There are differences; many of these center on the security permissions
flags passed in the various API calls. The following code works to write
registry values in both Win95 and NT:
Creating/ opening a registry key - uses RegCreateKey()
DECLARE INTEGER RegCreateKey IN Win32API ;
INTEGER nhKey, ;
STRING @cSubKey, ;
INTEGER @nKeyHandle
#define HKEY_LOCAL_MACHINE -2147483646 && 1*(bitset(0,31)+2)
*// Key options:
#define REG_OPTION_RESERVED 0 && Parameter is reserved
#define REG_CLASS_DEFAULT "" && Default key class
#define REG_SECURITY_DEFAULT 0 && Default security descriptor
#define REG_OPTION_NON_VOLATILE 0 && Key is preserved when system is
rebooted
#define REG_OPTION_VOLATILE 1 && Key is not preserved when system
is rebooted
*// Security Access Masks:
#define KEY_QUERY_VALUE 1
#define KEY_SET_VALUE 2
#define KEY_CREATE_SUB_KEY 4
#define KEY_ENUMERATE_SUB_KEYS 8
#define KEY_NOTIFY 16
#define KEY_CREATE_LINK 32
#define KEY_READ KEY_QUERY_VALUE + KEY_ENUMERATE_SUB_KEYS + KEY_NOTIFY
#define KEY_WRITE KEY_SET_VALUE + KEY_CREATE_SUB_KEY
#define KEY_ALL_ACCESS KEY_READ + KEY_WRITE + KEY_CREATE_LINK
*
* cKey is the string value of a key relative to HKEY_LOCAL_MACHINE
*
m.nResult = RegCreateKey( HKEY_LOCAL_MACHINE, ;
m.cKey + CHR(0), ;
@nNewKey )
m.nCurrentKey = nNewKey
Creating a value under the currently open key:
DECLARE INTEGER RegSetValueEx IN Win32API ;
INTEGER nKeyHandle, ;
STRING cValueName, ;
INTEGER nReserved, ;
INTEGER nType, ;
STRING cBuffer, ;
INTEGER nBufferSize
*
* Assume we're writing a value of type REG_SZ (a null-terminated string)
*
*// Value Types:
#define REG_NONE 0 && No value type
#define REG_SZ 1 && Unicode nul terminated string
#define REG_EXPAND_SZ 2 && Unicode null terminated string
#define REG_BINARY 3 && Free form binary
#define REG_DWORD 4 && 32-bit number
#define REG_DWORD_LITTLE_ENDIAN 4 && 32-bit number (same as
REG_DWORD)
#define REG_DWORD_BIG_ENDIAN 5 && 32-bit number
#define REG_LINK 6 && Symbolic Link (unicode)
#define REG_MULTI_SZ 7 && Multiple Unicode strings
#define REG_RESOURCE_LIST 8 && Resource list in the
resource map
#define REG_FULL_RESOURCE_DESCRIPTOR 9 && Resource list in the
hardware desc
#define REG_RESOURCE_REQUIREMENTS_LIST 10 &&
m.nType = REG_SZ
m.cValueName = "MyNewValueID"
m.cNewValue = m.cNewValue + CHR(0)
nResult = RegSetValueEx( ;
m.nCurrentKey, ;
m.cValueName, ;
REG_OPTION_RESERVED, ;
m.nType, ;
m.cNewValue, ;
LEN(m.cNewValue) -1 )
>
>Does anybody know of any difference between 95 and NT registry calling? I
have written a number of programs to read from and write to the Windows 95
registry and all works ok! When I tried these programs on my NT PC, nothing
happened - nothing returned from registry and nothing written to registry. I
made the entries manually and tried reading them but nothing was returned??
>
Attachment Converted: Edward M Rauh.vcf
