reactos/base/applications/logoff/misc.c

   1 #include "precomp.h"
   2
   3 static INT
   4 LengthOfStrResource(IN HINSTANCE hInst,
   5                     IN UINT uID)
   6 {
   7     HRSRC hrSrc;
   8     HGLOBAL hRes;
   9     LPWSTR lpName, lpStr;
  10
  11     if (hInst == NULL)
  12     {
  13         return -1;
  14     }
  15
  16     /* There are always blocks of 16 strings */
  17     lpName = (LPWSTR)MAKEINTRESOURCE((uID >> 4) + 1);
  18
  19     /* Find the string table block */
  20     if ((hrSrc = FindResourceW(hInst, lpName, (LPWSTR)RT_STRING)) &&
  21         (hRes = LoadResource(hInst, hrSrc)) &&
  22         (lpStr = (WCHAR*) LockResource(hRes)))
  23     {
  24         UINT x;
  25
  26         /* Find the string we're looking for */
  27         uID &= 0xF; /* position in the block, same as % 16 */
  28         for (x = 0; x < uID; x++)
  29         {
  30             lpStr += (*lpStr) + 1;
  31         }
  32
  33         /* Found the string */
  34         return (int)(*lpStr);
  35     }
  36     return -1;
  37 }
  38
  39 INT
  40 AllocAndLoadString(OUT LPTSTR *lpTarget,
  41                    IN HINSTANCE hInst,
  42                    IN UINT uID)
  43 {
  44     INT ln;
  45
  46     ln = LengthOfStrResource(hInst,
  47                              uID);
  48     if (ln++ > 0)
  49     {
  50         (*lpTarget) = (LPTSTR)LocalAlloc(LMEM_FIXED,
  51                                          ln * sizeof(TCHAR));
  52         if ((*lpTarget) != NULL)
  53         {
  54             INT Ret;
  55             if (!(Ret = LoadString(hInst, uID, *lpTarget, ln)))
  56             {
  57                 LocalFree((HLOCAL)(*lpTarget));
  58             }
  59             return Ret;
  60         }
  61     }
  62     return 0;
  63 }