396 lines
8.7 KiB
C++
396 lines
8.7 KiB
C++
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1993.
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// File: ext.cxx
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// Contents: Shell extension handler for network objects
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// Classes: CNetObj
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// History: 26-Sep-95 BruceFo Created
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#include "headers.hxx"
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#pragma hdrstop
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#include <pages.hxx>
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#define DONT_WANT_SHELLDEBUG
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#include <shlobjp.h>
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#include "resource.h"
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#include "ext.hxx"
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#include "util.hxx"
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// Shell DLL communication
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typedef
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UINT
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(WINAPI *SHELLGETNETRESOURCE)(
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HNRES hnres,
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UINT iItem,
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LPNETRESOURCE pnresOut,
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UINT cbMax
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);
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HINSTANCE g_hShellLibrary = NULL;
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SHELLGETNETRESOURCE g_pFuncGNR = NULL;
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UINT g_cfNetResource = 0;
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BOOL LoadShellDllEntries(VOID);
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/*
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* Helper functions used to communicate with shell32.dll
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*/
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BOOL LoadShellDllEntries(VOID)
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{
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if (g_hShellLibrary)
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{
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return TRUE;
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}
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g_hShellLibrary = LoadLibrary(TEXT("shell32.dll"));
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if (NULL == g_hShellLibrary)
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{
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return FALSE;
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}
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g_pFuncGNR = (SHELLGETNETRESOURCE)GetProcAddress(g_hShellLibrary, (LPSTR)(MAKELONG(SHGetNetResourceORD, 0)));
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if (NULL == g_pFuncGNR)
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{
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return FALSE;
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}
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return TRUE;
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}
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// Member: CNetObj::CNetObj
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// Synopsis: Constructor
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// History: 4-Apr-95 BruceFo Created
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CNetObj::CNetObj(
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VOID
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)
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:
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_uRefs(0),
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_pDataObject(NULL),
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_hkeyProgID(NULL)
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{
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INIT_SIG(CNetObj);
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AddRef(); // give it the correct initial reference count. add to the DLL reference count
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}
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// Member: CNetObj::~CNetObj
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// Synopsis: Destructor
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// History: 4-Apr-95 BruceFo Created
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CNetObj::~CNetObj()
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{
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CHECK_SIG(CNetObj);
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if (_pDataObject)
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{
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_pDataObject->Release();
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}
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if (_hkeyProgID)
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{
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LONG l = RegCloseKey(_hkeyProgID);
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if (l != ERROR_SUCCESS)
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{
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appDebugOut((DEB_ERROR, "CNetObj::destructor. Error closing registry key, 0x%08lx\n", l));
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}
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_hkeyProgID = NULL;
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}
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}
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// Member: CNetObj::Initialize
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// Derivation: IShellExtInit
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// Synopsis: Initialize the shell extension. Stashes away the argument data.
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// History: 4-Apr-95 BruceFo Created
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// Notes: This method can be called more than once.
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STDMETHODIMP
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CNetObj::Initialize(
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LPCITEMIDLIST pidlFolder,
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LPDATAOBJECT pDataObject,
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HKEY hkeyProgID
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)
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{
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CHECK_SIG(CNetObj);
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CNetObj::~CNetObj();
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if (!LoadShellDllEntries())
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{
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return E_FAIL;
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}
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// Duplicate the pDataObject pointer
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_pDataObject = pDataObject;
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if (pDataObject)
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{
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pDataObject->AddRef();
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}
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// Duplicate the handle
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if (hkeyProgID)
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{
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LONG l = RegOpenKeyEx(hkeyProgID, NULL, 0L, MAXIMUM_ALLOWED, &_hkeyProgID);
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if (l != ERROR_SUCCESS)
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{
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appDebugOut((DEB_ERROR, "CNetObj::Initialize. Error duplicating registry key, 0x%08lx\n", l));
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}
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}
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return S_OK;
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}
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// Member: CNetObj::AddPages
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// Derivation: IShellPropSheetExt
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// Synopsis: (from shlobj.h)
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// "The explorer calls this member function when it finds a
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// registered property sheet extension for a particular type
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// of object. For each additional page, the extension creates
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// a page object by calling CreatePropertySheetPage API and
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// calls lpfnAddPage.
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// Arguments: lpfnAddPage -- Specifies the callback function.
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// lParam -- Specifies the opaque handle to be passed to the
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// callback function.
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// History: 4-Apr-95 BruceFo Created
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STDMETHODIMP
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CNetObj::AddPages(
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LPFNADDPROPSHEETPAGE lpfnAddPage,
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LPARAM lParam
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)
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{
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CHECK_SIG(CNetObj);
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// Call IDataObject::GetData asking for a g_cfNetResource (i.e., HNRES).
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STGMEDIUM medium;
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FORMATETC fmte =
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{
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g_cfNetResource
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? g_cfNetResource
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: (g_cfNetResource = RegisterClipboardFormat(CFSTR_NETRESOURCES)),
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NULL,
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DVASPECT_CONTENT,
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-1,
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TYMED_HGLOBAL
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};
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appAssert(NULL != _pDataObject);
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HRESULT hr = _pDataObject->GetData(&fmte, &medium);
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CHECK_HRESULT(hr);
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if (FAILED(hr))
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{
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return hr;
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}
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// Now I have a 'medium' to release
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hr = S_OK;
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HNRES hnres = medium.hGlobal;
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// Get number of selected items
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if (NULL != g_pFuncGNR)
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{
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UINT cItems = (*g_pFuncGNR)(hnres, (UINT)-1, NULL, 0);
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if (cItems > 0)
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{
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// Retrieve NETRESOURCE object from clipboard
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LPNETRESOURCE pNetRes = (LPNETRESOURCE)_bufNetResource;
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UINT ret = (*g_pFuncGNR)(hnres, 0, pNetRes, MAX_ONE_RESOURCE); // Get first item
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if (ret == 0)
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{
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// bad hnres?
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appDebugOut((DEB_TRACE, "CNetObj::AddPages. SHGetNetResource returned 0\n"));
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// BUGBUG this is really error
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}
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else if (ret > MAX_ONE_RESOURCE)
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{
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// BUGBUG: Resize the buf and try again
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appDebugOut((DEB_TRACE, "CNetObj::AddPages. buffer too small, needs to be %d\n", ret));
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}
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else
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{
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LPTSTR pszTemplate = NULL;
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if (RESOURCEDISPLAYTYPE_NETWORK == pNetRes->dwDisplayType)
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{
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pszTemplate = MAKEINTRESOURCE(IDD_NETWORK_SUMMARYINFO);
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}
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else if (RESOURCEDISPLAYTYPE_DOMAIN == pNetRes->dwDisplayType)
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{
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pszTemplate = MAKEINTRESOURCE(IDD_WRKGRP_SUMMARYINFO);
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}
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else if (RESOURCEDISPLAYTYPE_SERVER == pNetRes->dwDisplayType)
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{
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pszTemplate = MAKEINTRESOURCE(IDD_SERVER_SUMMARYINFO);
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}
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else if (RESOURCEDISPLAYTYPE_SHARE == pNetRes->dwDisplayType)
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{
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pszTemplate = MAKEINTRESOURCE(IDD_SHARE_SUMMARYINFO);
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}
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else
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{
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appDebugOut((DEB_TRACE, "CNetObj::AddPages. Unknown net resource type!\n"));
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}
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// Create a property sheet page object from a dialog box.
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if (NULL != pszTemplate)
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{
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FillAndAddPage(
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lpfnAddPage,
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lParam,
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CPage::DlgProcPage,
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pszTemplate);
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}
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}
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}
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else
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{
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appDebugOut((DEB_TRACE, "CNetObj::AddPages. NO net resources!\n"));
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// BUGBUG this is really error
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}
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}
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else
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{
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appDebugOut((DEB_TRACE, "CNetObj::AddPages. No SHGetNetResource function!\n"));
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// BUGBUG this is really error
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}
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ReleaseStgMedium(&medium);
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return hr;
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}
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BOOL
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CNetObj::FillAndAddPage(
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LPFNADDPROPSHEETPAGE lpfnAddPage,
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LPARAM lParam,
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DLGPROC pfnDlg,
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LPTSTR pszTemplate
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)
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{
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PROPSHEETPAGE psp;
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HPROPSHEETPAGE hpage;
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psp.dwSize = sizeof(psp); // no extra data.
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psp.dwFlags = PSP_USEREFPARENT;
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psp.hInstance = g_hInstance;
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psp.pszTemplate = pszTemplate;
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psp.hIcon = NULL;
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psp.pszTitle = NULL;
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psp.pfnDlgProc = pfnDlg;
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psp.pfnCallback = NULL;
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psp.pcRefParent = &g_NonOLEDLLRefs;
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// We need to backlink ourselves because we are using member variable
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// of this class.
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psp.lParam = (LPARAM)this;
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this->AddRef();
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hpage = CreatePropertySheetPage(&psp);
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if (NULL != hpage)
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{
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if (!lpfnAddPage(hpage, lParam))
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{
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DestroyPropertySheetPage(hpage);
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}
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}
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return TRUE;
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}
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// Member: CNetObj::ReplacePages
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// Derivation: IShellPropSheetExt
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// Synopsis: (From shlobj.h)
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// "The explorer never calls this member of property sheet
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// extensions. The explorer calls this member of control panel
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// extensions, so that they can replace some of default control
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// panel pages (such as a page of mouse control panel)."
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// Arguments: uPageID -- Specifies the page to be replaced.
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// lpfnReplace -- Specifies the callback function.
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// lParam -- Specifies the opaque handle to be passed to the
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// callback function.
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// History: 4-Apr-95 BruceFo Created
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STDMETHODIMP
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CNetObj::ReplacePage(
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UINT uPageID,
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LPFNADDPROPSHEETPAGE lpfnReplaceWith,
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LPARAM lParam
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)
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{
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CHECK_SIG(CNetObj);
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appAssert(!"CNetObj::ReplacePage called, not implemented");
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return E_NOTIMPL;
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}
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// dummy function to export to get linking to work
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HRESULT PropDummyFunction()
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{
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return S_OK;
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}
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