c++builder

I'm using Borland C++ Builder 6 to try to do some simple string concatenation. However, I have run into what I think is an interesting issue. Everything I am able to find online states that I should be able to do something as simple as this: String word = "a" + "b" + "c"; However, when I try to compile this code, I get an "Invalid pointer addition" error. I could go as far as assigning each part to its own variable and adding each of those together to get the desired output. However, I think that's unnecessary given how simple of an example this is. The only way I have been able to get

I'm using C++Builder 10.1 Berlin to write a simple WebSocket server application, which listens on a port for some commands sent from a web browser, like Google Chrome. On my Form, I have a TMemo, TButton and TIdHTTPServer, and I have this code: void __fastcall TForm1::Button1Click(TObject *Sender) { IdHTTPServer1->Bindings->DefaultPort = 55555; IdHTTPServer1->Active = true; } void __fastcall TForm1::IdHTTPServer1Connect(TIdContext *AContext) { Memo1->Lines->Add(AContext->Binding->PeerIP); Memo1->Lines->Add( AContext->Connection->IOHandler->ReadLn(enUTF8)); Memo1->Lines->Add( AContext->Data-

I am setting up a UDP socket and trying to bind what should be a valid network broadcast address to it (192.168.202.255 : 23456), but bind fails with error 10049, WSAEADDRNOTAVAIL . If I use a localhost broadcast address, 127.0.0.255, it succeeds. WSAEADDRNOTAVAIL 's documentation says that "The requested address is not valid in its context. This normally results from an attempt to bind to an address that is not valid for the local computer. This can also result from connect, sendto, WSAConnect, WSAJoinLeaf, or WSASendTo when the remote address or port is not valid for a remote computer (for

I am trying to connect a C++ Builder app with a .NET service app, and would like the .NET service app to be able to send events back to the C++ Builder app. Is there a working example of a C++ Builder app which can handle COM events? There was an error in the DocWiki regarding handling COM Events. I was able to collect some examples from various places, and put them together here for reference. The .NET application has the following: using System; using System.IO; using System.Runtime.InteropServices; namespace IPractLib01 { // // GUID's to use for the COM objects. [Guid("ACD03FE3-E506-4D87