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/***
*cdisp.cpp
*
* Copyright (C) 1992-93, Microsoft Corporation. All Rights Reserved.
* Information Contained Herein Is Proprietary and Confidential.
*
*Purpose:
* This file implements a trivial class that supports IDispatch, and
* exposes a single property.
*
*Revision History:
*
* [00] 10-Apr-93 bradlo: Created.
*
*Implementation Notes:
*
*****************************************************************************/
#include "common.h"
#include "cdisp.h"
CDisp::CDisp()
{
m_refs = 0;
V_VT(&m_var) = VT_BSTR;
V_BSTR(&m_var) = SysAllocString(OLESTR("13.14"));
}
HRESULT
CDisp::Create(IDispatch FAR* FAR* ppdisp)
{
CDisp FAR* pdisp;
if((pdisp = new FAR CDisp()) == NULL)
return ResultFromScode(E_OUTOFMEMORY);
pdisp->AddRef();
*ppdisp = (IDispatch FAR*)pdisp;
return NOERROR;
}
STDMETHODIMP
CDisp::QueryInterface(REFIID riid, void FAR* FAR* ppv)
{
if(!IsEqualIID(riid, IID_IUnknown))
if(!IsEqualIID(riid, IID_IDispatch))
return ResultFromScode(E_NOINTERFACE);
*ppv = this;
AddRef();
return NOERROR;
}
STDMETHODIMP_(unsigned long)
CDisp::AddRef()
{
return ++m_refs;
}
STDMETHODIMP_(unsigned long)
CDisp::Release()
{
if(--m_refs == 0){
VariantClear(&m_var);
delete this;
return 0;
}
return m_refs;
}
STDMETHODIMP
CDisp::GetTypeInfoCount(unsigned int FAR* pctinfo)
{
*pctinfo = NULL;
return NOERROR;
}
STDMETHODIMP
CDisp::GetTypeInfo(
unsigned int itinfo,
LCID lcid,
ITypeInfo FAR* FAR* pptinfo)
{
UNUSED(lcid);
UNUSED(itinfo);
UNUSED(pptinfo);
return ResultFromScode(DISP_E_BADINDEX);
}
STDMETHODIMP
CDisp::GetIDsOfNames(
REFIID riid,
OLECHAR FAR* FAR* rgszNames,
unsigned int cNames,
LCID lcid,
DISPID FAR* rgdispid)
{
unsigned int u;
HRESULT hresult;
UNUSED(lcid);
if(!IsEqualIID(riid, IID_NULL))
return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
if(cNames == 0)
return ResultFromScode(E_INVALIDARG);
rgdispid[0] =
(STRICMP(STRING(rgszNames[0]), TSTR("value")))
? DISPID_UNKNOWN : DISPID_VALUE;
hresult = NOERROR;
if(cNames > 1){
hresult = ResultFromScode(DISP_E_UNKNOWNNAME);
for(u = 1; u < cNames; ++u)
rgdispid[u] = DISPID_UNKNOWN;
}
return hresult;
}
STDMETHODIMP
CDisp::Invoke(
DISPID dispidMember,
REFIID riid,
LCID lcid,
unsigned short wFlags,
DISPPARAMS FAR* pdispparams,
VARIANT FAR* pvarResult,
EXCEPINFO FAR* pexcepinfo,
unsigned int FAR* puArgErr)
{
VARIANT var;
unsigned int uArgErr;
VARIANT varResult;
UNUSED(lcid);
UNUSED(pexcepinfo);
if(!IsEqualIID(riid, IID_NULL))
return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
if(puArgErr == NULL)
puArgErr = &uArgErr;
if(pvarResult == NULL)
pvarResult = &varResult;
if(dispidMember == DISPID_VALUE){
if(wFlags & DISPATCH_PROPERTYPUT){
if(pdispparams->cArgs != 1)
return ResultFromScode(DISP_E_BADPARAMCOUNT);
IfFailRet(VariantCopyInd(&var, &pdispparams->rgvarg[0]));
put_value(var);
IfFailRet(VariantClear(&var));
return NOERROR;
}
if(wFlags & DISPATCH_PROPERTYGET){
if(pdispparams->cArgs != 0)
return ResultFromScode(DISP_E_BADPARAMCOUNT);
var = get_value();
IfFailRet(VariantCopy(pvarResult, &var));
IfFailRet(VariantClear(&var));
return NOERROR;
}
}
return ResultFromScode(DISP_E_MEMBERNOTFOUND);
}
STDMETHODIMP_(void)
CDisp::put_value(VARIANT var)
{
VariantClear(&m_var);
VariantCopy(&m_var, &var);
}
STDMETHODIMP_(VARIANT)
CDisp::get_value()
{
VARIANT var;
VariantInit(&var);
VariantCopy(&var, &m_var);
return var;
}
/***************************************************************/
/* WIN32 Unicode Support */
/***************************************************************/
#if OE_WIN32 && 0
CDispW::CDispW()
{
m_refs = 0;
V_VT(&m_var) = VT_WBSTR;
V_WBSTR(&m_var) = SysAllocStringW(L"13.14");
}
HRESULT
CDispW::Create(IDispatchW FAR* FAR* ppdisp)
{
CDispW FAR* pdisp;
if((pdisp = new FAR CDispW()) == NULL)
return ResultFromScode(E_OUTOFMEMORY);
pdisp->AddRef();
*ppdisp = (IDispatchW FAR*)pdisp;
return NOERROR;
}
STDMETHODIMP
CDispW::QueryInterface(REFIID riid, void FAR* FAR* ppv)
{
if(riid == IID_IUnknown || riid == IID_IDispatchW){
*ppv = this;
AddRef();
return NOERROR;
}
return ResultFromScode(E_NOINTERFACE);
}
STDMETHODIMP_(unsigned long)
CDispW::AddRef()
{
return ++m_refs;
}
STDMETHODIMP_(unsigned long)
CDispW::Release()
{
if(--m_refs == 0){
VariantClear(&m_var);
delete this;
return 0;
}
return m_refs;
}
STDMETHODIMP
CDispW::GetTypeInfoCount(unsigned int FAR* pctinfo)
{
*pctinfo = NULL;
return NOERROR;
}
STDMETHODIMP
CDispW::GetTypeInfo(
unsigned int itinfo,
LCID lcid,
ITypeInfoW FAR* FAR* pptinfo)
{
UNUSED(lcid);
UNUSED(pptinfo);
return ResultFromScode(DISP_E_BADINDEX);
}
STDMETHODIMP
CDispW::GetIDsOfNames(
REFIID riid,
WCHAR FAR* FAR* rgszNames,
unsigned int cNames,
LCID lcid,
DISPID FAR* rgdispid)
{
unsigned int u;
HRESULT hresult;
UNUSED(lcid);
if(riid != IID_NULL)
return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
if(cNames == 0)
return ResultFromScode(E_INVALIDARG);
rgdispid[0] =
(lstrcmpW(rgszNames[0], L"value"))
? DISPID_UNKNOWN : DISPID_VALUE;
hresult = NOERROR;
if(cNames > 1){
hresult = ResultFromScode(DISP_E_UNKNOWNNAME);
for(u = 1; u < cNames; ++u)
rgdispid[u] = DISPID_UNKNOWN;
}
return hresult;
}
STDMETHODIMP
CDispW::Invoke(
DISPID dispidMember,
REFIID riid,
LCID lcid,
unsigned short wFlags,
DISPPARAMS FAR* pdispparams,
VARIANT FAR* pvarResult,
WEXCEPINFO FAR* pexcepinfo,
unsigned int FAR* puArgErr)
{
VARIANT var;
unsigned int uArgErr;
VARIANT varResult;
UNUSED(lcid);
if(riid != IID_NULL)
return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
if(puArgErr == NULL)
puArgErr = &uArgErr;
if(pvarResult == NULL)
pvarResult = &varResult;
if(dispidMember == DISPID_VALUE){
if(wFlags & DISPATCH_PROPERTYPUT){
if(pdispparams->cArgs != 1)
return ResultFromScode(DISP_E_BADPARAMCOUNT);
IfFailRet(VariantCopyInd(&var, &pdispparams->rgvarg[0]));
put_value(var);
IfFailRet(VariantClear(&var));
return NOERROR;
}
if(wFlags & DISPATCH_PROPERTYGET){
if(pdispparams->cArgs != 0)
return ResultFromScode(DISP_E_BADPARAMCOUNT);
var = get_value();
IfFailRet(VariantCopy(pvarResult, &var));
IfFailRet(VariantClear(&var));
return NOERROR;
}
}
return ResultFromScode(DISP_E_MEMBERNOTFOUND);
}
STDMETHODIMP_(void)
CDispW::put_value(VARIANT var)
{
VariantClear(&m_var);
VariantCopy(&m_var, &var);
}
STDMETHODIMP_(VARIANT)
CDispW::get_value()
{
VARIANT var;
VariantInit(&var);
VariantCopy(&var, &m_var);
return var;
}
#endif
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