471 lines
12 KiB
C++
471 lines
12 KiB
C++
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///////////////////
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// (C) COPYRIGHT MICROSOFT CORP., 1998-1999
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//
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// FILE: SHELLEXT.CPP
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//
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// DESCRIPTION: Implements IContextMenu and IShellPropSheetExt interfaces for
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// the WIA test camera device
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//
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#include "precomp.h"
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#pragma hdrstop
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// Define a language-independent name for our menu verb
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static const CHAR g_PathVerbA[] = "ChangeRoot";
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static const WCHAR g_PathVerbW[] = L"ChangeRoot";
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/*****************************************************************************
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CShellExt::CShellExt
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******************************************************************************/
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CShellExt :: CShellExt ()
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{
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}
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/*****************************************************************************
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CShellExt::~CShellExt
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******************************************************************************/
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CShellExt::~CShellExt ()
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{
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}
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/*****************************************************************************
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CShellExt::Initialize
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Called by the shell when the user invokes context menu or property sheet for
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one of our items. For context menus the dataobject may include more than one
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selected item.
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******************************************************************************/
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STDMETHODIMP CShellExt::Initialize (LPCITEMIDLIST pidlFolder,
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LPDATAOBJECT lpdobj,
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HKEY hkeyProgID)
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{
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LONG lType = 0;
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HRESULT hr = NOERROR;
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if (!lpdobj)
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{
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return E_INVALIDARG;
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}
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// For singular selections, the WIA namespace should always provide a
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// dataobject that also supports IWiaItem
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if (FAILED(lpdobj->QueryInterface (IID_IWiaItem, reinterpret_cast<LPVOID*>(&m_pItem))))
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{
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// failing that, get the list of selected items from the data object
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UINT uItems = 0;
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LPWSTR szName;
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LPWSTR szToken;
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IWiaItem *pDevice;
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szName = GetNamesFromDataObject (lpdobj, &uItems);
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// we only support singular objects
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if (uItems != 1)
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{
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hr = E_FAIL;
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}
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else
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{
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// The name is of this format: <device id>::<item name>
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LPWSTR szToken = wcstok (szName, L":");
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if (!szToken)
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{
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hr = E_FAIL;
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}
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// Our extension only supports root items, so make sure there's no item
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// name
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else if (wcstok (NULL, L":"))
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{
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hr = E_FAIL;
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}
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else
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{
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hr = CreateDeviceFromId (szToken, &m_pItem);
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}
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}
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if (szName)
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{
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delete [] szName;
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}
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}
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if (SUCCEEDED(hr))
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{
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m_pItem->GetItemType (&lType);
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if (!(lType & WiaItemTypeRoot))
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{
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hr = E_FAIL; // we only support changing the property on the root item
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}
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}
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return hr;
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}
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/*****************************************************************************
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CShellExt::AddPages
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Called by the shell to get our property pages.
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******************************************************************************/
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STDMETHODIMP CShellExt::AddPages (LPFNADDPROPSHEETPAGE lpfnAddPage,LPARAM lParam)
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{
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HPROPSHEETPAGE hpsp;
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PROPSHEETPAGE psp;
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HRESULT hr = E_FAIL;
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// We only have 1 page.
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psp.dwSize = sizeof(psp);
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psp.dwFlags = PSP_DEFAULT;
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psp.hInstance = g_hInst;
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psp.pszTemplate = MAKEINTRESOURCE(IDD_DEVICE_PROPPAGE);
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psp.pfnDlgProc = PropPageProc;
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psp.lParam = reinterpret_cast<LPARAM>(this);
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hpsp = CreatePropertySheetPage (&psp);
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if (hpsp)
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{
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hr = (*lpfnAddPage) (hpsp, lParam) ? NOERROR:E_FAIL;
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if (SUCCEEDED(hr))
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{
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InternalAddRef (); // the propsheetpage will release us when it is destroyed
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}
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}
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return E_FAIL;
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}
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/*****************************************************************************
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CShellExt::QueryContextMenu
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Called by the shell to get our context menu strings for the selected item.
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******************************************************************************/
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STDMETHODIMP CShellExt::QueryContextMenu (HMENU hmenu,UINT indexMenu,UINT idCmdFirst,UINT idCmdLast,UINT uFlags)
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{
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MENUITEMINFO mii;
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TCHAR szPathRoot[MAX_PATH];
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// insert our only menu item at index indexMenu. Remember the cmd value.
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LoadString (g_hInst, ID_CHANGEROOT, szPathRoot, MAX_PATH);
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mii.cbSize = sizeof(mii);
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mii.fMask = MIIM_STRING | MIIM_ID;
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mii.fState = MFS_ENABLED;
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mii.wID = idCmdFirst;
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mii.dwTypeData = szPathRoot;
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m_idCmd = 0; // we only have 1 item.
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if (InsertMenuItem (hmenu, indexMenu, TRUE, &mii))
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{
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return MAKE_HRESULT(SEVERITY_SUCCESS, 0, 1);
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}
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return E_FAIL;
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}
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/*****************************************************************************
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CShellExt::InvokeCommand
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Called by the shell when the user clicks one of our menu items
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******************************************************************************/
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STDMETHODIMP CShellExt::InvokeCommand (LPCMINVOKECOMMANDINFO lpici)
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{
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UINT_PTR idCmd = reinterpret_cast<UINT_PTR>(lpici->lpVerb);
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if (idCmd == m_idCmd)
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{
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return GetNewRootPath (lpici->hwnd);
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}
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// it wasn't our verb.
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return E_FAIL;
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}
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/*****************************************************************************
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CShellExt::GetCommandString
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Called by the shell to get our language independent verb name.
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******************************************************************************/
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STDMETHODIMP CShellExt::GetCommandString (UINT_PTR idCmd, UINT uType,UINT* pwReserved,LPSTR pszName,UINT cchMax)
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{
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if (idCmd != m_idCmd)
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{
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// not our verb
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return E_FAIL;
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}
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switch (uType)
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{
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case GCS_VALIDATEA:
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if (pszName)
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{
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lstrcpyA (pszName, g_PathVerbA);
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}
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return S_OK;
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case GCS_VALIDATEW:
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if (pszName)
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{
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lstrcpyW (reinterpret_cast<LPWSTR>(pszName), g_PathVerbW);
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}
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return S_OK;
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case GCS_VERBA:
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lstrcpyA (pszName, g_PathVerbA);
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break;
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case GCS_VERBW:
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lstrcpyW (reinterpret_cast<LPWSTR>(pszName), g_PathVerbW);
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break;
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default:
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return E_FAIL;
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}
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return NOERROR;
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}
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/*****************************************************************************
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GetSetRootPath
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Utility function for setting or retrieving the test camera's root path property
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******************************************************************************/
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HRESULT GetSetRootPath (IWiaItem *pCamera, LPTSTR pszPath, BOOL bSet)
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{
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IWiaPropertyStorage *pps;
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HRESULT hr;
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PROPVARIANT pv;
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PROPSPEC ps;
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ps.ulKind = PRSPEC_PROPID;
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ps.propid = WIA_DPP_TCAM_ROOT_PATH;
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hr = pCamera->QueryInterface (IID_IWiaPropertyStorage, reinterpret_cast<LPVOID*>(&pps));
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if (SUCCEEDED(hr))
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{
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if (!bSet) // retrieval
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{
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*pszPath = TEXT('\0');
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hr = pps->ReadMultiple (1, &ps, &pv);
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if (SUCCEEDED(hr))
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{
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#ifdef UNICODE
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lstrcpy (pszPath, pv.bstrVal);
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#else
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WideCharToMultiByte (CP_ACP, 0,
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pv.bstrVal, -1,
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pszPath, MAX_PATH,
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NULL, NULL);
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#endif //UNICODE
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SysFreeString (pv.bstrVal);
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}
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}
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else // assignment
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{
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pv.vt = VT_BSTR;
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#ifdef UNICODE
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pv.bstrVal =SysAllocString ( pszPath);
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#else
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INT len = lstrlen(pszPath);
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LPWSTR pwszVal = new WCHAR[len+1];
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MultiByteToWideChar (CP_ACP, 0, pszPath, -1, pwszVal, len+1);
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pv.bstrVal =SysAllocString ( pwszVal);
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delete [] pwszVal;
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#endif // UNICODE
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hr = pps->WriteMultiple (1, &ps, &pv, 2);
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SysFreeString (pv.bstrVal);
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}
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}
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if (pps)
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{
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pps->Release ();
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}
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return hr;
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}
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/*****************************************************************************
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CShellExt::PropPageProc
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Dialog procedure for the simple property sheet page.
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******************************************************************************/
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INT_PTR CALLBACK CShellExt::PropPageProc (HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
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{
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CShellExt *pThis;
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pThis = reinterpret_cast<CShellExt *>(GetWindowLongPtr (hwnd, DWLP_USER));
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TCHAR szPath[MAX_PATH] ;
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INT_PTR iRet = TRUE;
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switch (msg)
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{
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case WM_INITDIALOG:
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pThis = reinterpret_cast<CShellExt *>(reinterpret_cast<LPPROPSHEETPAGE>(lp)->lParam);
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SetWindowLongPtr (hwnd, DWLP_USER, reinterpret_cast<LONG_PTR>(pThis));
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GetSetRootPath (pThis->m_pItem, szPath, FALSE);
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SetDlgItemText (hwnd, IDC_IMAGEROOT, szPath);
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break;
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case WM_COMMAND:
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if (LOWORD(wp) == IDC_IMAGEROOT && HIWORD(wp) == EN_CHANGE)
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{
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SendMessage(GetParent(hwnd),
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PSM_CHANGED,
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reinterpret_cast<WPARAM>(hwnd), 0);
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return TRUE;
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}
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iRet = FALSE;
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break;
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case WM_NOTIFY:
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{
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LONG lCode = PSNRET_NOERROR;
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LPPSHNOTIFY psn = reinterpret_cast<LPPSHNOTIFY>(lp);
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switch (psn->hdr.code)
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{
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case PSN_APPLY:
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// Set the new root path property
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GetDlgItemText (hwnd, IDC_IMAGEROOT, szPath, MAX_PATH);
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if (FAILED(GetSetRootPath (pThis->m_pItem, szPath, TRUE)))
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{
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::ShowMessage (hwnd, IDS_ERRCAPTION, IDS_ERRPROPSET);
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lCode = PSNRET_INVALID_NOCHANGEPAGE;
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}
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break;
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case PSN_KILLACTIVE:
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// Validate the new path is valid
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GetDlgItemText (hwnd, IDC_IMAGEROOT, szPath, MAX_PATH);
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if (! (GetFileAttributes(szPath) & FILE_ATTRIBUTE_DIRECTORY))
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{
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::ShowMessage (hwnd, IDS_ERRCAPTION, IDS_BADPATH);
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lCode = TRUE;
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}
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break;
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default:
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iRet = FALSE;
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break;
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}
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SetWindowLongPtr (hwnd, DWLP_MSGRESULT, lCode);
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}
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break;
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case WM_CLOSE:
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pThis->InternalRelease ();
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break;
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default:
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iRet = FALSE;
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break;
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}
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return iRet;
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}
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/*****************************************************************************
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BrowseCallback
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Sets the default selection in the folder selection dialog to the current
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camera image root path
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******************************************************************************/
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INT CALLBACK BrowseCallback (HWND hwnd, UINT msg, LPARAM lp, WPARAM wp)
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{
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IWiaItem *pItem = reinterpret_cast<IWiaItem*>(lp);
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if (BFFM_INITIALIZED == msg)
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{
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TCHAR szPath[MAX_PATH];
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// find the current root path
|
||
|
|
GetSetRootPath (pItem, szPath, FALSE);
|
||
|
|
// send the appropriate message to the dialog
|
||
|
|
SendMessage (hwnd,
|
||
|
|
BFFM_SETSELECTION,
|
||
|
|
reinterpret_cast<LPARAM>(szPath),
|
||
|
|
TRUE);
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*****************************************************************************
|
||
|
|
|
||
|
|
CShellExt::GetNewRootPath
|
||
|
|
|
||
|
|
Invoked in response to choosing our context menu item
|
||
|
|
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
HRESULT CShellExt::GetNewRootPath(HWND hwnd)
|
||
|
|
{
|
||
|
|
BROWSEINFO bi;
|
||
|
|
LPITEMIDLIST pidl;
|
||
|
|
TCHAR szPath[MAX_PATH];
|
||
|
|
TCHAR szTitle[MAX_PATH];
|
||
|
|
|
||
|
|
|
||
|
|
// Init the dialog with the current path
|
||
|
|
|
||
|
|
LoadString (g_hInst, IDS_BROWSETITLE, szTitle, MAX_PATH);
|
||
|
|
bi.hwndOwner = hwnd;
|
||
|
|
bi.pidlRoot = NULL;
|
||
|
|
bi.pszDisplayName = szPath;
|
||
|
|
bi.lpszTitle = szTitle;
|
||
|
|
bi.ulFlags = BIF_RETURNONLYFSDIRS | BIF_USENEWUI | BIF_EDITBOX;
|
||
|
|
bi.lpfn = NULL;
|
||
|
|
|
||
|
|
|
||
|
|
pidl = SHBrowseForFolder (&bi);
|
||
|
|
if (pidl)
|
||
|
|
{
|
||
|
|
SHGetPathFromIDList (pidl, szPath);
|
||
|
|
if (FAILED(GetSetRootPath (m_pItem, szPath, TRUE)))
|
||
|
|
{
|
||
|
|
::ShowMessage (hwnd, IDS_ERRCAPTION, IDS_ERRPROPSET);
|
||
|
|
return S_FALSE;
|
||
|
|
}
|
||
|
|
return NOERROR;
|
||
|
|
}
|
||
|
|
return S_FALSE; // don't return failure code to the shell.
|
||
|
|
}
|
||
|
|
|
||
|
|
|