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 <shlwapi_undoc.h>
  23
  24 DWORD WINAPI _WinList_Init(void);
  25 void WINAPI _ShellDDEInit(BOOL bInit);
  26
  27 HINSTANCE hExplorerInstance;
  28 HMODULE hUser32;
  29 HANDLE hProcessHeap;
  30 HKEY hkExplorer = NULL;
  31 DRAWCAPTEMP DrawCapTemp = NULL;
  32
  33 class CExplorerModule : public CComModule
  34 {
  35 public:
  36 };
  37
  38 BEGIN_OBJECT_MAP(ObjectMap)
  39 END_OBJECT_MAP()
  40
  41 CExplorerModule                             gModule;
  42 CAtlWinModule                               gWinModule;
  43
  44 void *operator new (size_t, void *buf)
  45 {
  46     return buf;
  47 }
  48
  49 static VOID InitializeAtlModule(HINSTANCE hInstance, BOOL bInitialize)
  50 {
  51     if (bInitialize)
  52     {
  53         /* HACK - the global constructors don't run, so I placement new them here */
  54         new (&gModule) CExplorerModule;
  55         new (&gWinModule) CAtlWinModule;
  56         new (&_AtlBaseModule) CAtlBaseModule;
  57         new (&_AtlComModule) CAtlComModule;
  58
  59         gModule.Init(ObjectMap, hInstance, NULL);
  60     }
  61     else
  62     {
  63         gModule.Term();
  64     }
  65 }
  66
  67 #if !WIN7_COMPAT_MODE
  68 static BOOL
  69 SetShellReadyEvent(IN LPCTSTR lpEventName)
  70 {
  71     HANDLE hEvent;
  72
  73     hEvent = OpenEvent(EVENT_MODIFY_STATE, FALSE, lpEventName);
  74     if (hEvent != NULL)
  75     {
  76         SetEvent(hEvent);
  77
  78         CloseHandle(hEvent);
  79         return TRUE;
  80     }
  81
  82     return FALSE;
  83 }
  84
  85 static VOID
  86 HideMinimizedWindows(IN BOOL bHide)
  87 {
  88     MINIMIZEDMETRICS mm;
  89
  90     mm.cbSize = sizeof(mm);
  91     if (!SystemParametersInfo(SPI_GETMINIMIZEDMETRICS, sizeof(mm), &mm, 0))
  92     {
  93         ERR("SystemParametersInfo failed with %lu\n", GetLastError());
  94         return;
  95     }
  96     if (bHide)
  97         mm.iArrange |= ARW_HIDE;
  98     else
  99         mm.iArrange &= ~ARW_HIDE;
 100     if (!SystemParametersInfo(SPI_SETMINIMIZEDMETRICS, sizeof(mm), &mm, 0))
 101         ERR("SystemParametersInfo failed with %lu\n", GetLastError());
 102 }
 103
 104 static INT
 105 StartWithCommandLine(IN HINSTANCE hInstance)
 106 {
 107     BOOL b = FALSE;
 108     EXPLORER_CMDLINE_PARSE_RESULTS parseResults = { 0 };
 109
 110     if (SHExplorerParseCmdLine(&parseResults))
 111         b = SHCreateFromDesktop(&parseResults);
 112
 113     if (parseResults.strPath)
 114         SHFree(parseResults.strPath);
 115
 116     if (parseResults.pidlPath)
 117         ILFree(parseResults.pidlPath);
 118
 119     if (parseResults.pidlRoot)
 120         ILFree(parseResults.pidlRoot);
 121
 122     return b;
 123 }
 124 #endif
 125
 126 static INT
 127 StartWithDesktop(IN HINSTANCE hInstance)
 128 {
 129     InitializeAtlModule(hInstance, TRUE);
 130
 131     if (RegOpenKey(HKEY_CURRENT_USER,
 132         L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer",
 133         &hkExplorer) != ERROR_SUCCESS)
 134     {
 135         WCHAR Message[256];
 136         LoadString(hInstance, IDS_STARTUP_ERROR, Message, 256);
 137         MessageBox(NULL, Message, NULL, MB_ICONERROR);
 138         return 1;
 139     }
 140
 141     hExplorerInstance = hInstance;
 142     hProcessHeap = GetProcessHeap();
 143     LoadAdvancedSettings();
 144
 145     hUser32 = GetModuleHandle(TEXT("USER32.DLL"));
 146     if (hUser32 != NULL)
 147     {
 148         DrawCapTemp = (DRAWCAPTEMP) GetProcAddress(hUser32, PROC_NAME_DRAWCAPTIONTEMP);
 149     }
 150
 151     InitCommonControls();
 152     OleInitialize(NULL);
 153
 154 #if !WIN7_COMPAT_MODE
 155     ProcessStartupItems();
 156
 157     /* Initialize shell dde support */
 158     _ShellDDEInit(TRUE);
 159 #endif
 160
 161     /* Initialize shell icons */
 162     FileIconInit(TRUE);
 163
 164     /* Initialize CLSID_ShellWindows class */
 165     _WinList_Init();
 166
 167     CComPtr<ITrayWindow> Tray;
 168     CreateTrayWindow(&Tray);
 169
 170 #if !WIN7_COMPAT_MODE
 171     /* This not only hides the minimized window captions in the bottom
 172     left screen corner, but is also needed in order to receive
 173     HSHELL_* notification messages (which are required for taskbar
 174     buttons to work right) */
 175     HideMinimizedWindows(TRUE);
 176
 177     HANDLE hShellDesktop = NULL;
 178     if (Tray != NULL)
 179         hShellDesktop = DesktopCreateWindow(Tray);
 180
 181     /* WinXP: Notify msgina to hide the welcome screen */
 182     if (!SetShellReadyEvent(TEXT("msgina: ShellReadyEvent")))
 183         SetShellReadyEvent(TEXT("Global\\msgina: ShellReadyEvent"));
 184 #endif
 185
 186     if (Tray != NULL)
 187     {
 188 #if !WIN7_COMPAT_MODE
 189         RegisterHotKey(NULL, IDHK_RUN, MOD_WIN, 'R');
 190 #endif
 191         TrayMessageLoop(Tray);
 192 #if !WIN7_COMPAT_MODE
 193         HideMinimizedWindows(FALSE);
 194 #endif
 195     }
 196
 197 #if !WIN7_COMPAT_MODE
 198     if (hShellDesktop != NULL)
 199         DesktopDestroyShellWindow(hShellDesktop);
 200 #endif
 201
 202     OleUninitialize();
 203
 204     RegCloseKey(hkExplorer);
 205     hkExplorer = NULL;
 206
 207     InitializeAtlModule(hInstance, FALSE);
 208
 209     return 0;
 210 }
 211
 212 INT WINAPI
 213 _tWinMain(IN HINSTANCE hInstance,
 214           IN HINSTANCE hPrevInstance,
 215           IN LPTSTR lpCmdLine,
 216           IN INT nCmdShow)
 217 {
 218 #if !WIN7_COMPAT_MODE
 219     BOOL CreateShellDesktop = FALSE;
 220
 221     TRACE("Explorer starting... Commandline: %S\n", lpCmdLine);
 222
 223     /*
 224     * Set our shutdown parameters: we want to shutdown the very last,
 225     * but before any TaskMgr instance (which has a shutdown level of 1).
 226     */
 227     SetProcessShutdownParameters(2, 0);
 228
 229     if (GetShellWindow() == NULL)
 230         CreateShellDesktop = TRUE;
 231
 232     if (!CreateShellDesktop)
 233     {
 234         return StartWithCommandLine(hInstance);
 235     }
 236 #endif
 237
 238     return StartWithDesktop(hInstance);
 239 }