reactos/base/shell/explorer-new/explorer.c

   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
  23 HINSTANCE hExplorerInstance;
  24 HMODULE hUser32;
  25 HANDLE hProcessHeap;
  26 HKEY hkExplorer = NULL;
  27 DRAWCAPTEMP DrawCapTemp = NULL;
  28
  29 /* undoc GUID */
  30 DEFINE_GUID(CLSID_RebarBandSite, 0xECD4FC4D, 0x521C, 0x11D0, 0xB7, 0x92, 0x00, 0xA0, 0xC9, 0x03, 0x12, 0xE1);
  31
  32 LONG
  33 SetWindowStyle(IN HWND hWnd,
  34                IN LONG dwStyleMask,
  35                IN LONG dwStyle)
  36 {
  37     LONG PrevStyle, Style;
  38
  39     ASSERT((~dwStyleMask & dwStyle) == 0);
  40
  41     PrevStyle = GetWindowLongPtr(hWnd,
  42                                  GWL_STYLE);
  43     if (PrevStyle != 0 &&
  44         (PrevStyle & dwStyleMask) != dwStyle)
  45     {
  46         Style = PrevStyle & ~dwStyleMask;
  47         Style |= dwStyle;
  48
  49         PrevStyle = SetWindowLongPtr(hWnd,
  50                                      GWL_STYLE,
  51                                      Style);
  52     }
  53
  54     return PrevStyle;
  55 }
  56
  57 LONG
  58 SetWindowExStyle(IN HWND hWnd,
  59                  IN LONG dwStyleMask,
  60                  IN LONG dwStyle)
  61 {
  62     LONG PrevStyle, Style;
  63
  64     ASSERT((~dwStyleMask & dwStyle) == 0);
  65
  66     PrevStyle = GetWindowLongPtr(hWnd,
  67                                  GWL_EXSTYLE);
  68     if (PrevStyle != 0 &&
  69         (PrevStyle & dwStyleMask) != dwStyle)
  70     {
  71         Style = PrevStyle & ~dwStyleMask;
  72         Style |= dwStyle;
  73
  74         PrevStyle = SetWindowLongPtr(hWnd,
  75                                      GWL_EXSTYLE,
  76                                      Style);
  77     }
  78
  79     return PrevStyle;
  80 }
  81
  82 HMENU
  83 LoadPopupMenu(IN HINSTANCE hInstance,
  84               IN LPCTSTR lpMenuName)
  85 {
  86     HMENU hMenu, hSubMenu = NULL;
  87
  88     hMenu = LoadMenu(hInstance,
  89                      lpMenuName);
  90
  91     if (hMenu != NULL)
  92     {
  93         hSubMenu = GetSubMenu(hMenu,
  94                               0);
  95         if (hSubMenu != NULL &&
  96             !RemoveMenu(hMenu,
  97                         0,
  98                         MF_BYPOSITION))
  99         {
 100             hSubMenu = NULL;
 101         }
 102
 103         DestroyMenu(hMenu);
 104     }
 105
 106     return hSubMenu;
 107 }
 108
 109 HMENU
 110 FindSubMenu(IN HMENU hMenu,
 111             IN UINT uItem,
 112             IN BOOL fByPosition)
 113 {
 114     MENUITEMINFO mii;
 115
 116     mii.cbSize = sizeof(mii);
 117     mii.fMask = MIIM_SUBMENU;
 118
 119     if (GetMenuItemInfo(hMenu,
 120                         uItem,
 121                         fByPosition,
 122                         &mii))
 123     {
 124         return mii.hSubMenu;
 125     }
 126
 127     return NULL;
 128 }
 129
 130 BOOL
 131 GetCurrentLoggedOnUserName(OUT LPTSTR szBuffer,
 132                            IN DWORD dwBufferSize)
 133 {
 134     DWORD dwType;
 135     DWORD dwSize;
 136
 137     /* Query the user name from the registry */
 138     dwSize = (dwBufferSize * sizeof(TCHAR)) - 1;
 139     if (RegQueryValueEx(hkExplorer,
 140                         TEXT("Logon User Name"),
 141                         0,
 142                         &dwType,
 143                         (LPBYTE)szBuffer,
 144                         &dwSize) == ERROR_SUCCESS &&
 145         (dwSize / sizeof(TCHAR)) > 1 &&
 146         szBuffer[0] != _T('\0'))
 147     {
 148         szBuffer[dwSize / sizeof(TCHAR)] = _T('\0');
 149         return TRUE;
 150     }
 151
 152     /* Fall back to GetUserName() */
 153     dwSize = dwBufferSize;
 154     if (!GetUserName(szBuffer,
 155                      &dwSize))
 156     {
 157         szBuffer[0] = _T('\0');
 158         return FALSE;
 159     }
 160
 161     return TRUE;
 162 }
 163
 164 BOOL
 165 FormatMenuString(IN HMENU hMenu,
 166                  IN UINT uPosition,
 167                  IN UINT uFlags,
 168                  ...)
 169 {
 170     va_list vl;
 171     MENUITEMINFO mii;
 172     TCHAR szBuf[128];
 173     TCHAR szBufFmt[128];
 174
 175     /* Find the menu item and read the formatting string */
 176     mii.cbSize = sizeof(mii);
 177     mii.fMask = MIIM_STRING;
 178     mii.dwTypeData = (LPTSTR)szBufFmt;
 179     mii.cch = sizeof(szBufFmt) / sizeof(szBufFmt[0]);
 180     if (GetMenuItemInfo(hMenu,
 181                         uPosition,
 182                         uFlags,
 183                         &mii))
 184     {
 185         /* Format the string */
 186         va_start(vl, uFlags);
 187         _vsntprintf(szBuf,
 188                     (sizeof(szBuf) / sizeof(szBuf[0])) - 1,
 189                     szBufFmt,
 190                     vl);
 191         va_end(vl);
 192         szBuf[(sizeof(szBuf) / sizeof(szBuf[0])) - 1] = _T('\0');
 193
 194         /* Update the menu item */
 195         mii.dwTypeData = (LPTSTR)szBuf;
 196         if (SetMenuItemInfo(hMenu,
 197                             uPosition,
 198                             uFlags,
 199                             &mii))
 200         {
 201             return TRUE;
 202         }
 203     }
 204
 205     return FALSE;
 206 }
 207
 208 BOOL
 209 GetExplorerRegValueSet(IN HKEY hKey,
 210                        IN LPCTSTR lpSubKey,
 211                        IN LPCTSTR lpValue)
 212 {
 213     TCHAR szBuffer[MAX_PATH];
 214     HKEY hkSubKey;
 215     DWORD dwType, dwSize;
 216     BOOL Ret = FALSE;
 217
 218     _tcscpy(szBuffer,
 219             TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer"));
 220     _tcscat(szBuffer,
 221             _T("\\"));
 222     _tcscat(szBuffer,
 223             lpSubKey);
 224
 225     dwSize = sizeof(szBuffer);
 226     if (RegOpenKeyEx(hKey,
 227                      szBuffer,
 228                      0,
 229                      KEY_QUERY_VALUE,
 230                      &hkSubKey) == ERROR_SUCCESS)
 231     {
 232         ZeroMemory(szBuffer,
 233                    sizeof(szBuffer));
 234
 235         if (RegQueryValueEx(hkSubKey,
 236                             lpValue,
 237                             0,
 238                             &dwType,
 239                             (LPBYTE)szBuffer,
 240                             &dwSize) == ERROR_SUCCESS)
 241         {
 242             if (dwType == REG_DWORD && dwSize == sizeof(DWORD))
 243                 Ret = *((PDWORD)szBuffer) != 0;
 244             else if (dwSize > 0)
 245                 Ret = *((PUCHAR)szBuffer) != 0;
 246         }
 247
 248         RegCloseKey(hkSubKey);
 249     }
 250     return Ret;
 251 }
 252
 253
 254 static BOOL
 255 SetShellReadyEvent(IN LPCTSTR lpEventName)
 256 {
 257     HANDLE hEvent;
 258
 259     hEvent = OpenEvent(EVENT_MODIFY_STATE,
 260                        FALSE,
 261                        lpEventName);
 262     if (hEvent != NULL)
 263     {
 264         SetEvent(hEvent);
 265
 266         CloseHandle(hEvent);
 267         return TRUE;
 268     }
 269
 270     return FALSE;
 271 }
 272
 273 INT WINAPI
 274 _tWinMain(IN HINSTANCE hInstance,
 275           IN HINSTANCE hPrevInstance,
 276           IN LPTSTR lpCmdLine,
 277           IN INT nCmdShow)
 278 {
 279     ITrayWindow *Tray = NULL;
 280     HANDLE hShellDesktop = NULL;
 281     BOOL CreateShellDesktop = FALSE;
 282
 283     if (RegOpenKey(HKEY_CURRENT_USER,
 284                    TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer"),
 285                    &hkExplorer) != ERROR_SUCCESS)
 286     {
 287         TCHAR Message[256];
 288         LoadString(hInstance, IDS_STARTUP_ERROR, Message, 256);
 289         MessageBox(NULL, Message, NULL, MB_ICONERROR);
 290         return 1;
 291     }
 292
 293     hExplorerInstance = hInstance;
 294     hProcessHeap = GetProcessHeap();
 295
 296     hUser32 = GetModuleHandle(TEXT("USER32.DLL"));
 297     if (hUser32 != NULL)
 298     {
 299         DrawCapTemp = (DRAWCAPTEMP)GetProcAddress(hUser32,
 300                                                   PROC_NAME_DRAWCAPTIONTEMP);
 301     }
 302
 303     InitCommonControls();
 304     OleInitialize(NULL);
 305
 306     if (GetShellWindow() == NULL)
 307         CreateShellDesktop = TRUE;
 308
 309     /* FIXME - initialize SSO Thread */
 310
 311     if (CreateShellDesktop)
 312     {
 313         if (RegisterTrayWindowClass() && RegisterTaskSwitchWndClass())
 314         {
 315             Tray = CreateTrayWindow();
 316
 317             if (Tray != NULL)
 318                 hShellDesktop = DesktopCreateWindow(Tray);
 319         }
 320
 321         /* WinXP: Notify msgina to hide the welcome screen */
 322         if (!SetShellReadyEvent(TEXT("msgina: ShellReadyEvent")))
 323             SetShellReadyEvent(TEXT("Global\\msgina: ShellReadyEvent"));
 324     }
 325     else
 326     {
 327         /* A shell is already loaded. Parse the command line arguments
 328            and unless we need to do something specific simply display
 329            the desktop in a separate explorer window */
 330         /* FIXME */
 331     }
 332
 333     if (Tray != NULL)
 334         TrayMessageLoop(Tray);
 335
 336     if (hShellDesktop != NULL)
 337         DesktopDestroyShellWindow(hShellDesktop);
 338
 339     /* FIXME - shutdown SSO Thread */
 340
 341     OleUninitialize();
 342
 343     RegCloseKey(hkExplorer);
 344     hkExplorer = NULL;
 345
 346     return 0;
 347 }