181 lines
4.1 KiB
C++
181 lines
4.1 KiB
C++
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// wiatestDoc.cpp : implementation of the CWiatestDoc class
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//
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#include "stdafx.h"
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#include "wiatest.h"
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#include "wiatestDoc.h"
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#include "wiaselect.h"
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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/////////////////////////////////////////////////////////////////////////////
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// CWiatestDoc
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IMPLEMENT_DYNCREATE(CWiatestDoc, CDocument)
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BEGIN_MESSAGE_MAP(CWiatestDoc, CDocument)
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//{{AFX_MSG_MAP(CWiatestDoc)
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// NOTE - the ClassWizard will add and remove mapping macros here.
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// DO NOT EDIT what you see in these blocks of generated code!
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//}}AFX_MSG_MAP
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END_MESSAGE_MAP()
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/////////////////////////////////////////////////////////////////////////////
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// CWiatestDoc construction/destruction
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CWiatestDoc::CWiatestDoc()
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{
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m_pIRootItem = NULL;
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m_pICurrentItem = NULL;
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}
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CWiatestDoc::~CWiatestDoc()
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{
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ReleaseItems();
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}
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BOOL CWiatestDoc::OnNewDocument()
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{
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BOOL bSuccess = FALSE;
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if (!CDocument::OnNewDocument())
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return bSuccess;
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// select a WIA device
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CWiaselect SelectDeviceDlg;
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if(SelectDeviceDlg.DoModal() != IDOK){
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// no device was selected, so do not create a new document
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return bSuccess;
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}
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// a WIA device was selected, so continue
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HRESULT hr = S_OK;
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IWiaDevMgr *pIWiaDevMgr = NULL;
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hr = CoCreateInstance(CLSID_WiaDevMgr, NULL, CLSCTX_LOCAL_SERVER, IID_IWiaDevMgr,(void**)&pIWiaDevMgr);
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if(FAILED(hr)){
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// creation of device manager failed, so we can not continue
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ErrorMessageBox(IDS_WIATESTERROR_COCREATEWIADEVMGR,hr);
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return bSuccess;
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}
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// create WIA device
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hr = pIWiaDevMgr->CreateDevice(SelectDeviceDlg.m_bstrSelectedDeviceID, &m_pIRootItem);
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if(FAILED(hr)){
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bSuccess = FALSE;
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// creation of device failed, so we can not continue
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ErrorMessageBox(IDS_WIATESTERROR_CREATEDEVICE,hr);
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} else {
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bSuccess = TRUE;
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}
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// release WIA device manager
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pIWiaDevMgr->Release();
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// set document's title to be the WIA device's name
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TCHAR szDeviceName[MAX_PATH];
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GetDeviceName(szDeviceName);
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SetTitle(szDeviceName);
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return bSuccess;
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}
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/////////////////////////////////////////////////////////////////////////////
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// CWiatestDoc serialization
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void CWiatestDoc::Serialize(CArchive& ar)
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{
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if (ar.IsStoring())
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{
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// TODO: add storing code here
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}
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else
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{
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// TODO: add loading code here
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}
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}
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/////////////////////////////////////////////////////////////////////////////
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// CWiatestDoc diagnostics
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#ifdef _DEBUG
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void CWiatestDoc::AssertValid() const
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{
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CDocument::AssertValid();
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}
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void CWiatestDoc::Dump(CDumpContext& dc) const
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{
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CDocument::Dump(dc);
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}
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#endif //_DEBUG
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/////////////////////////////////////////////////////////////////////////////
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// CWiatestDoc commands
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void CWiatestDoc::ReleaseItems()
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{
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// is CurrentItem different from RootItem?
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if(m_pICurrentItem != m_pIRootItem){
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// release CurrentItem
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if(m_pICurrentItem){
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m_pICurrentItem->Release();
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}
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// release RootItem
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if(m_pIRootItem){
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m_pIRootItem->Release();
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}
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} else {
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// CurrentItem is the RootItem
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// release RootItem and set CurrentItem to NULL
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if(m_pIRootItem){
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m_pIRootItem->Release();
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}
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}
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m_pIRootItem = NULL;
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m_pICurrentItem = NULL;
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}
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HRESULT CWiatestDoc::GetDeviceName(LPTSTR szDeviceName)
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{
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HRESULT hr = S_OK;
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if(NULL == m_pIRootItem){
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return E_FAIL;
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}
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CWiahelper WIA;
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hr = WIA.SetIWiaItem(m_pIRootItem);
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if(SUCCEEDED(hr)){
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hr = WIA.ReadPropertyString(WIA_DIP_DEV_NAME,szDeviceName);
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}
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return hr;
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}
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HRESULT CWiatestDoc::SetCurrentIWiaItem(IWiaItem *pIWiaItem)
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{
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HRESULT hr = S_OK;
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if(m_pICurrentItem){
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m_pICurrentItem->Release();
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m_pICurrentItem = NULL;
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}
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// AddRef the item, becuase we are storing it
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pIWiaItem->AddRef();
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// set the current item
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m_pICurrentItem = pIWiaItem;
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return hr;
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}
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