dlls/comdlg32/cdlg32.c

   1 /*
   2  *  Common Dialog Boxes interface (32 bit)
   3  *  Find/Replace
   4  *
   5  * Copyright 1999 Bertho A. Stultiens
   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 #include "wingdi.h"
  27 #include "winuser.h"
  28 #include "commdlg.h"
  29 #include "cderr.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(commdlg);
  33
  34 #include "cdlg.h"
  35
  36
  37 HINSTANCE       COMDLG32_hInstance = 0;
  38
  39 static DWORD COMDLG32_TlsIndex = TLS_OUT_OF_INDEXES;
  40
  41 static HINSTANCE        SHELL32_hInstance;
  42 static HINSTANCE        SHFOLDER_hInstance;
  43
  44 /* ITEMIDLIST */
  45 LPITEMIDLIST (WINAPI *COMDLG32_PIDL_ILClone) (LPCITEMIDLIST);
  46 LPITEMIDLIST (WINAPI *COMDLG32_PIDL_ILCombine)(LPCITEMIDLIST,LPCITEMIDLIST);
  47 LPITEMIDLIST (WINAPI *COMDLG32_PIDL_ILGetNext)(LPITEMIDLIST);
  48 BOOL (WINAPI *COMDLG32_PIDL_ILRemoveLastID)(LPCITEMIDLIST);
  49 BOOL (WINAPI *COMDLG32_PIDL_ILIsEqual)(LPCITEMIDLIST, LPCITEMIDLIST);
  50 UINT (WINAPI *COMDLG32_PIDL_ILGetSize)(LPCITEMIDLIST);
  51
  52 /* SHELL */
  53 LPVOID (WINAPI *COMDLG32_SHAlloc)(DWORD);
  54 DWORD (WINAPI *COMDLG32_SHFree)(LPVOID);
  55 BOOL (WINAPI *COMDLG32_SHGetFolderPathW)(HWND,int,HANDLE,DWORD,LPWSTR);
  56
  57 /***********************************************************************
  58  *      DllMain  (COMDLG32.init)
  59  *
  60  *    Initialization code for the COMDLG32 DLL
  61  *
  62  * RETURNS:
  63  *      FALSE if sibling could not be loaded or instantiated twice, TRUE
  64  *      otherwise.
  65  */
  66 static const char GPA_string[] = "Failed to get entry point %s for hinst = %p\n";
  67 #define GPA(dest, hinst, name) \
  68         if(!(dest = (void*)GetProcAddress(hinst,name)))\
  69         { \
  70           ERR(GPA_string, debugstr_a(name), hinst); \
  71           return FALSE; \
  72         }
  73
  74 BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD Reason, LPVOID Reserved)
  75 {
  76         TRACE("(%p, %d, %p)\n", hInstance, Reason, Reserved);
  77
  78         switch(Reason)
  79         {
  80         case DLL_PROCESS_ATTACH:
  81                 COMDLG32_hInstance = hInstance;
  82                 DisableThreadLibraryCalls(hInstance);
  83
  84                 SHELL32_hInstance = GetModuleHandleA("SHELL32.DLL");
  85
  86                 if (!SHELL32_hInstance)
  87                 {
  88                         ERR("loading of shell32 failed\n");
  89                         return FALSE;
  90                 }
  91
  92                 /* ITEMIDLIST */
  93                 GPA(COMDLG32_PIDL_ILIsEqual, SHELL32_hInstance, (LPCSTR)21L);
  94                 GPA(COMDLG32_PIDL_ILCombine, SHELL32_hInstance, (LPCSTR)25L);
  95                 GPA(COMDLG32_PIDL_ILGetNext, SHELL32_hInstance, (LPCSTR)153L);
  96                 GPA(COMDLG32_PIDL_ILClone, SHELL32_hInstance, (LPCSTR)18L);
  97                 GPA(COMDLG32_PIDL_ILRemoveLastID, SHELL32_hInstance, (LPCSTR)17L);
  98                 GPA(COMDLG32_PIDL_ILGetSize, SHELL32_hInstance, (LPCSTR)152L);
  99
 100                 /* SHELL */
 101
 102                 GPA(COMDLG32_SHAlloc, SHELL32_hInstance, (LPCSTR)196L);
 103                 GPA(COMDLG32_SHFree, SHELL32_hInstance, (LPCSTR)195L);
 104
 105                 /* for the first versions of shell32 SHGetFolderPathW is in SHFOLDER.DLL */
 106                 COMDLG32_SHGetFolderPathW = (void*)GetProcAddress(SHELL32_hInstance,"SHGetFolderPathW");
 107                 if (!COMDLG32_SHGetFolderPathW)
 108                 {
 109                   SHFOLDER_hInstance = LoadLibraryA("SHFOLDER.DLL");
 110                   GPA(COMDLG32_SHGetFolderPathW, SHFOLDER_hInstance,"SHGetFolderPathW");
 111                 }
 112
 113                 break;
 114
 115         case DLL_PROCESS_DETACH:
 116             if (COMDLG32_TlsIndex != TLS_OUT_OF_INDEXES) TlsFree(COMDLG32_TlsIndex);
 117             if(SHFOLDER_hInstance) FreeLibrary(SHFOLDER_hInstance);
 118             break;
 119         }
 120         return TRUE;
 121 }
 122 #undef GPA
 123
 124 /***********************************************************************
 125  *      COMDLG32_AllocMem                       (internal)
 126  * Get memory for internal datastructure plus stringspace etc.
 127  *      RETURNS
 128  *              Success: Pointer to a heap block
 129  *              Failure: null
 130  */
 131 LPVOID COMDLG32_AllocMem(
 132         int size        /* [in] Block size to allocate */
 133 ) {
 134         LPVOID ptr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
 135         if(!ptr)
 136         {
 137                 COMDLG32_SetCommDlgExtendedError(CDERR_MEMALLOCFAILURE);
 138                 return NULL;
 139         }
 140         return ptr;
 141 }
 142
 143
 144 /***********************************************************************
 145  *      COMDLG32_SetCommDlgExtendedError        (internal)
 146  *
 147  * Used to set the thread's local error value if a comdlg32 function fails.
 148  */
 149 void COMDLG32_SetCommDlgExtendedError(DWORD err)
 150 {
 151         TRACE("(%08x)\n", err);
 152         if (COMDLG32_TlsIndex == TLS_OUT_OF_INDEXES)
 153           COMDLG32_TlsIndex = TlsAlloc();
 154         if (COMDLG32_TlsIndex != TLS_OUT_OF_INDEXES)
 155           TlsSetValue(COMDLG32_TlsIndex, (LPVOID)(DWORD_PTR)err);
 156         else
 157           FIXME("No Tls Space\n");
 158 }
 159
 160
 161 /***********************************************************************
 162  *      CommDlgExtendedError                    (COMDLG32.@)
 163  *      CommDlgExtendedError                    (COMMDLG.26)
 164  *
 165  * Get the thread's local error value if a comdlg32 function fails.
 166  *      RETURNS
 167  *              Current error value which might not be valid
 168  *              if a previous call succeeded.
 169  */
 170 DWORD WINAPI CommDlgExtendedError(void)
 171 {
 172         if (COMDLG32_TlsIndex != TLS_OUT_OF_INDEXES)
 173           return (DWORD_PTR)TlsGetValue(COMDLG32_TlsIndex);
 174         else
 175           return 0; /* we never set an error, so there isn't one */
 176 }