MutexAcl.TryOpenExisting(String, MutexRights, Mutex) Method
Definition
Important
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Tries to open a specified named mutex, if it already exists, applies the desired access rights, and returns a value that indicates whether the operation succeeded.
public:
static bool TryOpenExisting(System::String ^ name, System::Security::AccessControl::MutexRights rights, [Runtime::InteropServices::Out] System::Threading::Mutex ^ % result);public static bool TryOpenExisting (string name, System.Security.AccessControl.MutexRights rights, out System.Threading.Mutex? result);static member TryOpenExisting : string * System.Security.AccessControl.MutexRights * Mutex -> boolPublic Shared Function TryOpenExisting (name As String, rights As MutexRights, ByRef result As Mutex) As BooleanParameters
- name
- String
The name of the mutex to be opened. If it's prefixed by "Global", it refers to a machine-wide mutex. If it's prefixed by "Local", or doesn't have a prefix, it refers to a session-wide mutex. Both prefix and name are case-sensitive.
- rights
- MutexRights
The desired access rights to apply to the returned mutex.
- result
- Mutex
When this method returns true, contains an object that represents the named mutex if the call succeeded, or null otherwise. This parameter is treated as uninitialized.
Returns
true if the named mutex was opened successfully; otherwise, false.
Exceptions
name is null
name is an empty string.
A Win32 error occurred.
The named mutex exists, but the user does not have the security access required to use it.
