131 lines
4 KiB
Plaintext
131 lines
4 KiB
Plaintext
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/*++
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Copyright (C) 1998-1999 Microsoft Corporation
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Module Name:
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oahelp.inl
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Abstract:
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OLE Automation Helpers for client code
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--*/
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#ifndef _OAHELP_INL_
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#define _OAHELP_INL_
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#pragma warning (disable : 4310) // typecasting in the following causes a warning
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class CBSTR
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{
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BSTR m_pStr;
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public:
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CBSTR() { m_pStr = 0; }
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CBSTR(LPWSTR pSrc) { m_pStr = SysAllocString(pSrc); }
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CBSTR(LPCWSTR pSrc) { m_pStr = SysAllocString((LPWSTR)pSrc); }
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~CBSTR() { if (m_pStr) SysFreeString(m_pStr); }
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operator BSTR() { return m_pStr; }
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void Unbind() { m_pStr = 0; }
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};
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class CVARIANT
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{
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VARIANT v;
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public:
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CVARIANT() { VariantInit(&v); }
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~CVARIANT() { VariantClear(&v); }
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void Clear() { VariantClear(&v); }
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operator VARIANT *() { return &v; }
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VARIANT *operator &() { return &v; }
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CVARIANT(LPWSTR pSrc) { VariantInit(&v); SetStr(pSrc); }
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CVARIANT(LONG lSrc) { VariantInit(&v); SetLONG(lSrc); }
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CVARIANT(BOOL b) { VariantInit(&v); SetBool(b); }
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CVARIANT(short i) { VariantInit(&v); SetShort(i); }
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CVARIANT(double d) { VariantInit(&v); SetDouble(d); }
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CVARIANT(BYTE b) { VariantInit(&v); SetByte(b); }
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CVARIANT(IDispatch * pDisp) { VariantInit(&v); pDisp->AddRef(); SetDispatch(pDisp); }
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void SetStr(LPWSTR pSrc)
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{ Clear(); V_VT(&v) = (WORD)(pSrc != NULL ? VT_BSTR : VT_NULL);
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V_BSTR(&v) = pSrc ? SysAllocString(pSrc) : 0;
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}
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LPWSTR GetStr() { return V_VT(&v) == VT_BSTR ? V_BSTR(&v) : 0; }
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operator LPWSTR() { return V_VT(&v) == VT_BSTR ? V_BSTR(&v) : 0; }
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void SetLONG(LONG lSrc) { Clear(); V_VT(&v) = VT_I4; V_I4(&v) = lSrc; }
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LONG GetLONG() { return V_I4(&v); }
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operator LONG() { return V_I4(&v); }
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void SetDouble(double dSrc) { Clear(); V_VT(&v) = VT_R8; V_R8(&v) = dSrc; }
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double GetDouble() { return V_R8(&v); }
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operator double() { return V_R8(&v); }
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void SetByte(BYTE bySrc) { Clear(); V_VT(&v) = VT_UI1; V_UI1(&v) = bySrc; }
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BYTE GetByte() { return V_UI1(&v); }
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operator BYTE() { return V_UI1(&v); }
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void SetBool(BOOL b) { V_VT(&v) = VT_BOOL; V_BOOL(&v) = (VARIANT_BOOL)(b ? VARIANT_TRUE : VARIANT_FALSE); }
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BOOL GetBool() { return (BOOL)(V_BOOL(&v) == VARIANT_TRUE); }
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operator BOOL() { return V_BOOL(&v); }
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void SetDispatch(IDispatch* pDisp) { V_VT(&v) = VT_DISPATCH; V_DISPATCH(&v) = pDisp; }
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IDispatch * GetDispatch() { return V_DISPATCH(&v); }
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void SetUnknown(IUnknown* pUnk) { V_VT(&v) = VT_UNKNOWN; V_UNKNOWN(&v) = pUnk; }
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IUnknown * GetUnknown() { return V_UNKNOWN(&v); }
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void SetShort(short i) { V_VT(&v) = VT_I2; V_I2(&v) = i; }
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short GetShort() { return V_I2(&v); }
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operator short() { return V_I2(&v); }
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VARTYPE GetType() { return V_VT(&v); }
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void SetArray(SAFEARRAY *p, VARTYPE vt) { Clear(); V_VT(&v) = vt; V_ARRAY(&v) = p; }
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// This function acquires the SAFEARRAY pointer and it is no longer owned
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// by the caller.
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operator SAFEARRAY *() { return (V_VT(&v) & VT_ARRAY ? V_ARRAY(&v) : 0); }
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void Unbind() { VariantInit(&v); }
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};
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class CSAFEARRAY
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{
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SAFEARRAY *p;
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public:
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CSAFEARRAY(VARTYPE v, int nSize)
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{
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SAFEARRAYBOUND rgsabound[1];
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rgsabound[0].lLbound = 0;
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rgsabound[0].cElements = nSize;
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p = SafeArrayCreate(v, 1, rgsabound);
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}
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~CSAFEARRAY() { if (p) SafeArrayDestroy(p); }
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CSAFEARRAY(SAFEARRAY *pSrc) { p = pSrc; }
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HRESULT Put(long nLocation, LPVOID pData) {
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return SafeArrayPutElement(p, &nLocation, pData);
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}
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HRESULT Get(long nLocation, LPVOID pData) {
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return SafeArrayGetElement(p, &nLocation, pData);
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}
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HRESULT Access(void **pData) { return SafeArrayAccessData(p, pData); }
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HRESULT Unaccess() { return SafeArrayUnaccessData(p); }
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operator SAFEARRAY *() { return p; }
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long GetNumElements() { long upper; SafeArrayGetUBound(p, 1, &upper); return upper + 1; }
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void Unbind() { p = 0; }
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};
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#pragma warning (default : 4310) // restore
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#endif
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