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#ifndef SMARTVARS_H
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#define SMARTVARS_H
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#undef _INC_CRTDBG
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#include <assert.h>
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#include <Atl/atlbase.h>
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/**
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*
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USAGE :
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SafeBSTRArray names(1);
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SafeLongArray types(1);
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SafeBSTRArray vals(1);
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names[0] = T2BSTR(_T("ReplaceFile"));
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types[0] = swMacroFeatureParamTypeString;
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vals[0] = m_replaceFile.AllocSysString();
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CComVariant paramNames = names;
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CComVariant paramTypes = types;
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CComVariant paramValues = vals;
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LPDISPATCH outFeat = NULL;
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HRESULT hres = m_Part->InsertComFeature(T2BSTR(_T("{04B74DF2-ACBA-4218-887A-F42140F312E0}")),
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paramNames, paramTypes, paramValues, &outFeat);
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if (outFeat)
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outFeat->Release();
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*/
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template <class T,int type> class SafeArray
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{
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public:
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SafeArray(VARIANT *input):
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m_input(input),
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m_access(false),
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m_bCreate(false),
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m_pSafeArray(NULL),
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m_arrayData(NULL),
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m_result(S_OK)
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{
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if(m_input != NULL)
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{
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if (V_VT(m_input) != VT_EMPTY)
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{
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m_pSafeArray = V_ARRAY (m_input);
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m_result = SafeArrayAccessData ( m_pSafeArray, (void HUGEP**)&m_arrayData);
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m_access = m_result == S_OK ;
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}
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else
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m_access = true;
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}
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else
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{
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assert(FALSE);
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m_input = &m_target;
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}
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}
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SafeArray(const VARIANT &input) :
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m_access(true),
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m_bCreate(false),
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m_pSafeArray(NULL),
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m_arrayData(NULL),
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m_result(S_OK)
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{
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m_input = (VARIANT *) &input;
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if (V_VT(m_input) != VT_EMPTY)
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{
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m_pSafeArray = V_ARRAY (m_input);
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m_result = SafeArrayAccessData ( m_pSafeArray, (void HUGEP**)&m_arrayData);
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m_access = m_result == S_OK ;
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}
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else
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m_access = true;
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}
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SafeArray(unsigned int size,unsigned int dims = 1):
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m_input(&m_target),
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m_access(false),
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m_bCreate(true),
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m_pSafeArray(NULL),
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m_arrayData(NULL),
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m_result(S_OK)
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{
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assert(size >= 0);
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if(size > 0)
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{
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m_rgsabound[0].lLbound = 0;
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m_rgsabound[0].cElements = (int) size;
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m_pSafeArray = SafeArrayCreate(type, (int)dims, m_rgsabound);
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V_VT(m_input) = VT_ARRAY | type;
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m_result = SafeArrayAccessData( m_pSafeArray, (void HUGEP**)&m_arrayData);
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m_access = m_result == S_OK ;
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if(!m_access)
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V_VT(m_input) = VT_EMPTY;
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}
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else
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{
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V_VT(m_input) = VT_EMPTY;
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m_access = true;
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}
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}
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inline HRESULT status(){return m_result;}
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inline int getSize(int index = 0) {return (m_access&&m_pSafeArray)?m_pSafeArray->rgsabound[index].cElements:0;}
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~SafeArray(){UnaccessData();}
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operator T* () {assert(m_access);return m_arrayData;}
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operator VARIANT () {assert(m_access);UnaccessData(); return *m_input;}
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T & operator[](int i) {assert(m_access&&m_arrayData);return m_arrayData[i];}
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private:
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void UnaccessData(){
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if(m_access){
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m_result = SafeArrayUnaccessData( m_pSafeArray );
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if(m_bCreate && m_result == S_OK)
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V_ARRAY(m_input) = m_pSafeArray;
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m_access = false;
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}
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}
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bool m_bCreate;
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bool m_access;
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VARIANT *m_input;
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VARIANT m_target;
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T *m_arrayData ;
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SAFEARRAY *m_pSafeArray;
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SAFEARRAYBOUND m_rgsabound[1];
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HRESULT m_result;
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};
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typedef SafeArray<double, VT_R8> SafeDoubleArray ;
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typedef SafeArray<float, VT_R4> SafeFloatArray ;
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typedef SafeArray<long, VT_I4> SafeLongArray ;
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typedef SafeArray<BSTR, VT_BSTR> SafeBSTRArray ;
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typedef SafeArray<LPDISPATCH, VT_DISPATCH> SafeDISPATCHArray;
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typedef SafeArray<LPVARIANT, VT_VARIANT> SafeVARIANTArray;
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/*
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assing SafeArrays in C++
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Be careful when managing SafeArray memory. If you receive a SafeArray from the SolidWorks product, you are responsible for destroying it. Also, if you pass a SafeArray to the SolidWorks product, SolidWorks does not destroy the SafeArray; you are responsible for destroying it.
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See:
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Return Values for information and examples of handling SafeArray and VARIANT return values.
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A template class for VARIANT SafeArrays on the SolidWorks API Support Web site, http://www.solidworks.com/pages/services/APITips.html.
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*/
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#endif//SMARTVARS_H
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