rosapps/calc/settings.c

   1 /*
   2  *  ReactOS calc
   3  *
   4  *  settings.c
   5  *
   6  *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
  24 #include <windows.h>
  25 #include <tchar.h>
  26
  27 #include "main.h"
  28 #include "settings.h"
  29
  30
  31 BOOL CheckResult(LONG error)
  32 {
  33     if (error != ERROR_SUCCESS) {
  34         PTSTR msg;
  35         if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
  36                 0, error, MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT), (PTSTR)&msg, 0, NULL))
  37                     MessageBox(NULL, msg, szTitle, MB_ICONERROR | MB_OK);
  38         else
  39                 MessageBox(NULL, _T("Error"), szTitle, MB_ICONERROR | MB_OK);
  40         LocalFree(msg);
  41         return FALSE;
  42     }
  43     return TRUE;
  44 }
  45
  46 void LoadSettings(void)
  47 {
  48     HKEY  hKey;
  49     DWORD dwSize;
  50     LONG  result;
  51     char  szSubKey[] = "Software\\ReactWare\\Calculator";
  52
  53     // Open the key
  54     result = RegOpenKeyEx(HKEY_CURRENT_USER, szSubKey, 0, KEY_READ, &hKey);
  55     if (!CheckResult(result)) return;
  56
  57     // Read the settings
  58     dwSize = sizeof(CALC_TYPES);
  59     result = RegQueryValueEx(hKey, _T("Preferences"), NULL, NULL, (LPBYTE)&CalcType, &dwSize);
  60     if (!CheckResult(result)) goto abort;
  61
  62 abort:
  63     // Close the key
  64     RegCloseKey(hKey);
  65 }
  66
  67 void SaveSettings(void)
  68 {
  69     HKEY hKey;
  70     LONG  result;
  71     char szSubKey1[] = "Software";
  72     char szSubKey2[] = "Software\\ReactWare";
  73     char szSubKey3[] = "Software\\ReactWare\\Calculator";
  74
  75     // Open (or create) the key
  76     hKey = NULL;
  77     result = RegCreateKeyEx(HKEY_CURRENT_USER, szSubKey1, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL);
  78     if (!CheckResult(result)) return;
  79     RegCloseKey(hKey);
  80     hKey = NULL;
  81     result = RegCreateKeyEx(HKEY_CURRENT_USER, szSubKey2, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL);
  82     if (!CheckResult(result)) return;
  83     RegCloseKey(hKey);
  84     hKey = NULL;
  85     result = RegCreateKeyEx(HKEY_CURRENT_USER, szSubKey3, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL);
  86     if (!CheckResult(result)) return;
  87
  88     // Save the settings
  89     result = RegSetValueEx(hKey, _T("Preferences"), 0, REG_DWORD, (LPBYTE)&CalcType, sizeof(CALC_TYPES));
  90     if (!CheckResult(result)) goto abort;
  91
  92 abort:
  93     // Close the key
  94     RegCloseKey(hKey);
  95 }