Managed C++/CLI

1-Mar-07 2:39

Wrong forum. Ask in VC++[^] forum instead.

Prasad
Notifier using ATL | Operator new[],delete[][^]

prasad_som1-Mar-07 19:08

Getting IP Address [modified]

1-Mar-07 19:08

Bulky Fellow wrote:
What rubbish? Does that code look anything like VC++ to you? I guess
one look at the
first include must have fooled you. Did you even bother reading the
code?

If you can't solve something (and also give wrong directions like a
jackass), just
shut up and sit still instead of blabbering.

I'm not sure, why you have deleted this post ? If you think, this is right forum for this question, why you have posted it in VC++ fourm again.
You have not read sticky post by Chris[^] , before posting this question.

I wanted you to get good answers, thats why was directing you to VC++ forums.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Vichitram25-Feb-07 22:42

Vichitram

25-Feb-07 22:42

Hi,

I have a Client-Server Application. I am trying to get the IP address of the machine on which the client is running on at the Server Side. I want to store the IP address at the Server side and use it for future processing.

How to get the IP address of the client machine.

I am using VC++ 6.0

Thanks n regards

-- modified at 4:49 Monday 26th February, 2007

Re: Getting IP Address

prasad_som25-Feb-07 23:10

25-Feb-07 23:10

Use gethostbyname name.
MSDN has this example given,

#include <windows.h>
   #include <winsock.h>
   #include <stdio.h>

   void main()
   {
      WSADATA  wsaData;
      char     szHostname[100];
      HOSTENT *pHostEnt;
      int      nAdapter = 0;
      struct   sockaddr_in sAddr;

      if (WSAStartup(0x0101, &wsaData))
      {
         printf("WSAStartup failed %s\n", WSAGetLastError());
         return;
      }

      gethostname( szHostname, sizeof( szHostname ));
      pHostEnt = gethostbyname( szHostname );

      while ( pHostEnt->h_addr_list[nAdapter] )
      {
       // pHostEnt->h_addr_list[nAdapter] is the current address in host
       // order.

       // Copy the address information from the pHostEnt to a sockaddr_in
       // structure.
         memcpy ( &sAddr.sin_addr.s_addr, pHostEnt->h_addr_list[nAdapter],
                  pHostEnt->h_length);

         // Output the machines IP Address.
         printf("Name:    %s\nAddress: %s\n", pHostEnt->h_name,
                inet_ntoa(sAddr.sin_addr));

         nAdapter++;
      }
      WSACleanup();
      return;

   }

Vichitram wrote:
I am using VC++ 6.0

You should have asked this question in VC++ forum.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Getting IP Address

Christian Graus25-Feb-07 23:17

Put value on Form from FolderBrowserDialog

25-Feb-07 23:17

Vichitram wrote:

I am using VC++ 6.0

Then you're plainly not using C++/CLI

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: Getting IP Address

Hamid_RT1-Mar-07 6:49

Hamid_RT

1-Mar-07 6:49

See http://visualcpp.org/template_permalink.asp?id=104[^]

WhiteSky

Girkers24-Feb-07 21:54

Girkers

24-Feb-07 21:54

I am trying to use a FolderBrowserDialog to get a folder and set the path to a text field on my form. The first problem I came up against was a blank folder listing which I had to rectify by making the FolderBrowserDialog spawn as a STA ApartmentState. Now the problem is that I can't get the SelectedPath back onto my calling form.

Here is my code for my Click event to open the FolderBrowserDialog and the subsequent settings:

private: System::Void OnClicked_ID_GETPHOTO_DIR(System::Object^  sender, System::EventArgs^  e) {<br />
			Thread^ newThread = gcnew Thread ( gcnew ThreadStart( this, &Picture_Importer::Form_Start::Get_Directory ) );<br />
			newThread->SetApartmentState(ApartmentState::STA);<br />
			newThread->Start();<br />
		}<br />
<br />
private: void Get_Directory() {<br />
		 	// Set defaults for Browsing<br />
			this->folderBrowserDialog1->SelectedPath = "c:\\";<br />
			     <br />
			// Set the help text description for the FolderBrowserDialog.<br />
			this->folderBrowserDialog1->Description = "Select the directory that you want to use as the default.";<br />
<br />
			// Do not allow the user to create new files via the FolderBrowserDialog.<br />
			this->folderBrowserDialog1->ShowNewFolderButton = false;<br />
			<br />
			// Show the FolderBrowserDialog.<br />
			System::Windows::Forms::DialogResult result = folderBrowserDialog1->ShowDialog();<br />
			if ( result == ::DialogResult::OK )<br />
			//if (folderBrowserDialog1->ShowDialog() == ::DialogResult::OK)<br />
				  {<br />
					 folderName = folderBrowserDialog1->SelectedPath;<br />
					 this->ID_PHOTO_DIR->Text = folderName;<br />
				  }<br />
		 <br />
		 }

The problem is when I run the code and it gets to this->ID_PHOTO_DIR->Text = folderName; it chokes with

An unhandled exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll<br />
<br />
Additional information: Cross-thread operation not valid: Control 'ID_PHOTO_DIR' access from a thread other than the thread it was created on.

I am new to this programming language, so please be gentle with me. I appreciate what the message is saying I just don't get how to fix it.

Re: Put value on Form from FolderBrowserDialog

Girkers2-Mar-07 17:25

Girkers

2-Mar-07 17:25

I have found the answer on another forum with a very helpful person. The answer is here:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1297112&SiteID=1&mode=1

[C] Multithreading in windows

venetus24-Feb-07 16:05

24-Feb-07 16:05

Hi!!
I've been reading about multithreading in this page, but i can't compile the example written here.
I'm using Borland C++ 5.5.1 for Win32 and my config files are
bcc32

-I"C:\Borland\BCC55\Include"<br />
-L"C:\Borland\BCC55\Lib;C:\Borland\BCC55\Lib\PSDK<br />
-P<br />
-v-<br />
-w<br />
-D_WIN32_WINNT=0x0400

Ilink32

-v-<br />
-x<br />
-L"C:\Borland\BCC55\Lib;C:\Borland\BCC55\Lib\PSDK;C:\WINDOWS\system32"

And the error that the compiler gives me is

Borland C++ 5.5.1 for Win32 Copyright (c) 1993, 2000 Borland<br />
thread.c:<br />
Error E2268 thread.c 30: Call to undefined function '_beginthread' in function main()<br />
Error E2268 thread.c 46: Call to undefined function '_endthread' in function ThreadProc(void *)<br />
*** 2 errors in Compile ***<br />

can someone help me??
what am i doing wrong??
i'am a beginner in multithreading...
greetings!!

Christian Graus24-Feb-07 16:25

24-Feb-07 16:25

venetus wrote:
I'm using Borland C++ 5.5.1

Then you can't possibly be using C++/CLI. You could try the visual C++ forum, but a Borland forum would be more sensible, if there is one.

Newbie0025-Feb-07 0:03

Newbie00

25-Feb-07 0:03

As I can see there is no problem with multithreading, but with the functions You've used. Compiler doesn't know these functions. Have you included <process.h> ??

venetus25-Feb-07 2:47

25-Feb-07 2:47

i just copy and pasted the example...
what do you think i have to include???

venetus25-Feb-07 2:54

25-Feb-07 2:54

i've just compile the example with Dev and it worked. But i don't know why it doesn't work with Borland compiler...
Any hint?

Newbie0025-Feb-07 3:41

Newbie00

25-Feb-07 3:41

Which example? There are 3 examples Blush | :O

venetus25-Feb-07 3:43

25-Feb-07 3:43

this one "Download demo project in C - 3 Kb"
bye

Newbie0025-Feb-07 3:50

Newbie00

25-Feb-07 3:50

I've tried it with Builder 6.0 and it's worked fine.
Probably you haven't checked the Multi Threaded check box in File\new\other...\console wizard dialog. Make sure it's checked.

Christian Graus25-Feb-07 9:11

25-Feb-07 9:11

this is STILL the wrong forum to be talking about this.

[API] Add a dll

abbd24-Feb-07 4:55

abbd

24-Feb-07 4:55

i would add a dll in my project but i don't know how i can introduce him, iam viewing a reference but i can't add him, i work with Visual Studio 2005 please help me.
Thank you very mutch.

Re: [API] Add a dll

Christian Graus24-Feb-07 16:26

24-Feb-07 16:26

What is the DLL written in ? You can add references to COM dlls and .NET dlls ( assuming your question is in the right forum and you are using C++/CLI ), I don't think you can import plain dlls, you can p/invoke them ( again, if you really are using C++/CLI ).

Copy constructor

Karismatic23-Feb-07 17:09

Karismatic

23-Feb-07 17:09

hey guys,

few days ago somebody ask me that where it is mandatory to define copy constructor i.e without making an explicit call we can not solve our problem..

so i need to know what would be that condition as i am also searching for the same from 2-3 days ...

if anybody can help me in getting the answer i'll greateful to him/her..

Thank you

Regards,
Pankaj Sachdeva

Re: Copy constructor

prasad_som24-Feb-07 5:25