURBOC__
        !            19: #  define CLASS class huge
        !            20: # else
        !            21: #  define CLASS class FAR
        !            22: # endif
        !            23: #endif
        !            24: 
        !            25: #pragma warning(disable:4355)
        !            26: 
        !            27: #define DIM(X) (sizeof(X)/sizeof(X[0]))
        !            28: 
        !            29: 
        !            30: enum operators {
        !            31:     OP_NONE = 0,
        !            32:     OP_PLUS,
        !            33:     OP_MINUS,
        !            34:     OP_MULT,
        !            35:     OP_DIV
        !            36: };
        !            37: 
        !            38: 
        !            39: CLASS CCalc : public IUnknown {
        !            40: public:
        !            41:     static CCalc FAR* Create();
        !            42: 
        !            43: 
        !            44:     STDMETHOD(QueryInterface)(REFIID riid, void FAR* FAR* ppv);
        !            45:     STDMETHOD_(ULONG, AddRef)(void);
        !            46:     STDMETHOD_(ULONG, Release)(void);
        !            47: 
        !            48: 
        !            49:     // Introduced "calculator" interface
        !            50:     //
        !            51:     // This nested class implementes core arithmetic functionality
        !            52:     // (such as it is) *and* is the interface that will be exposed via
        !            53:     // IDispatch for external programmability.
        !            54:     //
        !            55:     CLASS CArith {
        !            56:     public:
        !            57: 
        !            58:       STDMETHOD_(void, put_Accum)(long l);
        !            59:       STDMETHOD_(long, get_Accum)(void);
        !            60:       STDMETHOD_(void, put_Opnd)(long l);
        !            61:       STDMETHOD_(long, get_Opnd)(void);
        !            62:       STDMETHOD_(void, put_Op)(short op);
        !            63:       STDMETHOD_(short, get_Op)(void);
        !            64:       STDMETHOD_(BOOL, Eval)(void);
        !            65:       STDMETHOD_(void, Clear)(void);
        !            66:       STDMETHOD_(void, Display)(void);
        !            67:       STDMETHOD_(void, Quit)(void);
        !            68:       STDMETHOD_(BOOL, Button)(BSTR button);
        !            69: 
        !            70:       // the following method is internal, and not exposed for programmability
        !            71:       BOOL ButtonPush(int button);
        !            72: 
        !            73:       CArith(CCalc FAR* pcalc){
        !            74:        m_pcalc = pcalc;
        !            75:        Clear();
        !            76:       }
        !            77: 
        !            78:       enum states { STATE_LOPND, STATE_OP, STATE_ROPND, STATE_EVAL };
        !            79: 
        !            80:     private:
        !            81:       CCalc FAR* m_pcalc;
        !            82: 
        !            83:       short    m_op;
        !            84:       long     m_opnd;
        !            85:       long     m_accum;
        !            86:       enum states m_state;
        !            87:     };
        !            88:     friend CArith;
        !            89:     CArith m_arith;
        !            90: 
        !            91: 
        !            92:     HWND m_hwnd;
        !            93: 
        !            94:     CCalc() : m_arith(this)
        !            95:     {
        !            96:       m_refs = 1;
        !            97:       m_hwnd = 0;
        !            98:       m_punkStdDisp = NULL;
        !            99:     }
        !           100: 
        !           101: private:
        !           102:     ULONG m_refs;
        !           103:     IUnknown FAR* m_punkStdDisp;
        !           104: };
        !           105: 
        !           106: 
        !           107: // the following enum defines method indices used by the
        !           108: // default IDispatch implementation - DispInvoke().
        !           109: //
        !           110: // Note: these must match the order of the preceeding declarations
        !           111: //
        !           112: enum IMETH_CARITH {
        !           113:     IMETH_PUTACCUM = 0,
        !           114:     IMETH_GETACCUM,
        !           115:     IMETH_PUTOPERAND,
        !           116:     IMETH_GETOPERAND,
        !           117:     IMETH_PUTOPERATOR,
        !           118:     IMETH_GETOPERATOR,
        !           119:     IMETH_EVAL,
        !           120:     IMETH_CLEAR,
        !           121:     IMETH_DISPLAY,
        !           122:     IMETH_QUIT,
        !           123:     IMETH_BUTTON,
        !           124: 
        !           125:     // Define the "property" indices. these are defined to be
        !           126:     // the first index in a set/get property method pair. These
        !           127:     // definitions are used to build the METHODDATA that drives
        !           128:     // our implementation of IDispatch. see cdisp.cpp.
        !           129:     //
        !           130:     IMETH_ACCUM    = IMETH_PUTACCUM,
        !           131:     IMETH_OPERAND  = IMETH_PUTOPERAND,
        !           132:     IMETH_OPERATOR = IMETH_PUTOPERATOR
        !           133: };
        !           134: 
        !           135: // the following enum defines the IDs used by IDispatch
        !           136: //
        !           137: // Note: these values do *not* depend on order of declaration,
        !           138: // but are sensitive to the kind of the method - ie, if a get/set
        !           139: // method pair implements a property, then they need to share
        !           140: // an ID.
        !           141: //
        !           142: // Note: by assigning "accum" the ID 'DISPID_VALUE', we are
        !           143: // choosing to expose it as the default "value" property.
        !           144: //
        !           145: enum IDMEMBER_CARITH {
        !           146:     IDMEMBER_ACCUM = DISPID_VALUE,     // the default property
        !           147:     IDMEMBER_OPERAND,
        !           148:     IDMEMBER_OPERATOR,
        !           149:     IDMEMBER_EVAL,
        !           150:     IDMEMBER_CLEAR,
        !           151:     IDMEMBER_DISPLAY,
        !           152:     IDMEMBER_QUIT,
        !           153:     IDMEMBER_BUTTON
        !           154: };
        !           155: 
        !           156: 
        !           157: // the CCalc Class Factory
        !           158: //
        !           159: CLASS CCalcCF : public IClassFactory {
        !           160: public:
        !           161:     static IClassFactory FAR* Create();
        !           162: 
        !           163:     STDMETHOD(QueryInterface)(REFIID riid, void FAR* FAR* ppv);
        !           164:     STDMETHOD_(ULONG, AddRef)(void);
        !           165:     STDMETHOD_(ULONG, Release)(void);
        !           166: 
        !           167:     STDMETHOD(CreateInstance)(
        !           168:       IUnknown FAR* punkOuter, REFIID riid, void FAR* FAR* ppv);
        !           169:     STDMETHOD(LockServer)(BOOL fLock);
        !           170: 
        !           171:     CCalcCF() { m_refs = 1; }
        !           172: 
        !           173: private:
        !           174:     ULONG m_refs;
        !           175: };

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