109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
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//+----------------------------------------------------------------------------
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//
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// File: shelldll.h
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//
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// Module: CMMON32.EXE and CMDIAL32.DLL
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//
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// Synopsis: Definition of CShellDll, a shell32.dll wrapper.
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//
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// Copyright (c) 1998-1999 Microsoft Corporation
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//
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// Author: fengsun Created 01/12/98
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//
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//+----------------------------------------------------------------------------
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#ifndef SHELLDLL_H
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#define SHELLDLL_H
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#include <windows.h>
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#include <shlobj.h>
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//
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// the following is to circumvent the NT 5.0 windows.h
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//
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#ifdef WIN32_LEAN_AND_MEAN
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#include <shellapi.h>
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#endif
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//+---------------------------------------------------------------------------
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//
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// class CShellDll
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//
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// Description: A class to dynamic load/unload shell32.dll to reduce the
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// workingset under win95
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//
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// History: fengsun Created 1/12/98
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//
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//----------------------------------------------------------------------------
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class CShellDll
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{
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public:
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CShellDll(BOOL fKeepDllLoaded = FALSE);
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~CShellDll();
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BOOL Load(); // can call even if loaded
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void Unload(); // can call even if not loaded
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BOOL IsLoaded();
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// For ShellExecuteEx
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BOOL ExecuteEx(LPSHELLEXECUTEINFO lpExecInfo);
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// For ShellNotifyIcon
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BOOL NotifyIcon(DWORD dwMessage, PNOTIFYICONDATA pnid );
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HRESULT ShellGetSpecialFolderLocation(HWND, int, LPITEMIDLIST *);
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BOOL ShellGetPathFromIDList(LPCITEMIDLIST, LPTSTR);
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HRESULT ShellGetMalloc(LPMALLOC * ppMalloc);
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//
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// These three types and the associated function pointers were made public
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// so that they could be passed to GetUsersApplicationDataDir. Because of
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// name decoration, passing the classes wrappers doesn't work.
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//
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typedef HRESULT (WINAPI* SHGetSpecialFolderLocationSpec)(HWND, int, LPITEMIDLIST *);
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typedef BOOL (WINAPI* SHGetPathFromIDListSpec)(LPCITEMIDLIST, LPTSTR);
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typedef HRESULT (WINAPI* SHGetMallocSpec)(LPMALLOC * ppMalloc);
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SHGetSpecialFolderLocationSpec m_pfnSHGetSpecialFolderLocation;
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SHGetPathFromIDListSpec m_pfnSHGetPathFromIDList;
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SHGetMallocSpec m_pfnSHGetMalloc;
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protected:
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typedef BOOL (WINAPI *SHELLEXECUTEEXPROC)(LPSHELLEXECUTEINFOW lpExecInfo);
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typedef BOOL (WINAPI *SHELL_NOTIFYICONPROC)(DWORD dwMessage, PNOTIFYICONDATAW pnid );
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HINSTANCE m_hInstShell;
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BOOL m_KeepDllLoaded;
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SHELLEXECUTEEXPROC m_fnShellExecuteEx;
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SHELL_NOTIFYICONPROC m_fnShell_NotifyIcon;
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};
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inline BOOL CShellDll::ExecuteEx(LPSHELLEXECUTEINFOW lpExecInfo)
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{
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if (!Load())
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{
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return FALSE;
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}
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return m_fnShellExecuteEx(lpExecInfo);
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}
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inline BOOL CShellDll::NotifyIcon(DWORD dwMessage, PNOTIFYICONDATAW pnid )
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{
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if (!Load())
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{
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return FALSE;
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}
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BOOL fRet = m_fnShell_NotifyIcon(dwMessage,pnid);
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return fRet;
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}
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inline BOOL CShellDll::IsLoaded()
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{
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return m_hInstShell != NULL;
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}
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#endif
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