VB编程Windows屏幕保护密码(2)

2026-02-10

模块代码：

　　Option Explicit

　　Const ERROR_SUCCESS = 0&

　　Const ERROR_BADDB = 1009&

　　Const ERROR_BADKEY = 1010&

　　Const REG_EXPAND_SZ = 2&

　　Const REG_BINARY = 3&

　　Const KEY_QUERY_VALUE = &H1&

　　Const KEY_ENUMERATE_SUB_KEYS = &H8&

　　Const KEY_NOTIFY = &H10&

　　Const READ_CONTROL = &H20000

　　Const STANDARD_RIGHTS_READ = READ_CONTROL

　　Const KEY_READ = STANDARD_RIGHTS_READ Or KEY_QUERY_VALUE Or KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY

　　Const HKEY_CURRENT_USER = &H80000001

　　Dim hKey As Long, MainKeyHandle As Long

　　Dim rtn As Long, lBuffer As Long, sBuffer As String, SubKey As String

　　Dim lBufferSize As Long

　　Declare Function RegOpenKeyEx Lib "advapi32.dll" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, phkResult As Long) As Long

　　Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long

　　Declare Function RegQueryValueEx Lib"advapi32.dll" Alias"Reg QueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, ByVal lpData As String, lpcbData As Long) As Long

　　Function GetBinaryValue(Entry As String)

　　MainKeyHandle = HKEY_CURRENT_USER

　　SubKey = "Control Paneldesktop"

　　rtn = RegOpenKeyEx(MainKeyHandle, SubKey, 0, KEY_READ, hKey)

　　 If rtn = ERROR_SUCCESS Then ‘如果HKEY_CURRENT_USERControl Paneldesktop键被成功打开

　　 lBufferSize = 1

　　 rtn = RegQueryValueEx(hKey, Entry, 0, REG_BINARY, 0, lBufferSize) ‘读取ScreenSave_Data的值

　　 sBuffer = Space(lBufferSize)

　　 rtn = RegQueryValueEx(hKey, Entry, 0, REG_BINARY, sBuffer, lBufferSize)

　　 If rtn = ERROR_SUCCESS Then ‘如果读取ScreenSave_Data的值成功

　　 rtn = RegCloseKey(hKey)

　　 GetBinaryValue = sBuffer ‘函数返回ScreenSave_Data的值