dlls/commdlg/generic.c

   1 /*
   2  * COMMDLG/COMDLG32 functions
   3  *
   4  * Copyright 1994 Martin Ayotte
   5  * Copyright 1996 Albrecht Kleine
   6  * Copyright 1998,1999 Bertho Stultiens
   7  * Copyright 1999 Klaas van Gend
   8  */
   9
  10 #include "winbase.h"
  11 #include "commdlg.h"
  12 #include "debug.h"
  13
  14 DEFAULT_DEBUG_CHANNEL(commdlg)
  15
  16 #include "cdlg.h"
  17
  18 HINSTANCE16     COMMDLG_hInstance = 0;
  19 HINSTANCE       COMMDLG_hInstance32 = 0;
  20 static int      COMMDLG_Attach = 0;
  21
  22 /***********************************************************************
  23  *      COMMDLG_DllEntryPoint                   [COMMDLG.entry]
  24  *
  25  *    Initialization code for the COMMDLG DLL
  26  *
  27  * RETURNS:
  28  */
  29 BOOL WINAPI COMMDLG_DllEntryPoint(DWORD Reason, HINSTANCE16 hInst, WORD ds, WORD HeapSize, DWORD res1, WORD res2)
  30 {
  31         TRACE(commdlg, "(%08lx, %04x, %04x, %04x, %08lx, %04x)\n", Reason, hInst, ds, HeapSize, res1, res2);
  32         switch(Reason)
  33         {
  34         case DLL_PROCESS_ATTACH:
  35                 COMMDLG_Attach++;
  36                 if(COMMDLG_hInstance)
  37                 {
  38                         ERR(commdlg, "commdlg.dll instantiated twice!\n");
  39                         /*
  40                          * We should return FALSE here, but that will break
  41                          * most apps that use CreateProcess because we do
  42                          * not yet support seperate address-spaces.
  43                          */
  44                         return TRUE;
  45                 }
  46
  47                 COMMDLG_hInstance = hInst;
  48                 if(!COMMDLG_hInstance32)
  49                 {
  50                         if(!(COMMDLG_hInstance32 = LoadLibraryA("comdlg32.dll")))
  51                         {
  52                                 ERR(commdlg, "Could not load sibling comdlg32.dll\n");
  53                                 return FALSE;
  54                         }
  55                 }
  56                 break;
  57
  58         case DLL_PROCESS_DETACH:
  59                 if(!--COMMDLG_Attach)
  60                 {
  61                         COMMDLG_hInstance = 0;
  62                         if(COMMDLG_hInstance32)
  63                                 FreeLibrary(COMMDLG_hInstance32);
  64                 }
  65                 break;
  66         }
  67         return TRUE;
  68 }
  69
  70
  71 /***********************************************************************
  72  *      CommDlgExtendedError16                  [COMMDLG.26]
  73  *
  74  * Get the last error value if a commdlg function fails.
  75  *      RETURNS
  76  *              Current error value which might not be valid
  77  *              if a previous call succeeded.
  78  */
  79 DWORD WINAPI CommDlgExtendedError16(void)
  80 {
  81         return CommDlgExtendedError();
  82 }