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I want to put a phonebook style database into my VC6 application, what is the best way to do that?
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You could define a database entry class and serialize a collection of them to a file. See this[^] series of articles if you'd like to know more about serialization and versioning.
/ravi
My new year's resolution: 2048 x 1536
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ravib@ravib.com
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Hi Everybody,
I have a tough nut to crack here.
My Application (which sits all day in the Systray as cute little icon sitting next to the clock) has to do some tasks when the User wants to shutdown/logoff/reboot Windows. In detail, this is some file copying, maybe start a backup or whatever.
In order to achieve this, I catch WM_QUERYENDSESSION.
But, Windows isn't patient enough for my application! Windows keeps on shutting down after a few seconds, way too early for me... it get's worse as soon as a User has changed the Registry (HKEY_CURRENT_USER\Control Panel\Desktop\WaitToKillAppTimeout and HKEY_CURRENT_USER\Control Panel\Desktop\HungAppTimeout)
Okay, so I thought I just have to return 0 in WM_QUERYENDSESSION, check what the user wanted (logoff/shutdown/reboot) and manually shutdown Windows (ExitWindowsEx) once I finished my tasks.
So far so good, as long as the user logs off or shuts down.
But what if he chose "Reboot"? According to MSDN, it is not possible to determine if the user Shuts down or Reboots Windows while in WM_QUERYENDSESSION... but that is exactly the one info I need.
Operating system is XP, but it would be cool if it also works in elder OS (like Windows 9x/Me and NT 4.0).
Do you have any idea?
PS: BTW, I'm using Visual Studio .NET, but code in C using pure WinAPI (no Wrapper like MFC or any Classes like in C++). I did not know where to put this question, if this is the wrong forum, please let me know.
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  #include <stdio.h>
#import "C:\Project1.dll" no_namespace
class RemoteDllLoader
{
_Class1Ptr ptr;
public:
RemoteDllLoader()
{
try
{
CoInitialize(NULL);
ptr.CreateInstance(__uuidof(Class1));
}
catch(_com_error &e)
{
_bstr_t err = e.Description();
MessageBox(NULL,err,"Error",0);
}
}
~RemoteDllLoader()
{
CoUninitialize();
}
void Test()
{
ptr->Test1("Hi");
}
int Test2(int n1,int n2)
{
return ptr->Test2(n1,n2);
}
};
this is the code that i used to load an activex dll.but I want to load a particular dll by specifying it dll name given by a parameter.Can it be possible? I appreciate any possible answer.Thnxs
Viraj Siriwardana
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Hey. My name is Stan and i'm from Norway. I'm a newbie with programming and
c++.
I have a couple of probably stupid questions, but i would be real glad if someone could answer them. 
1: First of all, Visual c++'s only a c++ compiler? not its own language?
2: How fast does programming generally develops? is it likely to buy a "out of date" book (and if so, how long does it take? are a book out of date just a year after you bought it?), or doesent the langueges itself change very mutch over the years?
3: When you start to learn how to program, is it common to start with ms dos progs?
4: Can anyone explain how to think in bigger programs? mayby point out some smaller problems to a bigger problem? Having problems understanding the bigger programs.
5: What does anyone here think about job oppertuneties in the future? 5-10 years? is it going to be alot of competition?
6: My last question is about the different type of professions.
Lets say that a person could program in c++. Could he have the skill to program both games, apps, web sites, etc? Can someone give me some typical job oppertuneties for a programmer. how long education is it?
I know its alot of questions and that they are somewhat strange, and i know that its alot to ask for a person to answer all these questions, but if anyone her could just try to answer atleast some of them, it would have been greatly appreciated. A super thanks in advance 
Stan
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1, vc is a C++ compiler with a powerful class library called MFC , by which you can get a lot conveniece in programming.
3, i start my first program 4 years ago with dos-like progs.
4, i don't think it's easy for someone to competence all type of programmers.
i'm very poor in English
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Thanks for the answers mate 
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1. Visual C++ is an Integrated Development Environment (IDE) for the C++ language. This means you can edit, compile, run and debug programs inside the Visual C++ system. The actual compiler is a separate command line program (at least in the version of VC++ I last used) but you don't deal with it directly.
2. Programming develops very slowly. You can buy a book originally published over 30 years ago and the concepts are still valid. However, programming tools and platforms change much quicker.
3. No. Where would you even find a working copy of MS-DOS and programming tools for it?
4. Split the problem into smaller parts.
5. No idea. 5-10 years? I wish I could predict 5-10 months ahead.
6. More likely you specialize to an application field (e.g. Web programming) and use a variety of languages. Learning programming is not about learning a programming language.
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Thanks alot for the answer. I know you dont use ms dos programs alot today, but you gotta start somewere.... in my book "c++ how to program. Introducing Object oriented design with the UML, 3rd edition" i start off making very simple programs in ms-dos. Am i able to make simple win32 apps when i cant make simple ms-dos apps?
Thanks again for the answer
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1- Visual C++ is microsoft version of C++, which is the same "base" language with additional libraries.
2- It depends on what you want to do, for standard C++, an older book will only show what were available in the language at that time, newer books will also feature additional topics ( templates, STL,... ); for specific books ( MFC for example ), the basics might still work, bu tthey will miss features.
3- I pretty much learned on unix, so, yes, I started to learn console type applications ( e.g. like ms-dos ).
4- bigger programs need good planning and design, not just a lot of programming. A Large program will usually consists of small functionnality that will "work" together, graphics, database, file operations, numerical computation, GUI, ... all with their own sub functionnalities.
5- depends on a lot of factors, I cannot answer that, check with local employement offices, maybe they have info on that.
6- Yes, a person who learns C++ can do all kind of programming, at first, but depending on his abilities and what he likes to do, or what his bos tells him to do, he will mostly concentrate on certain part of the application; for example, if you get hired by a game company to do database work for the game, you will not necessarilly learn game design (level plannig,...) or sound integration or graphic engine; and after that, when you will be looking for another job, you will have technical experience in DB, but not in other fields; but you should have experience of the "game domain" which can also be important.
As for education, opinions varies, me think that you should at least do a bachelor in computer science ( or related engineering fields ), lots of companies are looking for people with a minimum of education ( on paper ).
Maximilien Lincourt
Your Head A Splode - Strong Bad
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Thanks alot for the very explained answers!
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Maximilien wrote:
Yes, a person who learns C++ can do all kind of programming
I have heard it said that to a C++ programmer, the whole world looks like thumbs
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I'm trying to show a modal dialog (an about box) when the menu option is selected. I have the dialog organized under the ID tag IDD_ABOUTDLG. I do the prescribed procedure to add an MFC class, include the header, create a dialog, then do the DoModal() member. However, when I'm in the MFC Add Class Wizard, I fill out the information, base it off of CDialog. I name the class CAboutDlg (files are aptly named). When I click Finish, the window disappears but no files are created and I can't continue. I remember when I first tried to tinker with MFC, I ran into the same thing, posted the problem on Microsoft's appropriate newsgroup and an MVP responded saying that it's a known bug? Can anyone shed some light on this, how to fix the bug, or how to modify the project to put the data in place to support the dialog without going through the MFC wizard mentioned above?
Thanks in advance, and I appreciate all the help I've been getting, this program is coming along nicely. I think I nailed down reading in any size bitmap image for the manipulation I need on it.
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Create the dialog first.
Press Ctrl-W to bring up the wizard
You will be prompted to create a new class or connect the dialog to an existing one. (Create a new class)
Do what you need to
Close the wizard
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That's exactly what I did. I filled out the wizard box appropriately but it just doesn't create any files.
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No. I ended up creating an example dialog-based project and then copying that file over to my project, changing the filenames, class names and ID of the dialog it's going to use. It worked out pretty well too, I am amazed it worked. Typically things didn't go that easy for me when programming in MFC.
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I asked this question in the c# forum but was directed here instead:
How would I go about manipulating files at the kernel level for the purpose of hiding them? I am trying to incorporate file hiding into a project and I can't seem to find any information on the subject. It would work much like Folder Lock which: "locks files on kernel level, Windows Explorer and even real DOS Mode, Works on Windows 2003/XP/2000/NT/Me/98 and all kinds of disk types like FAT16, FAT32, NTFS." It doesn't have to work like this if there is another way, but this is the only info I have to work off of.
Here is a screen shot of the program folder and where the actual hidden files are located:
http://oxygine.com/Images/show.png
Can someone at least point me in the right direction?
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not much time to write:
www.rootkit.com
lots of sources there
of rootkits
a rootkit is a program that does what you want (amongst other things) and also they are usually at kernel level these rootkits. A hight-level rootkit=crappy rootkit
you will find more info about what rootkits are on the site and some sources in c
you will also require windows ddk for coding your own.
I have it and I'd give it to you but I have shitti net connection man and it is to bigf but you can give M$ 25 bucks and they will mail it to you.
that all I have time for now. I have some sources if you wanna and I could give them to you but not now.
k, bye!
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Hi All
I am Rajesh, from India. I am working on a project on windows device drivers
I am a beginner, I have a doubt, i hope you could solve my doubt.
I want to write a driver for a device which i am going to plug onto ISA slots.
my question is
1.How do i perform ISA bus address---> memory map
conversion ?
2. How do I map that address on to non-paged, physical
memory and then make it as a Port IO address.
3.Once it is done i want to perform Read/write/open/close .....
operations with that device.(ie I can access/read/write onto
the port.)
I kindly request you to help me out in this regard.
Thanks and Best Regards
Rajesh H,
Email : rajesh123_h@yahoo.co.in
Bangalore, Karnataka-state, INDIA
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You can find answers and more on: http://www.osronline.com/
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hi all,
I want to create User DSN Connection using MFC C++ Application ..
How do I do that..Normally we can create ODBC user DSN Connection manually using "Data Sources (ODBC)" in Control Panel\Administrative Tools...
So if any know to create ODBC DSNConnection using C++ to SQL Server database,
please reply me ..
Thanks in advance..
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SQLConfigDataSource()
suhredayan
There is no spoon.
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hi ,
I tried using above method..I want to create a DSN for SQL Server database..
I did like this:-
f(!SQLConfigDataSource(0,ODBC_ADD_DSN, "SQL Server\0",
"DSN=great\0"
"Description=great\0"
"Server=PUBUDU\0"
"Database=pubs\0"
"Uid=sa\0"
"Pwd=sa\0"
))AfxMessageBox("Not Created");
else AfxMessageBox("sucsefully created ");
But the answer is "Not created"..
Why can't I create DSN for SQL Server like this?
can you please tell me the problem here and the correct way to create DSN for SQL Server database?
Thanks in advance..
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