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Re: Getting started with embedded systems

markkuk11-Feb-02 20:06

markkuk

11-Feb-02 20:06

Wilmer kohlman wrote:
? Should I use a microprocessor or a microcontroller
? How exactly should I program the mP or mC.

What are the size/power/cost/time constraints of the project? Usually the cheapest and fastest to construct approach is to use an ordinary PC (or just the motherboard) as the controller. Custom designed boards should be used only when absolutely necessary, or if you are planning for mass production. A SBC (single board computer) is the intermediate solution between a PC and full custom design.

Same principle applies to software, use standard operating systems, compilers, libraries and other tools whenever possible.

Runtime resizing/moving of controls

Todd Hoop11-Feb-02 2:59

Todd Hoop

11-Feb-02 2:59

Hello,

A few weeks ago, I read an article here on CP that included a class that added runtime resizing and moving of controls by use of the mouse (like the resource editor in VC). I can't find the article now and was wondering if anyone recalls this article and could point me to it.

Thanks!

Todd

Re: Runtime resizing/moving of controls

Mazdak11-Feb-02 3:09

Mazdak

11-Feb-02 3:09

You mean this one?

Mazy

Don't Marry a Person You Can Live With...
Marry Someone You Can Not Live Without

Re: Runtime resizing/moving of controls

Todd Hoop11-Feb-02 7:08

Todd Hoop

11-Feb-02 7:08

Mazy,

Actually, that was not it. But I was able to find the correct one by searching for the base class that the article covered (CRectTracker). I couldn't remember the base class until I read that article.

The acticle I was after is http://www.codeproject.com/miscctrl/controltracker.asp

Thanks for the help as it pointed me in the right direction!

Todd

Enumerating TCP ports and mapping them to PID (for XP)

4-Feb-02 3:33

Hello,

I'd like to suggest someone to write an article about enumerating all open TCP/UDP ports with mapping them to the owning applications under Windows XP. Unfortunately, I don't have a time for it but I've written an example on C so you could use my code Smile | :)

// portsenumxp.cpp (Windows XP)
//
// This example will show how you can enumerate
// all open TCP and UDP ports and map them to
// the owning application. It uses undocumented
// functions from iphlpapi.dll which were found
// by reversing netstat.exe.
//
//
// (c) 2002 Ashot Oganesyan K (ashot@protect-me.com)
// (c) 2002 SmartLine, Inc. (http://www.protect-me.com)

#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <Iphlpapi.h>

typedef struct _MIB_TCPROW_EX
{
DWORD dwState; // MIB_TCP_STATE_*
DWORD dwLocalAddr;
DWORD dwLocalPort;
DWORD dwRemoteAddr;
DWORD dwRemotePort;
DWORD dwProcessId;
} MIB_TCPROW_EX, *PMIB_TCPROW_EX;

typedef struct _MIB_TCPTABLE_EX
{
DWORD dwNumEntries;
MIB_TCPROW_EX table[ANY_SIZE];
} MIB_TCPTABLE_EX, *PMIB_TCPTABLE_EX;

typedef struct _MIB_UDPROW_EX
{
DWORD dwLocalAddr;
DWORD dwLocalPort;
DWORD dwProcessId;
} MIB_UDPROW_EX, *PMIB_UDPROW_EX;

typedef struct _MIB_UDPTABLE_EX
{
DWORD dwNumEntries;
MIB_UDPROW_EX table[ANY_SIZE];
} MIB_UDPTABLE_EX, *PMIB_UDPTABLE_EX;

/*
DWORD
WINAPI
AllocateAndGetTcpExTableFromStack(
OUT PMIB_TCPTABLE_EX *pTcpTableEx,
IN BOOL bOrder,
IN HANDLE hAllocHeap,
IN DWORD dwAllocFlags,
IN DWORD dwProtocolVersion; // 2 - TCP, 23 - TCPv6 (size of *pTcpTableEx must be 56!)
);
*/
typedef DWORD (WINAPI *PROCALLOCATEANDGETTCPEXTABLEFROMSTACK)(PMIB_TCPTABLE_EX*,BOOL,HANDLE,DWORD,DWORD);
PROCALLOCATEANDGETTCPEXTABLEFROMSTACK lpfnAllocateAndGetTcpExTableFromStack = NULL;

/*
DWORD
WINAPI
AllocateAndGetUdpExTableFromStack(
OUT PMIB_UDPTABLE_EX *pUdpTable,
IN BOOL bOrder,
IN HANDLE hAllocHeap,
IN DWORD dwAllocFlags,
IN DWORD dwProtocolVersion; // 2 - UDP, 23 - UDPv6 (size of *pUdpTable must be 28!)
);
*/
typedef DWORD (WINAPI *PROCALLOCATEANDGETUDPEXTABLEFROMSTACK)(PMIB_UDPTABLE_EX*,BOOL,HANDLE,DWORD,DWORD);
PROCALLOCATEANDGETUDPEXTABLEFROMSTACK lpfnAllocateAndGetUdpExTableFromStack = NULL;

BOOL LoadExIpHelperProcedures(void)
{
HMODULE hModule;

hModule = LoadLibrary(_T("iphlpapi.dll"));
if (hModule == NULL)
return FALSE;

// XP and later
lpfnAllocateAndGetTcpExTableFromStack = (PROCALLOCATEANDGETTCPEXTABLEFROMSTACK)GetProcAddress(hModule,"AllocateAndGetTcpExTableFromStack");
if (lpfnAllocateAndGetTcpExTableFromStack == NULL)
return FALSE;

// XP and later
lpfnAllocateAndGetUdpExTableFromStack = (PROCALLOCATEANDGETUDPEXTABLEFROMSTACK)GetProcAddress(hModule,"AllocateAndGetUdpExTableFromStack");
if (lpfnAllocateAndGetUdpExTableFromStack == NULL)
return FALSE;

return TRUE;
}

void main(void)
{
DWORD dwLastError,
dwSize;
PMIB_TCPTABLE_EX lpBuffer = NULL;
PMIB_UDPTABLE_EX lpBuffer1 = NULL;

if (!LoadExIpHelperProcedures())
return;

dwLastError = lpfnAllocateAndGetTcpExTableFromStack(&lpBuffer,TRUE,GetProcessHeap(),0,2);
if (dwLastError == NO_ERROR)
{
printf(_T("Local IP\tLocal Port\tRemote Ip\tRemote Port\tPID\n\n"));

for (dwSize = 0; dwSize < lpBuffer->dwNumEntries; dwSize++)
{
// Local IP Address
printf(_T("%d.%d.%d.%d\t"),LOBYTE(LOWORD(lpBuffer->table[dwSize].dwLocalAddr)),HIBYTE(LOWORD(lpBuffer->table[dwSize].dwLocalAddr)),LOBYTE(HIWORD(lpBuffer->table[dwSize].dwLocalAddr)),HIBYTE(HIWORD(lpBuffer->table[dwSize].dwLocalAddr)));

// Local Port
printf(_T("%d\t"),((lpBuffer->table[dwSize].dwLocalPort & 0xFF00) >> 8) + ((lpBuffer->table[dwSize].dwLocalPort & 0x00FF) << 8));

// Remote IP Address
printf(_T("%d.%d.%d.%d\t"),LOBYTE(LOWORD(lpBuffer->table[dwSize].dwRemoteAddr)),HIBYTE(LOWORD(lpBuffer->table[dwSize].dwRemoteAddr)),LOBYTE(HIWORD(lpBuffer->table[dwSize].dwRemoteAddr)),HIBYTE(HIWORD(lpBuffer->table[dwSize].dwRemoteAddr)));

// Remote Port
if (lpBuffer->table[dwSize].dwRemoteAddr)
printf(_T("%d\t"),((lpBuffer->table[dwSize].dwRemotePort & 0xFF00) >> 8) + ((lpBuffer->table[dwSize].dwRemotePort & 0x00FF) << 8));
else
printf(_T("0\t"));

// PID
printf(_T("%lu\n"),lpBuffer->table[dwSize].dwProcessId);
}
}

dwLastError = lpfnAllocateAndGetUdpExTableFromStack(&lpBuffer1,TRUE,GetProcessHeap(),0,2);
if (dwLastError == NO_ERROR)
{
printf(_T("Local IP\tLocal Port\tPID\n\n"));

for (dwSize = 0; dwSize < lpBuffer1->dwNumEntries; dwSize++)
{
// Local IP Address
printf(_T("%d.%d.%d.%d\t"),LOBYTE(LOWORD(lpBuffer1->table[dwSize].dwLocalAddr)),HIBYTE(LOWORD(lpBuffer1->table[dwSize].dwLocalAddr)),LOBYTE(HIWORD(lpBuffer1->table[dwSize].dwLocalAddr)),HIBYTE(HIWORD(lpBuffer1->table[dwSize].dwLocalAddr)));

// Local Port
printf(_T("%d\t"),((lpBuffer1->table[dwSize].dwLocalPort & 0xFF00) >> 8) + ((lpBuffer1->table[dwSize].dwLocalPort & 0x00FF) << 8));

// PID
printf(_T("%lu\n"),lpBuffer1->table[dwSize].dwProcessId);
}
}

if (lpBuffer)
HeapFree(GetProcessHeap(),0,lpBuffer);

if (lpBuffer1)
HeapFree(GetProcessHeap(),0,lpBuffer1);
}

barcode generator and reader source

murd28-Jan-02 12:41

murd

28-Jan-02 12:41

hi,

I have been trying to find a source code that will generated a barcode from a membership ID number and also be able to read this barcode to call up the mmembers details from a database, does any body know were i could find something like this.

thanks for any possible info about this.

Re: barcode generator and reader source

moliate9-Feb-02 8:19

moliate

9-Feb-02 8:19

There are many different standards for barcodes. Do you want EAN-13? There are also many different ways to generate barcodes. One of the simplest would be to download (or make) a barcode font.

Anyway, here is a place to start:

http://www.makebarcode.com/stdorg/orgs.html

They have some general information to help you find the best solution for you.

/moliate

Space Invaders.

Arinte27-Jan-02 5:59

Arinte

27-Jan-02 5:59

There was a project posted here not to long ago. It was a demo of a space invaders like game. But now I can't seem to find it. I was ranked pretty high.

Re: Space Invaders.

PJ Arends27-Jan-02 6:15

PJ Arends

27-Jan-02 6:15

http://www.codeproject.com/useritems/invasion.asp

---
Sonork 100.11743 Chicken Little

It may be that your sole purpose in life is simply to serve as a warning to others.

winsock file transfer

Kuniva17-Jan-02 10:35

Kuniva

17-Jan-02 10:35

I would like to request an article that explains how to send a file (binary) over a winsock tcp connection. (MFC)

Kuniva
--------------------------------------------
God gave man a penis and a brain but not enough blood to make both of 'em work at the same time.

Re: winsock file transfer

Kashif Manzoor11-Feb-02 3:48

Kashif Manzoor

11-Feb-02 3:48

Kuniva,
Please see the attached sample code of a Winsock client. With a little bit of improvisation and MFC socket programming knowledge you could easily change it to your needs.
/***************************************/

/* This is the sample code for a client that send and receives some data from a server.*/

DownloadFileFromInternet(CString strAddress)
{

char buff[1024];
int s;
struct sockaddr_in a;
struct hostent *h;
WSADATA wsaData;
int SERVER_PORT = 1223;// The server port to which the client will connect.

// This call initializes the Winsock.dll
WSAStartup(0x101, &wsaData);

// Initializing the sockaddr_in datastructer with all zeroes.
memset(&a,0,sizeof(a));

// First assume an Internet dotted form address e.g. 198.168.0.1
a.sin_family = AF_INET;
a.sin_port = htons(SERVER_PORT); // Connect to the server port
a.sin_addr.s_addr = inet_addr("127.0.0.1"); // Connect to the localhost. Replace this address with the IP address of the server.

/////////////////////////////////////////////
// You may use descriptive Internet (e.g. www.microsoft.com) instead of the dotted (e.g. 127.0.0.1) one.
h = gethostbyname("www.microsoft.com"); // change this address to the desired server's address.
if (h != NULL)
{
a.sin_addr.s_addr = ((LPIN_ADDR)h->h_addr)->s_addr;
}
else
{
AfxMessageBox("Cannot resolve hostname\n");
WSACleanup();
return FALSE;
}

// create the socket.
s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (s == 0)
{
AfxMessageBox("Cannot establish connection: ");
WSACleanup(); // Winsock.dll cleanup code
return FALSE;
}

// socket succesfully created, now we may connect to the server
if (connect(s, (struct sockaddr *)&a, sizeof(a)))
{
//Can not establish the connection to the server
WSACleanup();
return FALSE;
}

// Connection established with the server. Start receiving data from the server
int k=0;
k = recv(s, buff, 1024, 0);
if (k<0)
{
// An error occurred while trying to receive data
closesocket(s); // close the opened socket.
WSACleanup(); // clean up Winsock.dll
return FALSE;
}
buff[k] = '\0';
// we will NULL terminate the received data from the server.

// We will send "WA-ALIKUMASALAM" to the server.
k=0;
while (k < int(strlen("WA-ALIKUMASALAM")))
{ // keep sending until all the data is sent.
k = send(s,"WA-ALIKUMASALAM",strlen("WA-ALIKUMASALAM"),0);
}

// We are finished. Now its time to close the socket
closesocket(s);
return TRUE;
}

/*****************************************/

Software Engineer (Techlogix (pvt)ltd)
Visiting Faculty Informatics, Lahore

Impressive Online "Game" Link needed

Paul Watson14-Jan-02 1:07

Paul Watson

14-Jan-02 1:07

Thought I would try something different in the requests here.

Basically we need to show to a client that a web interface can be pretty damned "spiffy" and very interactive. They think that ALL web interfaces are like Amazon or Yahoo.

Now I could write my own interface with real-time alerts, videos, animations and all the bells and whistles (including a moving graph), but that would be a big waste of money if they turned around and said "no, we are dropping the project."

I know the first response to this will be a Flash interface, but we want to also find a good non-flash, DHTML-using interface.

So does anyone have any links to games like this? Preferably related to stock markets, buying shares etc.

thanks in advance Smile | :)

regards,
Paul Watson
Bluegrass
Cape Town, South Africa

"The greatest thing you will ever learn is to love, and be loved in return" - Moulin Rouge

Martin Marvinski wrote:
Unfortunatly Deep Throat isn't my cup of tea

Do you Sonork? I do! 100.9903 Stormfront

Re: Impressive Online "Game" Link needed

Konstantin Vasserman14-Jan-02 4:13

Konstantin Vasserman

14-Jan-02 4:13

Probably not exactly what you want but pretty impressive IMO DHTML page is http://www.htmlguru.com/. I don't like the usability of the interface and graphics not the best, but it looks pretty cool for pure DHTML.

C# or C++ sample of the following VB example

shypht9-Jan-02 18:27

shypht

9-Jan-02 18:27

It seems like the writers at MicroSoft just love VB, and any example that does anything that comes near to getting my interest is done in VB, when I would love to see it in VC or C#. So, does anyone have a C# or VC++ example of the following :
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnadvnet/html/vbnet10142001.asp

DLL Dialog

Matt Newman9-Jan-02 11:25

Matt Newman

9-Jan-02 11:25

I want to make a DLL with a dialog that I can call from my app. Can anyone give me a basic example of how to do this? I would like a a DLL source that just launches a dialog on a call from a basic program. Or can someone give me tips on how to do this? I have found the articles here do not focus on the basics of DLLs. Thanks if you can help.

- Suspicious | :suss:

Matt Newman Suspicious | :suss:

-Sonork ID: 100.11179:BestSnowman

Re: DLL Dialog

jan larsen28-Feb-02 4:06

jan larsen

28-Feb-02 4:06

I am not sure if this is what you wanted, but to create a dll in VC5 all you have to do is this:

Create a new win32 dll project (empty).

Create a .h and .c file like this:
/////////////////////////////////////////////////////////////////////
// File quicktest.h
/////////////////////////////////////////////////////////////////////
#ifndef _WINDOWS_
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
/////////////////////////////////////////////////////////////////////
#ifdef _cplusplus
extern "C"
{
#endif
/////////////////////////////////////////////////////////////////////
void WINAPI SomeFunc(PSTR someText);
/////////////////////////////////////////////////////////////////////
#ifdef _cplusplus
}
#endif
/////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////
// File quicktest.c
/////////////////////////////////////////////////////////////////////
void WINAPI SomeFunc(PSTR someText)
{
MessageBox(GetDesktopWindow(), someText, TEXT("Some title"), MB_OK);
}// someText()
/////////////////////////////////////////////////////////////////////

And while those files are cooking, you take a new file and call it something like: quicktest.def, and put in something like this:
LIBRARY quicktest
DESCRIPTION 'Some functions for blah blah'
EXPORTS
SomeFunc @1

Then you press compile, and voila!, a dll...

Jan

"It could have been worse, it could have been ME!"

Drawing bitmaps

Ray Kinsella8-Jan-02 6:10

Ray Kinsella

8-Jan-02 6:10

Many moons ago I took a course in MFC, during the course of which we where shown some very simple MFC code which allowed a user to draw shapes on a view and save them to a file. I need something a little more sophisticated (although I amn't talking about developing a 'paint' application), my intention is to provide a simple canvas for the user to draw on, and write the results to a bitmap file. Anyone know any simple examples of this type of thing ?

Regards

Ray

"Je Suis Mort De Rire"

Re: Drawing bitmaps

Paul Watson8-Jan-02 6:24

Paul Watson

8-Jan-02 6:24

Try using Visual Basic. It takes about 10 lines of code to make an app like you are suggesting...

Poke tongue | ;-P

Hey you asked for the reply! Let this be a lesson.... The Lounge is for irrelevant, aimless, meandering, long winded, pompous opinion soap boxing. Not advertising or intelligent questions... Big Grin | :-D

regards,
Paul Watson
Bluegrass
Cape Town, South Africa

Do you Sonork? I do! 100.9903 Stormfront

"The greatest thing you will ever learn is to love, and be loved in return" - Moulin Rouge

Re: Drawing bitmaps

Ray Kinsella8-Jan-02 6:31

Ray Kinsella

8-Jan-02 6:31

Its ultimately for Window CE, using Embedded Visual Basic is NOT an option. Big Grin | :-D

Regards

Ray

"Je Suis Mort De Rire"

Re: Drawing bitmaps

Paul Watson8-Jan-02 6:36

Paul Watson

8-Jan-02 6:36

Ray Kinsella wrote:
Its ultimately for Window CE, using Embedded Visual Basic is NOT an option.

Read the front page of CodeProject! The latest news is of Windows CE .NET which supports amongst other things VB.NET.

VB triumphs again! Wooooooohoooooo...

Big Grin | :-D

regards,
Paul Watson
Bluegrass
Cape Town, South Africa

Do you Sonork? I do! 100.9903 Stormfront

"The greatest thing you will ever learn is to love, and be loved in return" - Moulin Rouge

Re: Drawing bitmaps

Chris Maunder8-Jan-02 11:46

Chris Maunder

8-Jan-02 11:46

You know what's really scaring me Paul? The day is fast approaching when I will need to add a VB .NET tab to the main page.

mercy. Frown | :(

cheers,
Chris Maunder

Re: Drawing bitmaps

Paul Watson9-Jan-02 5:01

Paul Watson

9-Jan-02 5:01

Chris Maunder wrote:
when I will need to add a VB .NET tab to the main page

How so? It is weird but I must have spent at most 1hour playing with VB.NET the whole time I have had .NET. The rest of the time I have been going oooo and aaaaah over C# or ASP.NET (using C# as the language.)

I am not seeking a higher position in peoples eyes by using C# rather than VB.NET. It is just that C# has really grabbed my interest. It works a lot more like I think than even VB used to.

regards,
Paul Watson
Bluegrass
Cape Town, South Africa

Do you Sonork? I do! 100.9903 Stormfront

"The greatest thing you will ever learn is to love, and be loved in return" - Moulin Rouge

Re: Drawing bitmaps

PJ Arends8-Jan-02 6:32

PJ Arends

8-Jan-02 6:32

Paul Watson wrote:
Let this be a lesson.... The Lounge is for irrelevant, aimless, meandering, long winded, pompous opinion soap boxing

Just too bad this is not the Lounge OMG | :OMG:

---
Sonork 100.11743 Chicken Little

It may be that your sole purpose in life is simply to serve as a warning to others.

Re: Drawing bitmaps

Paul Watson8-Jan-02 6:38

Paul Watson

8-Jan-02 6:38

PJ Arends wrote:
Just too bad this is not the Lounge

hehe, it is now... Big Grin | :-D

regards,
Paul Watson
Bluegrass
Cape Town, South Africa

Do you Sonork? I do! 100.9903 Stormfront

"The greatest thing you will ever learn is to love, and be loved in return" - Moulin Rouge

Re: Drawing bitmaps

Ravi Bhavnani8-Jan-02 6:33

Ravi Bhavnani

8-Jan-02 6:33

Ray, this should fit the bill nicely:
http://www.codeguru.com/ce/PocketScribble2.html

/ravi

"There is always one more bug..."
ravib@ravib.com
http://www.ravib.com

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