dlls/shlwapi/shlwapi_main.c

   1 /*
   2  * SHLWAPI initialisation
   3  *
   4  *  Copyright 1998 Marcus Meissner
   5  *  Copyright 1998 Juergen Schmied (jsch)
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdarg.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #define NO_SHLWAPI_REG
  27 #define NO_SHLWAPI_STREAM
  28 #include "shlwapi.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  32
  33 DECLSPEC_HIDDEN HINSTANCE shlwapi_hInstance = 0;
  34
  35 /*************************************************************************
  36  * SHLWAPI {SHLWAPI}
  37  *
  38  * The Shell Light-Weight API dll provides a large number of utility functions
  39  * which are commonly required by Win32 programs. Originally distributed with
  40  * Internet Explorer as a free download, it became a core part of Windows when
  41  * Internet Explorer was 'integrated' into the O/S with the release of Win98.
  42  *
  43  * All functions exported by ordinal are undocumented by MS. The vast majority
  44  * of these are wrappers for Unicode functions that may not exist on early 16
  45  * bit platforms. The remainder perform various small tasks and presumably were
  46  * added to facilitate code reuse amongst the MS developers.
  47  */
  48
  49 /*************************************************************************
  50  * SHLWAPI DllMain
  51  *
  52  * NOTES
  53  *  calling oleinitialize here breaks some apps.
  54  */
  55 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
  56 {
  57         TRACE("%p 0x%x %p\n", hinstDLL, fdwReason, fImpLoad);
  58         switch (fdwReason)
  59         {
  60           case DLL_PROCESS_ATTACH:
  61             DisableThreadLibraryCalls(hinstDLL);
  62             shlwapi_hInstance = hinstDLL;
  63             break;
  64         }
  65         return TRUE;
  66 }
  67
  68 /***********************************************************************
  69  * DllGetVersion [SHLWAPI.@]
  70  *
  71  * Retrieve "shlwapi.dll" version information.
  72  *
  73  * PARAMS
  74  *     pdvi [O] pointer to version information structure.
  75  *
  76  * RETURNS
  77  *     Success: S_OK. pdvi is updated with the version information
  78  *     Failure: E_INVALIDARG, if pdvi->cbSize is not set correctly.
  79  *
  80  * NOTES
  81  *     You may pass either a DLLVERSIONINFO of DLLVERSIONINFO2 structure
  82  *     as pdvi, provided that the size is set correctly.
  83  *     Returns version as shlwapi.dll from IE5.01.
  84  */
  85 HRESULT WINAPI DllGetVersion (DLLVERSIONINFO *pdvi)
  86 {
  87   DLLVERSIONINFO2 *pdvi2 = (DLLVERSIONINFO2*)pdvi;
  88
  89   TRACE("(%p)\n",pdvi);
  90
  91   if (!pdvi)
  92     return E_INVALIDARG;
  93
  94   switch (pdvi2->info1.cbSize)
  95   {
  96   case sizeof(DLLVERSIONINFO2):
  97     pdvi2->dwFlags = 0;
  98     pdvi2->ullVersion = MAKEDLLVERULL(6, 0, 2800, 1612);
  99     /* Fall through */
 100   case sizeof(DLLVERSIONINFO):
 101     pdvi2->info1.dwMajorVersion = 6;
 102     pdvi2->info1.dwMinorVersion = 0;
 103     pdvi2->info1.dwBuildNumber = 2800;
 104     pdvi2->info1.dwPlatformID = DLLVER_PLATFORM_WINDOWS;
 105     return S_OK;
 106  }
 107
 108  WARN("pdvi->cbSize = %d, unhandled\n", pdvi2->info1.cbSize);
 109  return E_INVALIDARG;
 110 }
 111
 112 /*************************************************************************
 113  *      WhichPlatform()        [SHLWAPI.276]
 114  */
 115 UINT WINAPI WhichPlatform(void)
 116 {
 117     static const char szIntegratedBrowser[] = "IntegratedBrowser";
 118     static DWORD state = PLATFORM_UNKNOWN;
 119     DWORD ret, data, size;
 120     HMODULE hshell32;
 121     HKEY hKey;
 122
 123     if (state)
 124         return state;
 125
 126     /* If shell32 exports DllGetVersion(), the browser is integrated */
 127     state = PLATFORM_BROWSERONLY;
 128     hshell32 = LoadLibraryA("shell32.dll");
 129     if (hshell32)
 130     {
 131         FARPROC pDllGetVersion;
 132         pDllGetVersion = GetProcAddress(hshell32, "DllGetVersion");
 133         state = pDllGetVersion ? PLATFORM_INTEGRATED : PLATFORM_BROWSERONLY;
 134         FreeLibrary(hshell32);
 135     }
 136
 137     /* Set or delete the key accordingly */
 138     ret = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\Microsoft\\Internet Explorer", 0, KEY_ALL_ACCESS, &hKey);
 139     if (!ret)
 140     {
 141         size = sizeof(data);
 142         ret = RegQueryValueExA(hKey, szIntegratedBrowser, 0, 0, (BYTE *)&data, &size);
 143         if (!ret && state == PLATFORM_BROWSERONLY)
 144         {
 145             /* Value exists but browser is not integrated */
 146             RegDeleteValueA(hKey, szIntegratedBrowser);
 147         }
 148         else if (ret && state == PLATFORM_INTEGRATED)
 149         {
 150             /* Browser is integrated but value does not exist */
 151             data = TRUE;
 152             RegSetValueExA(hKey, szIntegratedBrowser, 0, REG_DWORD, (BYTE *)&data, sizeof(data));
 153         }
 154         RegCloseKey(hKey);
 155     }
 156
 157     return state;
 158 }
 159
 160 /***********************************************************************
 161  *             SHGetViewStatePropertyBag [SHLWAPI.515]
 162  */
 163 HRESULT WINAPI SHGetViewStatePropertyBag(PCIDLIST_ABSOLUTE pidl, PCWSTR bag_name, DWORD flags, REFIID riid, void **ppv)
 164 {
 165     FIXME("%p, %s, %#x, %s, %p stub.\n", pidl, debugstr_w(bag_name), flags, debugstr_guid(riid), ppv);
 166
 167     return E_NOTIMPL;
 168 }
 169
 170 /*************************************************************************
 171  *      SHIsLowMemoryMachine    [SHLWAPI.@]
 172  */
 173 BOOL WINAPI SHIsLowMemoryMachine(DWORD type)
 174 {
 175     FIXME("%d stub\n", type);
 176
 177     return FALSE;
 178 }