reactos/base/shell/explorer/explorer.cpp

   1 /*
   2  * ReactOS Explorer
   3  *
   4  * Copyright 2006 - 2007 Thomas Weidenmueller <w3seek@reactos.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include "precomp.h"
  22 #include <browseui_undoc.h>
  23
  24 HINSTANCE hExplorerInstance;
  25 HANDLE hProcessHeap;
  26 HKEY hkExplorer = NULL;
  27
  28 class CExplorerModule : public CComModule
  29 {
  30 public:
  31 };
  32
  33 BEGIN_OBJECT_MAP(ObjectMap)
  34 END_OBJECT_MAP()
  35
  36 CExplorerModule                             gModule;
  37 CAtlWinModule                               gWinModule;
  38
  39 void *operator new (size_t, void *buf)
  40 {
  41     return buf;
  42 }
  43
  44 static VOID InitializeAtlModule(HINSTANCE hInstance, BOOL bInitialize)
  45 {
  46     if (bInitialize)
  47     {
  48         gModule.Init(ObjectMap, hInstance, NULL);
  49     }
  50     else
  51     {
  52         gModule.Term();
  53     }
  54 }
  55
  56 #if !WIN7_DEBUG_MODE
  57 static BOOL
  58 SetShellReadyEvent(IN LPCWSTR lpEventName)
  59 {
  60     HANDLE hEvent;
  61
  62     hEvent = OpenEventW(EVENT_MODIFY_STATE, FALSE, lpEventName);
  63     if (hEvent != NULL)
  64     {
  65         SetEvent(hEvent);
  66
  67         CloseHandle(hEvent);
  68         return TRUE;
  69     }
  70
  71     return FALSE;
  72 }
  73
  74 static VOID
  75 HideMinimizedWindows(IN BOOL bHide)
  76 {
  77     MINIMIZEDMETRICS mm;
  78
  79     mm.cbSize = sizeof(mm);
  80     if (!SystemParametersInfoW(SPI_GETMINIMIZEDMETRICS, sizeof(mm), &mm, 0))
  81     {
  82         ERR("SystemParametersInfoW failed with %lu\n", GetLastError());
  83         return;
  84     }
  85     if (bHide)
  86         mm.iArrange |= ARW_HIDE;
  87     else
  88         mm.iArrange &= ~ARW_HIDE;
  89     if (!SystemParametersInfoW(SPI_SETMINIMIZEDMETRICS, sizeof(mm), &mm, 0))
  90         ERR("SystemParametersInfoW failed with %lu\n", GetLastError());
  91 }
  92 #endif
  93
  94 #if !WIN7_COMPAT_MODE
  95 static INT
  96 StartWithCommandLine(IN HINSTANCE hInstance)
  97 {
  98     BOOL b = FALSE;
  99     EXPLORER_CMDLINE_PARSE_RESULTS parseResults = { 0 };
 100
 101     if (SHExplorerParseCmdLine(&parseResults))
 102         b = SHCreateFromDesktop(&parseResults);
 103
 104     if (parseResults.strPath)
 105         SHFree(parseResults.strPath);
 106
 107     if (parseResults.pidlPath)
 108         ILFree(parseResults.pidlPath);
 109
 110     if (parseResults.pidlRoot)
 111         ILFree(parseResults.pidlRoot);
 112
 113     return b;
 114 }
 115 #endif
 116
 117 static INT
 118 StartWithDesktop(IN HINSTANCE hInstance)
 119 {
 120     InitializeAtlModule(hInstance, TRUE);
 121
 122     if (RegOpenKeyW(HKEY_CURRENT_USER,
 123         L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer",
 124         &hkExplorer) != ERROR_SUCCESS)
 125     {
 126         WCHAR Message[256];
 127         LoadStringW(hInstance, IDS_STARTUP_ERROR, Message, _countof(Message));
 128         MessageBox(NULL, Message, NULL, MB_ICONERROR);
 129         return 1;
 130     }
 131
 132     hExplorerInstance = hInstance;
 133     hProcessHeap = GetProcessHeap();
 134
 135     LoadTaskBarSettings();
 136     InitCommonControls();
 137     OleInitialize(NULL);
 138
 139 #if !WIN7_DEBUG_MODE
 140     ProcessStartupItems();
 141 #endif
 142
 143 #if !WIN7_COMPAT_MODE
 144     /* Initialize shell dde support */
 145     _ShellDDEInit(TRUE);
 146 #endif
 147
 148     /* Initialize shell icons */
 149     FileIconInit(TRUE);
 150
 151     /* Initialize CLSID_ShellWindows class */
 152     _WinList_Init();
 153
 154     CComPtr<ITrayWindow> Tray;
 155     CreateTrayWindow(&Tray);
 156
 157 #if !WIN7_DEBUG_MODE
 158     /* This not only hides the minimized window captions in the bottom
 159     left screen corner, but is also needed in order to receive
 160     HSHELL_* notification messages (which are required for taskbar
 161     buttons to work right) */
 162     HideMinimizedWindows(TRUE);
 163
 164     HANDLE hShellDesktop = NULL;
 165     if (Tray != NULL)
 166         hShellDesktop = DesktopCreateWindow(Tray);
 167
 168     /* WinXP: Notify msgina to hide the welcome screen */
 169     if (!SetShellReadyEvent(L"msgina: ShellReadyEvent"))
 170         SetShellReadyEvent(L"Global\\msgina: ShellReadyEvent");
 171 #endif
 172
 173     if (Tray != NULL)
 174     {
 175         TrayMessageLoop(Tray);
 176 #if !WIN7_DEBUG_MODE
 177         HideMinimizedWindows(FALSE);
 178 #endif
 179     }
 180
 181 #if !WIN7_DEBUG_MODE
 182     if (hShellDesktop != NULL)
 183         DesktopDestroyShellWindow(hShellDesktop);
 184 #endif
 185
 186     OleUninitialize();
 187
 188     RegCloseKey(hkExplorer);
 189     hkExplorer = NULL;
 190
 191     InitializeAtlModule(hInstance, FALSE);
 192
 193     return 0;
 194 }
 195
 196 INT WINAPI
 197 _tWinMain(IN HINSTANCE hInstance,
 198           IN HINSTANCE hPrevInstance,
 199           IN LPTSTR lpCmdLine,
 200           IN INT nCmdShow)
 201 {
 202     /*
 203     * Set our shutdown parameters: we want to shutdown the very last,
 204     * but before any TaskMgr instance (which has a shutdown level of 1).
 205     */
 206     SetProcessShutdownParameters(2, 0);
 207
 208     InitRSHELL();
 209
 210 #if !WIN7_COMPAT_MODE
 211     BOOL CreateShellDesktop = FALSE;
 212
 213     TRACE("Explorer starting... Commandline: %S\n", lpCmdLine);
 214
 215     if (GetShellWindow() == NULL)
 216         CreateShellDesktop = TRUE;
 217
 218     if (!CreateShellDesktop)
 219     {
 220         return StartWithCommandLine(hInstance);
 221     }
 222 #endif
 223
 224     return StartWithDesktop(hInstance);
 225 }