Cryptography Problem - C / C++ / MFC Discussion Boards

Multiple instances of Active X control don't paint correctly

rdeekonda14-Mar-05 1:14

14-Mar-05 1:14

Sir,
I have created an ATL composite control, and am putting it on multiple instances of a modeless dialog box. For each instance of the control I am calling its draw function with different parameters but the multiple instances all display with the same parameters. What is happening and how do I get around this problem.
Esteemed members please help.

Thanks

Deekonda Ramesh

Re: Multiple instances of Active X control don't paint correctly

rdeekonda15-Mar-05 1:09

rdeekonda

15-Mar-05 1:09

I need some help on this ,will somebody look at my problem

Deekonda Ramesh

splitting of string

Ankit Aneja14-Mar-05 0:49

Ankit Aneja

14-Mar-05 0:49

hello to all members
Can any one tell me
what is function or api to split the string
Thanks in advance

ankit

Re: splitting of string

Ravi Bhavnani14-Mar-05 1:56

Ravi Bhavnani

14-Mar-05 1:56

Use CString::Mid() to extract a substring from a CString.

/ravi

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Re: splitting of string

David Crow14-Mar-05 2:49

David Crow

14-Mar-05 2:49

Ankit Aneja wrote:
what is function or api to split the string

What string?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

stdafx.h?

Zizilamoroso14-Mar-05 0:48

Zizilamoroso

14-Mar-05 0:48

I have a very trivial question, but I can't get it working.

How do I change the path for "stdafx.h"? I want to move my "stdafx.h" file to another directory, say "include/stdafx.h". But I get the "unexpected end of file while looking for precompiled header directive" error while compiling.

my precompiled header project settings:
use pch through file: include/stdafx.h
precompiled header file: $(IntDir)/$(TargetName).pch

How do I do this?

using: [VISUAL STUDIO .NET] [WINXP PRO SP2]

Please help me regarding microsoft comm control

Member 176156314-Mar-05 0:14

Member 1761563

14-Mar-05 0:14

Hello ,

Please help me or give me some good information on microsoft communication control
version 6.0 .I need to use some of its functions .

Thanking you

Rohit Deshpande-
atotalgeek@gmail.com

Cryptography Problem

Jetli Jerry14-Mar-05 0:12

Jetli Jerry

14-Mar-05 0:12

Hi all,

i am developing simple application in VC6 that uses MS CryptoAPI.

One component of my application has login dialog which asks user for loginid,password. and i want to generate Public Key & private key pair for that user.( based on ids/password OR Randomly ) then onwards export publicc key to fixed location on remote server. And Other key will be in memory.

And when that user logs out of my application.... the private key will be lost.
How can i get same private key and public key pair next time when that user logs in.?

I have looked around this forum but not found this... Using MS cryptoapi can i get same keypairs on each login for same user? as far as i understood it is not. Am i right?

Then on i want to encrypt the message with public key of other users on system.
So that the other user can decrypt ( on remote machine ?) the message and read.

Thanks in advance.

Jetli
Constant Thing In World Is Change.

Error C1067

Duy Nghia13-Mar-05 23:59

Duy Nghia

13-Mar-05 23:59

Hi!
When I compile my program I met this error:
"d:\programming\microsoft visual studio\vc98\include\xlocale(467) : fatal error C1067: compiler limit : debug information module size exceeded"
Please help me!

Love

Re: Error C1067

Abhi Lahare14-Mar-05 2:30

Abhi Lahare

14-Mar-05 2:30

If you have not seen this before

from msdn
**********
compiler limit : debug information module size exceeded

This error could occur if a symbol has a decorated name exceeding 247 characters. Shorten the symbol name.

It could also mean that you have many symbols with long names or that a class, struct, or union has too many members.

Re: Error C1067

Duy Nghia14-Mar-05 2:33

Duy Nghia

14-Mar-05 2:33

Thank for your help. I've found the way to fix it. Because I declare many variable in one class.

Love

Re: Error C1067

David Crow14-Mar-05 2:53

David Crow

14-Mar-05 2:53

In the spirit of sharing information, how many member variables did this class have when the compiler error happened? How many did you have to remove?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Activex in Windows service

Ravi Jadhav13-Mar-05 23:27

Ravi Jadhav

13-Mar-05 23:27

I want to use ActiveX developed using vc++ in a windows service. Please help me how to do that.

Encapsulating executable

marco.marsella13-Mar-05 22:59

marco.marsella

13-Mar-05 22:59

Hello,

my app uses an external executable file (WinExec...) for doing certain operations.

My question is:
is there some way to "encapsulate" the external executable inside my application
without having to distribute two files?

Thanks,

Marco.

Re: Encapsulating executable

Renjith Ramachandran13-Mar-05 23:46

Renjith Ramachandran

13-Mar-05 23:46

yes i tried this earlier like

include the executable as a resource within your application, before using that extract in to a temp folder.

Ninety-eight percent of the thrill comes from knowing that the thing you designed works, and works almost the way you expected it would. If that happens, part of you is in that machine.

Re: Encapsulating executable

marco.marsella14-Mar-05 1:09

marco.marsella

14-Mar-05 1:09

Wonderful suggestion!

Can you be more precise about howto do this? (inclusion, extraction... I think I must somehow get the handle to the resource...)

Sorry, but I'm a starter...

Marco.

Re: Encapsulating executable

Renjith Ramachandran14-Mar-05 16:19

Renjith Ramachandran

14-Mar-05 16:19

You can add any resource via the resource editor ( Right Mouse click > import)
and for extracting...look the code below

UINT uSizeOfDll;

DWORD dwSizeOfDllInBytes;

DWORD dwBytes = 28672; //size of my resource

try
{

HRSRC hRes;

hRes = (HRSRC)::FindResource(
NULL,
MAKEINTRESOURCE(IDR_DLL1),
"DLL");

if (hRes == NULL )
{
DWORD dwErr = GetLastError();
return FALSE;

}

HGLOBAL hGlobal;

hGlobal = :: LoadResource(NULL,
hRes //Res Handle

);

if (hGlobal == NULL)
{

DWORD dw = GetLastError();
return FALSE;
}

//lock the file into global Memory
char *lpMem;

lpMem = (char*)LockResource(hGlobal); //File Pointer

if (lpMem == NULL)
{
DWORD dw = GetLastError();
return FALSE;

}

HANDLE hFile;

hFile = (HANDLE)CreateFile(m_szDllPath, //#name
GENERIC_READ|GENERIC_WRITE,//#Access
FILE_SHARE_READ | FILE_SHARE_WRITE,//#share
NULL, //$ def Security
CREATE_ALWAYS,//creation disposition
FILE_ATTRIBUTE_NORMAL, //attr
NULL//# templateFile
);

if (INVALID_HANDLE_VALUE
== hFile)
{
return FALSE;
}

DWORD dwWrritten = 0;

int nRes =
::WriteFile
(hFile,
(char*)lpMem,
dwBytes,
&dwWrritten,
NULL);

if (nRes == 0 )
{
DWORD dw = GetLastError();
}

CloseHandle(hFile );//# close file handle

}catch(...)
{
return FALSE;
}

Ninety-eight percent of the thrill comes from knowing that the thing you designed works, and works almost the way you expected it would. If that happens, part of you is in that machine.

Re: Encapsulating executable

David Crow14-Mar-05 2:54

David Crow

14-Mar-05 2:54

See if this article helps.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Changing default directory when Open... in SDI app

doctorpi13-Mar-05 22:50

doctorpi

13-Mar-05 22:50

Hi guys
What I have to do to change de default directory in a SDI app when I click in the menu Open?
I want to control the directory where the Open dialog opens to select the file.
Thanks
Doc

Re: Changing default directory when Open... in SDI app

David Crow14-Mar-05 3:06

David Crow

14-Mar-05 3:06

Override the DocManager::DoPromptFileName() method. That is where the CFileDialog object lives.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Changing default directory when Open... in SDI app

doctorpi14-Mar-05 3:09

doctorpi

14-Mar-05 3:09

Thanks David
Have I to do that, creating a new CMyDocManager class?
Doc

Re: Changing default directory when Open... in SDI app

David Crow14-Mar-05 3:21

David Crow

14-Mar-05 3:21

Derive your class from CDocManager just like you would any other:

class CMyDocManager : public CDocManager
{
public:
    virtual BOOL DoPromptFileName(CString& fileName, UINT nIDSTitle, DWORD lFlags, BOOL bOpenFileDialog, CDocTemplate* pTemplate);
};

Add the following in InitInstance() before creating any doc templates:

m_pDocManager = new CMyDocManager;

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Changing default directory when Open... in SDI app

doctorpi14-Mar-05 4:30

doctorpi

14-Mar-05 4:30

A little more difficult thhan expected, (due to _AfxAppendFilterSuffix) but I finally reached my target.
Thanks a lot
Doc

CListCtrl resize

DeEp_TrAnCe13-Mar-05 22:48

DeEp_TrAnCe

13-Mar-05 22:48

Hi! I need help with a little problem. I'm using the cListCtrl and i was wondering if there's a way to resize the width of the listbox dynamically? I tried searching but only found topics on resizing column widths. Please help...Thanks a lotü

Re: CListCtrl resize

Ravi Bhavnani14-Mar-05 2:07

Ravi Bhavnani

14-Mar-05 2:07

Since a CListCtrl is derived from CWnd, it can be resized using MoveWindow().

// Increase width of list control by 20 pixels
CRect rectListCtrl;
m_myListCtrl.GetWindowRect (&rectListCtrl);
ScreenToClient (&rectListCtrl);
rectCtrl.right += 20;
m_myListCtrl.MoveWindow (&rectCtrl);

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

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