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3575Re: [libertybasic] Re: Help with dll call

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  • Doyle Whisenant
    Mar 2, 2002
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      neilrichardcorcoran wrote:
      >
      > Does anyone know where I could find some source code to a program that
      > uses the registry?

      I have code for EZwin, probably not what you want! I'll translate the
      relevant part for you.

      This is the call:

      ; open the registry
      RetValue = RegOpenKeyEx((HKEY)HKEY_CURRENT_USER,
      "Software\\lcc\\lcclnk", 0, KEY_READ, (HKEY)&hKey)

      IF RetValue <> ERROR_SUCCESS
      SHOW "Error" STR "Unable to open registry"
      END IF


      I've changed the EZwin syntax so that it is more "readable" for you! HTH

      ************************************************************************************
      The Whistler Platform SDK states:


      RegOpenKeyEx
      The RegOpenKeyEx function opens the specified registry key.

      LONG RegOpenKeyEx(
      HKEY hKey, // handle to open key
      LPCTSTR lpSubKey, // subkey name
      DWORD ulOptions, // reserved
      REGSAM samDesired, // security access mask
      PHKEY phkResult // handle to open key
      );

      Parameters

      hKey
      [in] Handle to a currently open key or any of the following predefined
      reserved handle values:
      HKEY_CLASSES_ROOT
      HKEY_CURRENT_CONFIG
      HKEY_CURRENT_USER
      HKEY_LOCAL_MACHINE
      HKEY_USERS
      Windows NT/2000: HKEY_PERFORMANCE_DATA
      Windows 95/98: HKEY_DYN_DATA

      lpSubKey
      [in] Pointer to a null-terminated string containing the name of the
      subkey to open. If this parameter is NULL or a pointer to an empty
      string, the function will open a new handle to the key identified by the
      hKey parameter. In this case, the function will not close the handles
      previously opened.

      ulOptions
      Reserved; must be zero.

      samDesired
      [in] An access mask that specifies the desired access rights to the key.
      This parameter can be a combination of the following values. Value
      Meaning
      KEY_CREATE_LINK Permission to create a symbolic link.
      KEY_CREATE_SUB_KEY Permission to create subkeys.
      KEY_ENUMERATE_SUB_KEYS Permission to enumerate subkeys.
      KEY_EXECUTE Permission for read access.
      KEY_NOTIFY Permission for change notification.
      KEY_QUERY_VALUE Permission to query subkey data.
      KEY_SET_VALUE Permission to set subkey data.
      KEY_ALL_ACCESS Combines the KEY_QUERY_VALUE, KEY_ENUMERATE_SUB_KEYS,
      KEY_NOTIFY, KEY_CREATE_SUB_KEY, KEY_CREATE_LINK, and KEY_SET_VALUE
      access rights, plus all the standard access rights except SYNCHRONIZE.
      KEY_READ Combines the STANDARD_RIGHTS_READ, KEY_QUERY_VALUE,
      KEY_ENUMERATE_SUB_KEYS, and KEY_NOTIFY access rights.
      KEY_WRITE Combines the STANDARD_RIGHTS_WRITE, KEY_SET_VALUE, and
      KEY_CREATE_SUB_KEY access rights.


      phkResult
      [out] Pointer to a variable that receives a handle to the opened key.
      When you no longer need the returned handle, call the RegCloseKey
      function to close it.
      Return Values
      If the function succeeds, the return value is ERROR_SUCCESS.

      If the function fails, the return value is a nonzero error code defined
      in Winerror.h. You can use the FormatMessage function with the
      FORMAT_MESSAGE_FROM_SYSTEM flag to get a generic description of the
      error.

      Remarks
      Unlike the RegCreateKeyEx function, the RegOpenKeyEx function does not
      create the specified key if the key does not exist in the registry.

      Windows 95/98: No registry subkey or value name may exceed 255
      characters.

      Requirements
      Windows NT/2000: Requires Windows NT 3.1 or later.
      Windows 95/98: Requires Windows 95 or later.
      Header: Declared in Winreg.h; include Windows.h.
      Library: Use Advapi32.lib.
      Unicode: Implemented as Unicode and ANSI versions on Windows NT/2000.


      --
      Doyle Whisenant
      mechanic@...
      http://www.mechanic.0catch.com/
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