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OpenProcessToken

The OpenProcessToken function opens the access token associated with a process.

VB4-32,5,6
Declare Function OpenProcessToken Lib "advapi32.dll" Alias "OpenProcessToken" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long

Operating Systems Supported
Requires Windows NT 3.1 or later; Win9x/ME: Not supported

Library
Advapi32

Parameter Information
∑ ProcessHandle
Identifies the process whose access token is opened.

∑ DesiredAccess
Specifies an access mask that specifies the requested types of access to the access token. These requested access types are compared with the tokenís discretionary access-control list (ACL) to determine which accesses are granted or denied. The following access rights have been defined for access tokens.
TOKEN_ADJUST_DEFAULT
Required to change the default ACL, primary group, or owner of an access token.
TOKEN_ADJUST_GROUPS
Required to change the groups specified in an access token.
TOKEN_ADJUST_PRIVILEGES
Required to change the privileges specified in an access token.
TOKEN_ALL_ACCESS
Combines the STANDARD_RIGHTS_REQUIRED standard access rights and all individual access rights for tokens.
TOKEN_ASSIGN_PRIMARY
Required to attach a primary token to a process in addition to the SE_CREATE_TOKEN_NAME privilege.
TOKEN_DUPLICATE
Required to duplicate an access token.
TOKEN_EXECUTE
Combines the STANDARD_RIGHTS_EXECUTE standard access rights and the TOKEN_IMPERSONATE access right.
TOKEN_IMPERSONATE
Required to attach an impersonation access token to a process.
TOKEN_QUERY
Required to query the contents of an access token.
TOKEN_QUERY_SOURCE
Required to query the source of an access token.
TOKEN_READ
Combines the STANDARD_RIGHTS_READ standard access rights and the TOKEN_QUERY access right.
TOKEN_WRITE
Combines the STANDARD_RIGHTS_WRITE standard access rights and the TOKEN_ADJUST_PRIVILEGES, TOKEN_ADJUST_GROUPS, and TOKEN_ADJUST_DEFAULT access rights.

∑ TokenHandle
Points to a handle identifying the newly-opened access token when the function returns.

Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Examples

Related Functions

 

 


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