> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of [EMAIL PROTECTED] > Sent: 17 January 2007 22:12 > To: [email protected] > Subject: Re: [twsocket] WinSock error 10035 with TWSocketServer > > Hi Dan, > > > > > TWSocketClient* Client = dynamic_cast<TWSocketClient*>(Sender); > > > > AnsiString msg = Client->ReceiveStr(); > > > > > > The first line will execute, I think the second line will generate an > > > exception here. I4m not sure. Did you have it into an exception block > ? > > > > > > As far as I know the dynamic_cast is a kind of equivalent for 4is4 or > > > 4as4 operators in Delphi and some other languages. It is not the same > as > > > a type cast. I even think it will evaluate to false (null) because > > > Sender is of type TObject (yeah it "is" TWSocketClient, but compiler > > > dont know that). > > > > A dynamic cast is safer. Yes its similar to Delphi4s as/is operators. > In > > this case, this a pointer dynamic cast (rather than a reference), it > will > > return null/nil if Sender isn4t really a TWSocketClient, and the code > should > > then check for this. An alternative is to use a reference: > > > > TWSocketClient& Client = dynamic_cast<TWSocketClient&>(Sender); > > But Sender is a pointer - I didn't think you could typecast a pointer to a > reference. > > Regards, > > Bevan >
Oops, you're right. *Sender. Dan -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
