System.Net.Socket.TFDSet.IsSet

• Up to Parent: TFDSet

Delphi

function IsSet(const ASocket: TSocket): Boolean; overload;

C++

bool __fastcall IsSet(TSocket* const ASocket)/* overload */;

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.Net.Socket.pas System.Net.Socket.hpp	System.Net.Socket	TFDSet

Description

Returns True if the specified socket is already part of the fd_set structure; it returns False otherwise.

Exceptions

A call to IsSet can raise any of the following exceptions:

Exception	Exception.Message	Scenarios
ESocketError	Invalid socket handle	The socket handle of the specified socket is invalid. The socket handle of a socket may be invalid in any of the following scenarios: You have closed the specified socket. You did not specify a socket handle when you created the specified socket, and since then you did not call any of the following functions that automatically create a socket handle for your socket: Bind Connect Listen ListenBroadcast OpenBroadcast

See Also

• System.Net.Socket.TSocket

• System.Net.Socket.TFDSet.Create
• System.Net.Socket.TFDSet.Set
• System.Net.Socket.TFDSet.Clear

• fd_set (MSDN)