windows.c

   1 /* windows.c */
   2 /* implements Windows specific functions */
   3 #include "display-gtk.h"
   4 #include <windows.h>
   5
   6 static HKEY hkey;
   7
   8 static int get_from_registry(HKEY hkey, const char *key)
   9 {
  10         DWORD value;
  11         DWORD len = 4;
  12         LONG success;
  13
  14         success = RegQueryValueEx(hkey, TEXT(key), NULL, NULL,
  15                                 (LPBYTE) &value, &len );
  16         if (success != ERROR_SUCCESS)
  17                 return FALSE; /* that's what happens the first time we start */
  18         return value;
  19 }
  20
  21 void subsurface_open_conf(void)
  22 {
  23         LONG success;
  24
  25         success = RegCreateKeyEx(HKEY_CURRENT_USER, TEXT("Software\\subsurface"),
  26                                 0L, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS,
  27                                 NULL, &hkey, NULL);
  28         if (success != ERROR_SUCCESS)
  29                 printf("CreateKey Software\\subsurface failed %ld\n", success);
  30 }
  31
  32 void subsurface_set_conf(char *name, pref_type_t type, const void *value)
  33 {
  34         switch (type) {
  35         case PREF_BOOL:
  36                 /* we simply store the value as DWORD */
  37                 RegSetValueEx(hkey, TEXT(name), 0, REG_DWORD, &value, 4);
  38                 break;
  39         case PREF_STRING:
  40                 RegSetValueEx(hkey, TEXT(name), 0, REG_SZ, value, strlen(value));
  41         }
  42 }
  43
  44 const void *subsurface_get_conf(char *name, pref_type_t type)
  45 {
  46         LONG success;
  47         char *string;
  48         int len;
  49
  50         switch (type) {
  51         case PREF_BOOL:
  52                 return get_from_registry(hkey, name) ? (void *) 1 : NULL;
  53         case PREF_STRING:
  54                 string = malloc(80);
  55                 len = 80;
  56                 success = RegQueryValueEx(hkey, TEXT(name), NULL, NULL,
  57                                         (LPBYTE) string, (LPDWORD)&len );
  58                 if (success != ERROR_SUCCESS) {
  59                         /* that's what happens the first time we start - just return NULL */
  60                         free(string);
  61                         return NULL;
  62                 }
  63                 return string;
  64         }
  65         /* we shouldn't get here */
  66         return NULL;
  67 }
  68
  69 void subsurface_close_conf(void)
  70 {
  71         if (RegFlushKey(hkey) != ERROR_SUCCESS)
  72                 printf("RegFlushKey failed \n");
  73         RegCloseKey(hkey);
  74 }