Thread: VC++ socket

I have been doing socket programming lately. I then tried to implement it on Visual C++. I encountered a few problems. I will post the codes first.

Form1.h

Code:

#include <string>
public:
char* str;
	 
System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
	     String^ temp = textBox1->Text;
	     MarshalString(str, temp); //convert String^(temp) to char*(str)
	      if ((result2 = send(sockfd, str, strlen(str), 0)) == -1)  //flags are left to 0
	            {
	                printf("Send failed: %d\n", result2);
	                exit(1);
	            }

Server.cpp

Code:

#include "stdafx.h"
#include "Form1.h"
#include <windows.h>
#include <winsock2.h>


if ((result2 = send(sockfd, msg, strlen(msg), 0)) == -1)  //flags are left to 0
{
printf("Send failed: %d\n", result2);
return 1;
}

Note that i have excluded irrelevant code. Here are my Form1.h and Server.cpp. I have a textbox, "textBox1" which i will trype something in it before i click "button1" to send something to the client. However, i do not know how to listen on the event button1_Click in Server.cpp

Here is my pseudocode of what i wish to do.

Code:

listen for button1 click event
if button is click
get the message from the textbox1 and store it into the str variable
initiate send

So... have you done accept? connect? Any of the other networking bits at all?

Yes, i have done all. It is working perfectly. But now, what i am trying to do is, whenever i click the button1, i want to get the text from textBox1 and send it to the client using send().

Thank you for answering my questions. Let me clarify further.
1. Server.ccp is where the main() resides.
2. Form1.h is where the event listener resides (by default - after i double click the button1 for the first time).
3. both files are in the same project.
4. In the project, From1.h resides in the "Header Files" folder, while the Server.cpp resides in the "Source Files" folder
5. I didnt try sending message from Form1. What i did was, in Server.cpp, where the main() is, i declared and string and used send(). Everything is done in the main().

I hope it is clearer now. I am sorry for not being clear.

I made Server.cpp as the parent. So, here is the code

server.cpp

Code:

        Form1 newForm1;
	char* str;
	newForm1.button1_Click(newForm1, newForm1.button1_Click)
	{
		String^ temp = newForm1.textBox1->Text;
		newForm1.MarshalString(str, temp);
		send(sockfd, str, strlen(str), 0);
	}

Form1.h

Code:

public: System::Windows::Forms::Button^  button1;
public: System::Windows::Forms::TextBox^  textBox1;
public: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e){}

Am i doing the right thing?
Another question is, what arguments should i pass for "newForm1.button1_Click()" in Server.cpp ? (to call the funtion from Form1.h)Thank you.

I have attached the Server.cpp and form1.h files. Please guide me how i can accomplish this. I would prefer to make the Server.cpp as the parent as the main() resides there.

Ok, Here are my new setups. I could not get the socket initialisation dont. The error messagebox "Socket Failed" was called. I have attached new ones.