merge ROS Shell without integrated explorer part into trunk
[reactos.git] / reactos / subsys / system / explorer / explorer.cpp
index ee83c05..435fb23 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright 2003 Martin Fuchs
+ * Copyright 2003, 2004, 2005 Martin Fuchs
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  //
  // Martin Fuchs, 23.07.2003
  //
- // Credits: Thanks to Leon Finker for his explorer window example
+ // Credits: Thanks to Leon Finker for his explorer cabinet window example
  //
 
 
-#include "utility/utility.h"
-
-#include "explorer.h"
-#include "globals.h"
-#include "externals.h"
+#include "precomp.h"
 
 #include "explorer_intres.h"
 
+#include <locale.h>    // for setlocale()
+
+#ifndef __WINE__
+#include <io.h>                // for dup2()
+#include <fcntl.h>     // for _O_RDONLY
+#endif
+
+#include "dialogs/settings.h"  // for MdiSdiDlg
+
+#include "services/shellservices.h"
+
+
+extern "C" int initialize_gdb_stub();  // start up GDB stub
+
+
+DynamicLoadLibFct<void(__stdcall*)(BOOL)> g_SHDOCVW_ShellDDEInit(TEXT("SHDOCVW"), 118);
+
 
 ExplorerGlobals g_Globals;
 
@@ -43,11 +56,437 @@ ExplorerGlobals g_Globals;
 ExplorerGlobals::ExplorerGlobals()
 {
        _hInstance = 0;
-       _hframeClass = 0;
        _cfStrFName = 0;
+
+#ifndef ROSSHELL
+       _hframeClass = 0;
        _hMainWnd = 0;
-       _prescan_nodes = false;
        _desktop_mode = false;
+       _prescan_nodes = false;
+#endif
+
+       _log = NULL;
+#ifndef __MINGW32__    // SHRestricted() missing in MinGW (as of 29.10.2003)
+       _SHRestricted = 0;
+#endif
+       _hwndDesktopBar = 0;
+       _hwndShellView = 0;
+       _hwndDesktop = 0;
+}
+
+
+void ExplorerGlobals::init(HINSTANCE hInstance)
+{
+       _hInstance = hInstance;
+
+#ifndef __MINGW32__    // SHRestricted() missing in MinGW (as of 29.10.2003)
+       _SHRestricted = (DWORD(STDAPICALLTYPE*)(RESTRICTIONS)) GetProcAddress(GetModuleHandle(TEXT("SHELL32")), "SHRestricted");
+#endif
+
+       _icon_cache.init();
+}
+
+
+void ExplorerGlobals::read_persistent()
+{
+        // read configuration file
+       _cfg_dir.printf(TEXT("%s\\ReactOS"), (LPCTSTR)SpecialFolderFSPath(CSIDL_APPDATA,0));
+       _cfg_path.printf(TEXT("%s\\ros-explorer-cfg.xml"), _cfg_dir.c_str());
+
+       if (!_cfg.read(_cfg_path)) {
+               if (_cfg._last_error != XML_ERROR_NO_ELEMENTS)
+                       MessageBox(g_Globals._hwndDesktop, String(_cfg._last_error_msg.c_str()),
+                                               TEXT("ROS Explorer - reading user settings"), MB_OK);
+
+               _cfg.read(TEXT("explorer-cfg-template.xml"));
+       }
+
+        // read bookmarks
+       _favorites_path.printf(TEXT("%s\\ros-explorer-bookmarks.xml"), _cfg_dir.c_str());
+
+       if (!_favorites.read(_favorites_path)) {
+               _favorites.import_IE_favorites(0);
+               _favorites.write(_favorites_path);
+       }
+}
+
+void ExplorerGlobals::write_persistent()
+{
+        // write configuration file
+       RecursiveCreateDirectory(_cfg_dir);
+
+       _cfg.write(_cfg_path);
+       _favorites.write(_favorites_path);
+}
+
+
+XMLPos ExplorerGlobals::get_cfg()
+{
+       XMLPos cfg_pos(&_cfg);
+
+       cfg_pos.smart_create("explorer-cfg");
+
+       return cfg_pos;
+}
+
+XMLPos ExplorerGlobals::get_cfg(const char* path)
+{
+       XMLPos cfg_pos(&_cfg);
+
+       cfg_pos.smart_create("explorer-cfg");
+       cfg_pos.create_relative(path);
+
+       return cfg_pos;
+}
+
+
+void _log_(LPCTSTR txt)
+{
+       FmtString msg(TEXT("%s\n"), txt);
+
+       if (g_Globals._log)
+               _fputts(msg, g_Globals._log);
+
+       OutputDebugString(msg);
+}
+
+
+bool FileTypeManager::is_exe_file(LPCTSTR ext)
+{
+       static const LPCTSTR s_executable_extensions[] = {
+               TEXT("COM"),
+               TEXT("EXE"),
+               TEXT("BAT"),
+               TEXT("CMD"),
+               TEXT("CMM"),
+               TEXT("BTM"),
+               TEXT("AWK"),
+               0
+       };
+
+       TCHAR ext_buffer[_MAX_EXT];
+       const LPCTSTR* p;
+       LPCTSTR s;
+       LPTSTR d;
+
+       for(s=ext+1,d=ext_buffer; (*d=toupper(*s)); s++)
+               ++d;
+
+       for(p=s_executable_extensions; *p; p++)
+               if (!lstrcmp(ext_buffer, *p))
+                       return true;
+
+       return false;
+}
+
+
+const FileTypeInfo& FileTypeManager::operator[](String ext)
+{
+#ifndef __WINE__ ///@todo _tcslwr() for Wine
+       _tcslwr((LPTSTR)ext.c_str());
+#endif
+
+       iterator found = find(ext);
+       if (found != end())
+               return found->second;
+
+       FileTypeInfo& ftype = super::operator[](ext);
+
+       ftype._neverShowExt = false;
+
+       HKEY hkey;
+       TCHAR value[MAX_PATH], display_name[MAX_PATH];
+       LONG valuelen = sizeof(value);
+
+       if (!RegQueryValue(HKEY_CLASSES_ROOT, ext, value, &valuelen)) {
+               ftype._classname = value;
+
+               valuelen = sizeof(display_name);
+               if (!RegQueryValue(HKEY_CLASSES_ROOT, ftype._classname, display_name, &valuelen))
+                       ftype._displayname = display_name;
+
+               if (!RegOpenKey(HKEY_CLASSES_ROOT, ftype._classname, &hkey)) {
+                       if (!RegQueryValueEx(hkey, TEXT("NeverShowExt"), 0, NULL, NULL, NULL))
+                               ftype._neverShowExt = true;
+
+                       RegCloseKey(hkey);
+               }
+       }
+
+       return ftype;
+}
+
+LPCTSTR FileTypeManager::set_type(Entry* entry, bool dont_hide_ext)
+{
+       LPCTSTR ext = _tcsrchr(entry->_data.cFileName, TEXT('.'));
+
+       if (ext) {
+               const FileTypeInfo& type = (*this)[ext];
+
+               if (!type._displayname.empty())
+                       entry->_type_name = _tcsdup(type._displayname);
+
+                // hide some file extensions
+               if (type._neverShowExt && !dont_hide_ext) {
+                       int len = ext - entry->_data.cFileName;
+                       entry->_display_name = (LPTSTR) malloc((len+1)*sizeof(TCHAR));
+                       _tcsncpy(entry->_display_name, entry->_data.cFileName, len);
+                       entry->_display_name[len] = TEXT('\0');
+               }
+
+               if (is_exe_file(ext))
+                       entry->_data.dwFileAttributes |= ATTRIBUTE_EXECUTABLE;
+       }
+
+       return ext;
+}
+
+
+Icon::Icon()
+ :     _id(ICID_UNKNOWN),
+       _itype(IT_STATIC),
+       _hicon(0)
+{
+}
+
+Icon::Icon(ICON_ID id, UINT nid)
+ :     _id(id),
+       _itype(IT_STATIC),
+       _hicon(SmallIcon(nid))
+{
+}
+
+Icon::Icon(ICON_TYPE itype, int id, HICON hIcon)
+ :     _id((ICON_ID)id),
+       _itype(itype),
+       _hicon(hIcon)
+{
+}
+
+Icon::Icon(ICON_TYPE itype, int id, int sys_idx)
+ :     _id((ICON_ID)id),
+       _itype(itype),
+       _sys_idx(sys_idx)
+{
+}
+
+void Icon::draw(HDC hdc, int x, int y, int cx, int cy, COLORREF bk_color, HBRUSH bk_brush) const
+{
+       if (_itype == IT_SYSCACHE)
+               ImageList_DrawEx(g_Globals._icon_cache.get_sys_imagelist(), _sys_idx, hdc, x, y, cx, cy, bk_color, CLR_DEFAULT, ILD_NORMAL);
+       else
+               DrawIconEx(hdc, x, y, _hicon, cx, cy, 0, bk_brush, DI_NORMAL);
+}
+
+HBITMAP        Icon::create_bitmap(COLORREF bk_color, HBRUSH hbrBkgnd, HDC hdc_wnd) const
+{
+       if (_itype == IT_SYSCACHE) {
+               HIMAGELIST himl = g_Globals._icon_cache.get_sys_imagelist();
+
+               int cx, cy;
+               ImageList_GetIconSize(himl, &cx, &cy);
+
+               HBITMAP hbmp = CreateCompatibleBitmap(hdc_wnd, cx, cy);
+               HDC hdc = CreateCompatibleDC(hdc_wnd);
+               HBITMAP hbmp_old = SelectBitmap(hdc, hbmp);
+               ImageList_DrawEx(himl, _sys_idx, hdc, 0, 0, cx, cy, bk_color, CLR_DEFAULT, ILD_NORMAL);
+               SelectBitmap(hdc, hbmp_old);
+               DeleteDC(hdc);
+
+               return hbmp;
+       } else
+               return create_bitmap_from_icon(_hicon, hbrBkgnd, hdc_wnd);
+}
+
+
+int Icon::add_to_imagelist(HIMAGELIST himl, HDC hdc_wnd, COLORREF bk_color, HBRUSH bk_brush) const
+{
+       int ret;
+
+       if (_itype == IT_SYSCACHE) {
+               HIMAGELIST himl = g_Globals._icon_cache.get_sys_imagelist();
+
+               int cx, cy;
+               ImageList_GetIconSize(himl, &cx, &cy);
+
+               HBITMAP hbmp = CreateCompatibleBitmap(hdc_wnd, cx, cy);
+               HDC hdc = CreateCompatibleDC(hdc_wnd);
+               HBITMAP hbmp_old = SelectBitmap(hdc, hbmp);
+               ImageList_DrawEx(himl, _sys_idx, hdc, 0, 0, cx, cy, bk_color, CLR_DEFAULT, ILD_NORMAL);
+               SelectBitmap(hdc, hbmp_old);
+               DeleteDC(hdc);
+
+               ret = ImageList_Add(himl, hbmp, 0);
+
+               DeleteObject(hbmp);
+       } else
+               ret = ImageList_AddAlphaIcon(himl, _hicon, bk_brush, hdc_wnd);
+
+       return ret;
+}
+
+HBITMAP create_bitmap_from_icon(HICON hIcon, HBRUSH hbrush_bkgnd, HDC hdc_wnd)
+{
+       int cx = GetSystemMetrics(SM_CXSMICON);
+       int cy = GetSystemMetrics(SM_CYSMICON);
+       HBITMAP hbmp = CreateCompatibleBitmap(hdc_wnd, cx, cy);
+
+       MemCanvas canvas;
+       BitmapSelection sel(canvas, hbmp);
+
+       RECT rect = {0, 0, cx, cy};
+       FillRect(canvas, &rect, hbrush_bkgnd);
+
+       DrawIconEx(canvas, 0, 0, hIcon, cx, cy, 0, hbrush_bkgnd, DI_NORMAL);
+
+       return hbmp;
+}
+
+int ImageList_AddAlphaIcon(HIMAGELIST himl, HICON hIcon, HBRUSH hbrush_bkgnd, HDC hdc_wnd)
+{
+       HBITMAP hbmp = create_bitmap_from_icon(hIcon, hbrush_bkgnd, hdc_wnd);
+
+       int ret = ImageList_Add(himl, hbmp, 0);
+
+       DeleteObject(hbmp);
+
+       return ret;
+}
+
+
+int IconCache::s_next_id = ICID_DYNAMIC;
+
+
+void IconCache::init()
+{
+       _icons[ICID_NONE]               = Icon(IT_STATIC, ICID_NONE, (HICON)0);
+
+       _icons[ICID_FOLDER]             = Icon(ICID_FOLDER,             IDI_FOLDER);
+       //_icons[ICID_DOCUMENT] = Icon(ICID_DOCUMENT,   IDI_DOCUMENT);
+       _icons[ICID_EXPLORER]   = Icon(ICID_EXPLORER,   IDI_EXPLORER);
+       _icons[ICID_APP]                = Icon(ICID_APP,                IDI_APPICON);
+
+       _icons[ICID_CONFIG]             = Icon(ICID_CONFIG,             IDI_CONFIG);
+       _icons[ICID_DOCUMENTS]  = Icon(ICID_DOCUMENTS,  IDI_DOCUMENTS);
+       _icons[ICID_FAVORITES]  = Icon(ICID_FAVORITES,  IDI_FAVORITES);
+       _icons[ICID_INFO]               = Icon(ICID_INFO,               IDI_INFO);
+       _icons[ICID_APPS]               = Icon(ICID_APPS,               IDI_APPS);
+       _icons[ICID_SEARCH]             = Icon(ICID_SEARCH,             IDI_SEARCH);
+       _icons[ICID_ACTION]             = Icon(ICID_ACTION,             IDI_ACTION);
+       _icons[ICID_SEARCH_DOC] = Icon(ICID_SEARCH_DOC, IDI_SEARCH_DOC);
+       _icons[ICID_PRINTER]    = Icon(ICID_PRINTER,    IDI_PRINTER);
+       _icons[ICID_NETWORK]    = Icon(ICID_NETWORK,    IDI_NETWORK);
+       _icons[ICID_COMPUTER]   = Icon(ICID_COMPUTER,   IDI_COMPUTER);
+       _icons[ICID_LOGOFF]             = Icon(ICID_LOGOFF,             IDI_LOGOFF);
+       _icons[ICID_BOOKMARK]   = Icon(ICID_BOOKMARK,   IDI_DOT_TRANS);
+}
+
+
+const Icon& IconCache::extract(const String& path)
+{
+       PathMap::iterator found = _pathMap.find(path);
+
+       if (found != _pathMap.end())
+               return _icons[found->second];
+
+       SHFILEINFO sfi;
+
+#if 1  // use system image list - the "search program dialog" needs it
+       HIMAGELIST himlSys = (HIMAGELIST) SHGetFileInfo(path, 0, &sfi, sizeof(sfi), SHGFI_SYSICONINDEX|SHGFI_SMALLICON);
+
+       if (himlSys) {
+               _himlSys = himlSys;
+
+               const Icon& icon = add(sfi.iIcon/*, IT_SYSCACHE*/);
+#else
+       if (SHGetFileInfo(path, 0, &sfi, sizeof(sfi), SHGFI_ICON|SHGFI_SMALLICON)) {
+               const Icon& icon = add(sfi.hIcon, IT_CACHED);
+#endif
+
+               ///@todo limit cache size
+               _pathMap[path] = icon;
+
+               return icon;
+       } else
+               return _icons[ICID_NONE];
+}
+
+const Icon& IconCache::extract(LPCTSTR path, int idx)
+{
+       CachePair key(path, idx);
+
+#ifndef __WINE__ ///@todo _tcslwr() for Wine
+       _tcslwr((LPTSTR)key.first.c_str());
+#endif
+
+       PathIdxMap::iterator found = _pathIdxMap.find(key);
+
+       if (found != _pathIdxMap.end())
+               return _icons[found->second];
+
+       HICON hIcon;
+
+       if ((int)ExtractIconEx(path, idx, NULL, &hIcon, 1) > 0) {
+               const Icon& icon = add(hIcon, IT_CACHED);
+
+               _pathIdxMap[key] = icon;
+
+               return icon;
+       } else {
+
+               ///@todo retreive "http://.../favicon.ico" format icons
+
+               return _icons[ICID_NONE];
+       }
+}
+
+const Icon& IconCache::extract(IExtractIcon* pExtract, LPCTSTR path, int idx)
+{
+       HICON hIconLarge = 0;
+       HICON hIcon;
+
+       HRESULT hr = pExtract->Extract(path, idx, &hIconLarge, &hIcon, MAKELONG(0/*GetSystemMetrics(SM_CXICON)*/,GetSystemMetrics(SM_CXSMICON)));
+
+       if (hr == NOERROR) {    //@@ oder SUCCEEDED(hr) ?
+               if (hIconLarge)
+                       DestroyIcon(hIconLarge);
+
+               if (hIcon)
+                       return add(hIcon);
+       }
+
+       return _icons[ICID_NONE];
+}
+
+const Icon& IconCache::add(HICON hIcon, ICON_TYPE type)
+{
+       int id = ++s_next_id;
+
+       return _icons[id] = Icon(type, id, hIcon);
+}
+
+const Icon&    IconCache::add(int sys_idx/*, ICON_TYPE type=IT_SYSCACHE*/)
+{
+       int id = ++s_next_id;
+
+       return _icons[id] = SysCacheIcon(id, sys_idx);
+}
+
+const Icon& IconCache::get_icon(int id)
+{
+       return _icons[id];
+}
+
+void IconCache::free_icon(int icon_id)
+{
+       IconMap::iterator found = _icons.find(icon_id);
+
+       if (found != _icons.end()) {
+               Icon& icon = found->second;
+
+               if (icon.destroy())
+                       _icons.erase(found);
+       }
 }
 
 
@@ -57,7 +496,7 @@ ResString::ResString(UINT nid)
 
        int len = LoadString(g_Globals._hInstance, nid, buffer, sizeof(buffer)/sizeof(TCHAR));
 
-       assign(buffer, len);
+       super::assign(buffer, len);
 }
 
 
@@ -71,115 +510,448 @@ SmallIcon::SmallIcon(UINT nid)
        _hicon = (HICON)LoadImage(g_Globals._hInstance, MAKEINTRESOURCE(nid), IMAGE_ICON, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_SHARED);
 }
 
+ResIconEx::ResIconEx(UINT nid, int w, int h)
+{
+       _hicon = (HICON)LoadImage(g_Globals._hInstance, MAKEINTRESOURCE(nid), IMAGE_ICON, w, h, LR_SHARED);
+}
+
 
-void explorer_show_frame(HWND hwndDesktop, int cmdshow)
+void SetWindowIcon(HWND hwnd, UINT nid)
 {
-       if (g_Globals._hMainWnd)
+       HICON hIcon = ResIcon(nid);
+       Window_SetIcon(hwnd, ICON_BIG, hIcon);
+
+       HICON hIconSmall = SmallIcon(nid);
+       Window_SetIcon(hwnd, ICON_SMALL, hIconSmall);
+}
+
+
+ResBitmap::ResBitmap(UINT nid)
+{
+       _hBmp = LoadBitmap(g_Globals._hInstance, MAKEINTRESOURCE(nid));
+}
+
+
+#ifndef ROSSHELL
+
+void explorer_show_frame(int cmdshow, LPTSTR lpCmdLine)
+{
+       if (g_Globals._hMainWnd) {
+               if (IsIconic(g_Globals._hMainWnd))
+                       ShowWindow(g_Globals._hMainWnd, SW_RESTORE);
+               else
+                       SetForegroundWindow(g_Globals._hMainWnd);
+
                return;
+       }
 
        g_Globals._prescan_nodes = false;
 
+       XMLPos explorer_options = g_Globals.get_cfg("general/explorer");
+       XS_String mdiStr = XMLString(explorer_options, "mdi");
+
+       if (mdiStr.empty())
+               Dialog::DoModal(IDD_MDI_SDI, WINDOW_CREATOR(MdiSdiDlg), g_Globals._hwndDesktop);
+
+       bool mdi = XMLBool(explorer_options, "mdi", true);
+
         // create main window
-       g_Globals._hMainWnd = MainFrame::Create();
+       MainFrameBase::Create(lpCmdLine, mdi, cmdshow);
+}
+
+#else
+
+void explorer_show_frame(int cmdshow, LPTSTR lpCmdLine)
+{
+       if (!lpCmdLine)
+               lpCmdLine = TEXT("explorer.exe");
 
-       ShowWindow(g_Globals._hMainWnd, cmdshow);
+       launch_file(GetDesktopWindow(), lpCmdLine, cmdshow);
+}
 
-       UpdateWindow(g_Globals._hMainWnd);
+#endif
 
-        // Open the first child window after initialiszing the whole application
-       PostMessage(g_Globals._hMainWnd, WM_OPEN_WINDOW, 0, 0);
+
+PopupMenu::PopupMenu(UINT nid)
+{
+       HMENU hMenu = LoadMenu(g_Globals._hInstance, MAKEINTRESOURCE(nid));
+       _hmenu = GetSubMenu(hMenu, 0);
+}
+
+
+ /// "About Explorer" Dialog
+struct ExplorerAboutDlg : public
+                       CtlColorParent<
+                               OwnerDrawParent<Dialog>
+                       >
+{
+       typedef CtlColorParent<
+                               OwnerDrawParent<Dialog>
+                       > super;
+
+       ExplorerAboutDlg(HWND hwnd)
+        :      super(hwnd)
+       {
+               SetWindowIcon(hwnd, IDI_REACTOS);
+
+               new FlatButton(hwnd, IDOK);
+
+               _hfont = CreateFont(20, 0, 0, 0, FW_BOLD, TRUE, 0, 0, 0, 0, 0, 0, 0, TEXT("Sans Serif"));
+               new ColorStatic(hwnd, IDC_ROS_EXPLORER, RGB(32,32,128), 0, _hfont);
+
+               new HyperlinkCtrl(hwnd, IDC_WWW);
+
+               FmtString ver_txt(ResString(IDS_EXPLORER_VERSION_STR), (LPCTSTR)ResString(IDS_VERSION_STR));
+               SetWindowText(GetDlgItem(hwnd, IDC_VERSION_TXT), ver_txt);
+
+               HWND hwnd_winver = GetDlgItem(hwnd, IDC_WIN_VERSION);
+               SetWindowText(hwnd_winver, get_windows_version_str());
+               SetWindowFont(hwnd_winver, GetStockFont(DEFAULT_GUI_FONT), FALSE);
+
+               CenterWindow(hwnd);
+       }
+
+       ~ExplorerAboutDlg()
+       {
+               DeleteObject(_hfont);
+       }
+
+       LRESULT WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
+       {
+               switch(nmsg) {
+                 case WM_PAINT:
+                       Paint();
+                       break;
+
+                 default:
+                       return super::WndProc(nmsg, wparam, lparam);
+               }
+
+               return 0;
+       }
+
+       void Paint()
+       {
+               PaintCanvas canvas(_hwnd);
+
+               HICON hicon = (HICON) LoadImage(g_Globals._hInstance, MAKEINTRESOURCE(IDI_REACTOS_BIG), IMAGE_ICON, 0, 0, LR_SHARED);
+
+               DrawIconEx(canvas, 20, 10, hicon, 0, 0, 0, 0, DI_NORMAL);
+       }
+
+protected:
+       HFONT   _hfont;
+};
+
+void explorer_about(HWND hwndParent)
+{
+       Dialog::DoModal(IDD_ABOUT_EXPLORER, WINDOW_CREATOR(ExplorerAboutDlg), hwndParent);
 }
 
 
 static void InitInstance(HINSTANCE hInstance)
 {
+       CONTEXT("InitInstance");
+
        setlocale(LC_COLLATE, "");      // set collating rules to local settings for compareName
 
+#ifndef ROSSHELL
         // register frame window class
        g_Globals._hframeClass = IconWindowClass(CLASSNAME_FRAME,IDI_EXPLORER);
 
-        // register child windows class
+        // register child window class
        WindowClass(CLASSNAME_CHILDWND, CS_CLASSDC|CS_DBLCLKS|CS_VREDRAW).Register();
 
-        // register tree windows class
+        // register tree window class
        WindowClass(CLASSNAME_WINEFILETREE, CS_CLASSDC|CS_DBLCLKS|CS_VREDRAW).Register();
+#endif
 
        g_Globals._cfStrFName = RegisterClipboardFormat(CFSTR_FILENAME);
 }
 
 
-int explorer_main(HINSTANCE hInstance, HWND hwndDesktop, int cmdshow)
+int explorer_main(HINSTANCE hInstance, LPTSTR lpCmdLine, int cmdshow)
 {
-        // initialize COM and OLE
-       OleInit usingCOM;
+       CONTEXT("explorer_main");
 
         // initialize Common Controls library
-       CommonControlInit usingCmnCtrl(ICC_LISTVIEW_CLASSES|ICC_TREEVIEW_CLASSES|ICC_BAR_CLASSES);
+       CommonControlInit usingCmnCtrl;
 
        try {
                InitInstance(hInstance);
        } catch(COMException& e) {
-               HandleException(e, g_Globals._hMainWnd);
+               HandleException(e, GetDesktopWindow());
                return -1;
        }
 
-       if (hwndDesktop)
-               g_Globals._desktop_mode = true;
-
+#ifndef ROSSHELL
        if (cmdshow != SW_HIDE) {
-#ifndef _ROS_  // don't maximize if being called from the ROS desktop
+/*     // don't maximize if being called from the ROS desktop
                if (cmdshow == SW_SHOWNORMAL)
-                               /*TODO: read window placement from registry */
+                               ///@todo read window placement from registry
                        cmdshow = SW_MAXIMIZE;
-#endif
+*/
 
-               explorer_show_frame(hwndDesktop, cmdshow);
+               explorer_show_frame(cmdshow, lpCmdLine);
        }
+#endif
 
        return Window::MessageLoop();
 }
 
 
+ // MinGW does not provide a Unicode startup routine, so we have to implement an own.
+#if defined(__MINGW32__) && defined(UNICODE)
+
+#define _tWinMain wWinMain
+int WINAPI wWinMain(HINSTANCE, HINSTANCE, LPWSTR, int);
+
+int main(int argc, char* argv[])
+{
+       CONTEXT("main");
+
+       STARTUPINFO startupinfo;
+       int nShowCmd = SW_SHOWNORMAL;
+
+       GetStartupInfo(&startupinfo);
+
+       if (startupinfo.dwFlags & STARTF_USESHOWWINDOW)
+               nShowCmd = startupinfo.wShowWindow;
+
+       LPWSTR cmdline = GetCommandLineW();
+
+       while(*cmdline && !_istspace(*cmdline))
+               ++cmdline;
+
+       while(_istspace(*cmdline))
+               ++cmdline;
+
+       return wWinMain(GetModuleHandle(NULL), 0, cmdline, nShowCmd);
+}
+
+#endif // __MINGW && UNICODE
+
+
+static bool SetShellReadyEvent(LPCTSTR evtName)
+{
+       HANDLE hEvent = OpenEvent(EVENT_MODIFY_STATE, FALSE, evtName);
+       if (!hEvent)
+               return false;
+
+       SetEvent(hEvent);
+       CloseHandle(hEvent);
+
+       return true;
+}
+
+
 int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nShowCmd)
 {
-        // create desktop window and task bar only, if there is no other shell and we are
-        // the first explorer instance
-       BOOL startup_desktop = !IsAnyDesktopRunning();
+       CONTEXT("WinMain()");
+
+       BOOL any_desktop_running = IsAnyDesktopRunning();
+
+       BOOL startup_desktop;
+
+        // command line option "-install" to replace previous shell application with ROS Explorer
+       if (_tcsstr(lpCmdLine,TEXT("-install"))) {
+                // install ROS Explorer into the registry
+               TCHAR path[MAX_PATH];
+
+               int l = GetModuleFileName(0, path, MAX_PATH);
+               if (l) {
+                       HKEY hkey;
+
+                       if (!RegOpenKey(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon"), &hkey)) {
+
+                               ///@todo save previous shell application in config file
+
+                               RegSetValueEx(hkey, TEXT("Shell"), 0, REG_SZ, (LPBYTE)path, l*sizeof(TCHAR));
+                               RegCloseKey(hkey);
+                       }
+
+                       if (!RegOpenKey(HKEY_CURRENT_USER, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon"), &hkey)) {
+
+                               ///@todo save previous shell application in config file
+
+                               RegSetValueEx(hkey, TEXT("Shell"), 0, REG_SZ, (LPBYTE)TEXT(""), l*sizeof(TCHAR));
+                               RegCloseKey(hkey);
+                       }
+               }
+
+               HWND shellWindow = GetShellWindow();
+
+               if (shellWindow) {
+                       DWORD pid;
+
+                        // terminate shell process for NT like systems
+                       GetWindowThreadProcessId(shellWindow, &pid);
+                       HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
+
+                        // On Win 9x it's sufficient to destroy the shell window.
+                       DestroyWindow(shellWindow);
+
+                       if (TerminateProcess(hProcess, 0))
+                               WaitForSingleObject(hProcess, INFINITE);
+
+                       CloseHandle(hProcess);
+               }
+
+               startup_desktop = TRUE;
+       } else {
+                // create desktop window and task bar only, if there is no other shell and we are
+                // the first explorer instance
+                // MS Explorer looks additionally into the registry entry HKCU\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell,
+                // to decide wether it is currently configured as shell application.
+               startup_desktop = !any_desktop_running;
+       }
+
+
+       bool autostart = !any_desktop_running;
+
+        // disable autostart if the SHIFT key is pressed
+       if (GetAsyncKeyState(VK_SHIFT) < 0)
+               autostart = false;
+
+#ifdef _DEBUG  //MF: disabled for debugging
+       autostart = false;
+#endif
 
         // If there is given the command line option "-desktop", create desktop window anyways
-       if (!lstrcmp(lpCmdLine,TEXT("-desktop")))
+       if (_tcsstr(lpCmdLine,TEXT("-desktop")))
                startup_desktop = TRUE;
+#ifndef ROSSHELL
+       else if (_tcsstr(lpCmdLine,TEXT("-nodesktop")))
+               startup_desktop = FALSE;
 
-       if (!lstrcmp(lpCmdLine,TEXT("-noexplorer"))) {
+        // Don't display cabinet window in desktop mode
+       if (startup_desktop && !_tcsstr(lpCmdLine,TEXT("-explorer")))
                nShowCmd = SW_HIDE;
-               startup_desktop = TRUE;
+#endif
+
+       if (_tcsstr(lpCmdLine,TEXT("-noautostart")))
+               autostart = false;
+       else if (_tcsstr(lpCmdLine,TEXT("-autostart")))
+               autostart = true;
+
+#ifndef __WINE__
+       if (_tcsstr(lpCmdLine,TEXT("-console"))) {
+               AllocConsole();
+
+               _dup2(_open_osfhandle((long)GetStdHandle(STD_INPUT_HANDLE), _O_RDONLY), 0);
+               _dup2(_open_osfhandle((long)GetStdHandle(STD_OUTPUT_HANDLE), 0), 1);
+               _dup2(_open_osfhandle((long)GetStdHandle(STD_ERROR_HANDLE), 0), 2);
+
+               g_Globals._log = fdopen(1, "w");
+               setvbuf(g_Globals._log, 0, _IONBF, 0);
+
+               LOG(TEXT("starting explorer debug log\n"));
        }
+#endif
 
-       g_Globals._hInstance = hInstance;
 
-       HWND hwndDesktop = 0;
+       if (startup_desktop) {
+                // hide the XP login screen (Credit to Nicolas Escuder)
+                // another undocumented event: "Global\\msgina: ReturnToWelcome"
+               if (!SetShellReadyEvent(TEXT("msgina: ShellReadyEvent")))
+                       SetShellReadyEvent(TEXT("Global\\msgina: ShellReadyEvent"));
+       }
+#ifdef ROSSHELL
+       else
+               return 0;       // no shell to launch, so exit immediatelly
+#endif
 
-       if (startup_desktop)
-       {
-               hwndDesktop = create_desktop_window();
 
-                // Initialize the explorer bar
-               HWND hwndExplorerBar = InitializeExplorerBar(hInstance);
+       if (!any_desktop_running) {
+                // launch the shell DDE server
+               if (g_SHDOCVW_ShellDDEInit)
+                       (*g_SHDOCVW_ShellDDEInit)(TRUE);
+       }
 
-                // Load plugins
-//             LoadAvailablePlugIns(hwndExplorerBar);
 
-#ifndef _DEBUG //MF: disabled for debugging
-               {
-               char* argv[] = {""};
-               startup(1, argv);
-               }
+       bool use_gdb_stub = false;      // !IsDebuggerPresent();
+
+       if (_tcsstr(lpCmdLine,TEXT("-debug")))
+               use_gdb_stub = true;
+
+       if (_tcsstr(lpCmdLine,TEXT("-break"))) {
+               LOG(TEXT("debugger breakpoint"));
+#ifdef _MSC_VER
+               __asm int 3
+#else
+               asm("int3");
+#endif
+       }
+
+        // activate GDB remote debugging stub if no other debugger is running
+       if (use_gdb_stub) {
+               LOG(TEXT("waiting for debugger connection...\n"));
+
+               initialize_gdb_stub();
+       }
+
+       g_Globals.init(hInstance);
+
+        // initialize COM and OLE before creating the desktop window
+       OleInit usingCOM;
+
+        // init common controls library
+       CommonControlInit usingCmnCtrl;
+
+       g_Globals.read_persistent();
+
+       if (startup_desktop) {
+               WaitCursor wait;
+
+               g_Globals._desktops.init();
+
+               g_Globals._hwndDesktop = DesktopWindow::Create();
+#ifdef _USE_HDESK
+               g_Globals._desktops.get_current_Desktop()->_hwndDesktop = g_Globals._hwndDesktop;
 #endif
        }
 
-       int ret = explorer_main(hInstance, hwndDesktop, nShowCmd);
+       Thread* pSSOThread = NULL;
 
-//     ReleaseAvailablePlugIns();
+       if (startup_desktop) {
+                // launch SSO thread to allow message processing independent from the explorer main thread
+               pSSOThread = new SSOThread;
+               pSSOThread->Start();
+       }
+
+       /**TODO launching autostart programs can be moved into a background thread. */
+       if (autostart) {
+               char* argv[] = {"", "s"};       // call startup routine in SESSION_START mode
+               startup(2, argv);
+       }
+
+#ifndef ROSSHELL
+       if (g_Globals._hwndDesktop)
+               g_Globals._desktop_mode = true;
+
+       /**TODO fix command line handling */
+       if (*lpCmdLine=='"' && lpCmdLine[_tcslen(lpCmdLine)-1]=='"') {
+               ++lpCmdLine;
+               lpCmdLine[_tcslen(lpCmdLine)-1] = '\0';
+       }
+#endif
+
+
+       int ret = explorer_main(hInstance, lpCmdLine, nShowCmd);
+
+        // write configuration file
+       g_Globals.write_persistent();
+
+       if (pSSOThread) {
+               pSSOThread->Stop();
+               delete pSSOThread;
+       }
+
+       if (!any_desktop_running) {
+                // shutdown the shell DDE server
+               if (g_SHDOCVW_ShellDDEInit)
+                       (*g_SHDOCVW_ShellDDEInit)(FALSE);
+       }
 
        return ret;
 }