C / C++ / MFC Discussion Boards

Re: method of hook dll

HOW WHAT12-Mar-06 4:52

HOW WHAT

12-Mar-06 4:52

1.Your method if had some call hooked function may be happen some exception, right?

2.How to do like you say
"Also you can create a dll that debugs process in which it injected by inserting int3 instructions into functions you want to hook. If number of functions to hook =< 4 you can use hardware breakpoints, setting hardware breakpoints do not require any code modifications. "

Some time ago, I download codeproject about use debug process to inject dll, but in win98 all application will happen crash.

Re: method of hook dll

Anton Mikhalyov13-Mar-06 1:17

Anton Mikhalyov

13-Mar-06 1:17

HOW WHAT wrote:
1.Your method if had some call hooked function may be happen some exception, right?

Only when application threads are not synchronized and context of current thread(that now hooking function) is switched to other that calls hooked function.

HOW WHAT wrote:
2. How to do like you say

There is an error in code you just downloaded.
Armadillo protector uses the same technique and it works best on Windows 9x\Me
Give me the URL of this example or send it to my mail - sharebyte gmail com

ALTER TABLE

The Little Lloyd11-Mar-06 11:11

The Little Lloyd

11-Mar-06 11:11

Hello all!
Problem: I am using SQL frm within my C++ code.
Can anyone tell me HOW to change a name of a column of a table (for a MS Access 2000 database)?

Using "ALTER TABLE table_name RENAME COLUMN old_name TO new_name" seems not to work because of syntax failure !

Thanks

Re: ALTER TABLE

Jeremy Falcon11-Mar-06 15:12

Jeremy Falcon

11-Mar-06 15:12

What's the exact query you're using?

Jeremy Falcon

Re: ALTER TABLE

The Little Lloyd11-Mar-06 19:43

The Little Lloyd

11-Mar-06 19:43

The table is: Cars
The column I want to rename: Colour (of type CHARACTER VARYING(255))

ALTER TABLE Cars RENAME COLUMN Colour TO FormerColour CHARACTER VARYING(255)

Thanks

-- modified at 1:44 Sunday 12th March, 2006

Re: ALTER TABLE

Jeremy Falcon11-Mar-06 20:07

Jeremy Falcon

11-Mar-06 20:07

You don't need the the type of the column to rename it. This should do the job...

ALTER TABLE Cars RENAME COLUMN Colour TO FormerColour;

Also, CHARACTER VARYING is just a synonym for TEXT if you'd rather use that to keep your queries smaller.

Jeremy Falcon

Re: ALTER TABLE

The Little Lloyd11-Mar-06 20:52

The Little Lloyd

11-Mar-06 20:52

I've already done that. I still get an sql syntax error. It simply does not work Frown | :-(

with (my) access 2000. Other idea?

Re: ALTER TABLE

Jeremy Falcon12-Mar-06 11:19

Jeremy Falcon

12-Mar-06 11:19

Did you try running it specifically as a DDL query (under the Query/SQL Specific menu)?

If that still doesn't work, then I'm so glad I don't have to use Access anymore. Smile | :)

However, if you must use Access then you could always rename the column using ADOX rather than a SQL statement. Or if all else fails, you could still pull off the same thing by using separate queries like this...

ALTER TABLE Table1 ADD COLUMN New_Col TEXT(255);
UPDATE Table1 SET New_Col = Old_Col;
ALTER TABLE Table1 DROP COLUMN Old_Col;

Jeremy Falcon

Bold text

yaaqub11-Mar-06 10:22

yaaqub

11-Mar-06 10:22

HI,
I want my inputs to be BOLD TEXT.

JOHN,K

Re: Bold text

C^hris L^osinger11-Mar-06 10:37

C^hris L^osinger

11-Mar-06 10:37

ok

Cleek | Image Toolkits | Thumbnail maker

Re: Bold text

John R. Shaw11-Mar-06 22:55

John R. Shaw

11-Mar-06 22:55

I am still laughing, at least I told him not to post that again.

INTP
Every thing is relative...

Re: Bold text

Jörgen Sigvardsson11-Mar-06 11:02

Jörgen Sigvardsson

11-Mar-06 11:02

Create a bold font, and pass it to edit box's SetFont() method...

Re: Bold text

Hamid_RT11-Mar-06 17:17

Hamid_RT

11-Mar-06 17:17

use Createfont
http://msdn2.microsoft.com/en-us/library/2ek64h34.aspx[^]

Re: Bold text

Jörgen Sigvardsson11-Mar-06 22:18

Jörgen Sigvardsson

11-Mar-06 22:18

Why are you telling me this?

Re: Bold text

John R. Shaw11-Mar-06 22:48

John R. Shaw

11-Mar-06 22:48

I whish you where kidding, do not asks questions like this agian.

INTP
Every thing is relative...

path class

xyhan11-Mar-06 8:52

xyhan

11-Mar-06 8:52

Is there any MFC class for path operation? for example, to replace the API
GetCurrentPath,FindFirstFile functions?

Thanks

Re: path class

C^hris L^osinger11-Mar-06 10:38

C^hris L^osinger

11-Mar-06 10:38

CFileFind

Cleek | Image Toolkits | Thumbnail maker

Re: path class

Hamid_RT11-Mar-06 17:20

Hamid_RT

11-Mar-06 17:20

Hi,
GetCurrentDirectory

Network Address translation

mahesh_patil16611-Mar-06 8:50

mahesh_patil166

11-Mar-06 8:50

Hi all,
I want to find out how to achive network address translation in visual C++;

Re: Network Address translation

J512198212-Mar-06 17:27

J5121982

12-Mar-06 17:27

for the below reasons u need to go for NAT?

Why NAT?

• With the explosion of the Internet and the increase in home networks and business networks, the number of available IP addresses is simply not enough. The obvious solution is to redesign the address format to allow for more possible addresses. This is being developed (called IPv6), but will take several years to implement because it requires modification of the entire infrastructure of the Internet.
• Shortage of IP addresses is only one reason to use NAT
• For Security and Administration
• This is where NAT comes to the rescue.

How NAT works?

Network Address Translation allows a single device, such as a router to act as an agent between the Internet (or "public network") and a local (or "private") network. This means that only a single, unique IP address is required to represent an entire group of computers.

JAYARAJ

Visual C++ 2005 Express Edition

Anton Mikhalyov11-Mar-06 8:31

Anton Mikhalyov

11-Mar-06 8:31

Hi,
Can you help me with choosing what version of Microsoft IDE I need to use.
I am using this IDE for development of drivers and GUI wrappers for them, based on MFC library, I'm not planning to use .NET platform, only plain C++, no managed code.
Now when Microsoft announced that Express Edition is free for download I want to try it, but it is very lightweight version of IDE and I don't know is there is any reason to download this IDE? I know that it doesn't have resource editor, mfc library, but compiler is more compatible to ISO standarts. Please help me with choise Sniff | :^)

Currently I am using VS .NET 2003.

Re: Visual C++ 2005 Express Edition

oshah11-Mar-06 12:37

oshah

11-Mar-06 12:37

Unless you can find a way to remove the use of MFC (eg. go to pure native Win32 or C++/CLI), you have no choice But to go for Visual Studio Standard or higher.
VC Express does not include MFC. Therefore, your program won't work in the Express edition.

MFC... not exactly plain C++ now is it Smile | :)

Re: Visual C++ 2005 Express Edition

Anton Mikhalyov11-Mar-06 18:12

Anton Mikhalyov

11-Mar-06 18:12

oshah wrote:
MFC... not exactly plain C++ now is it ?

yep

oshah wrote:
VC Express does not include MFC. Therefore, your program won't work in the Express edition.

this is not a problem, mfc is easy to integrate, because I have betas,
but beta version is very buggy product, thats why I will not use it...

Re: Visual C++ 2005 Express Edition

oshah12-Mar-06 10:12

oshah

12-Mar-06 10:12

Are you trying to force MFC into Express edition. Every other attempt I've seen to add MFC to Express has either ended in failure or the programmer getting Visual Studio Standard in one way or the other.

Trying to shoehorn MFC into Express is not only dangerous, you risk infringing on your EULA for Visual Studio. Let's say you started to integrate MFC into Express now. How long will it take? 50 man-hours? 100 man-hours (there's a lot of code to alter)? Let's go for the lower number, for fairness. Now let's assume you're a low paid Junior developer that earns $15 an hour (you need to be an expert/experienced developer to know how to port MFC, but once again, let's assume for fairness), the time you lose by having to add MFC to express edition is 50 hours: 50 * 15 = $750. You've just cost you and your company $750.00.

To compare, Visual Studio Standard costs less than $270 at Amazon. For the time you lost shoehorning MFC into Express edition, you could have bought two copies of Visual Studio Standard!

To conclude, forcing MFC to work in Express edition is not only a waste of time, it's a waste of money!

Re: Visual C++ 2005 Express Edition

John R. Shaw11-Mar-06 23:27

John R. Shaw

11-Mar-06 23:27

Look, if you plan on centering your life around the Windows Operating System then go ahead and use the latest tools from Microsoft. All other tools probably require that you have a basic knowledge (and then some) of how every things actually works.

Do not ask me how every thing works, because I have forgotten, I run on autopilot now days.

There is one farley stable entity and that is the [programming] language.

Use whatever IDE you want to, just remember the basics.

INTP
Every thing is relative...

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.