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Thanks, it's clear enough. But I don't really understand what you meaned "out of scope". So when object of CDialog is totally destroyed (not its "window")?
Thanks for reading!
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"out of scope" ... basic C/C++ concept.
when you declare a variable on the stack in a function ( or withing {...} the variable is deallocated and "destroyed" when the it leaves the current scope ( either the end of the function or the matching }.
for example (on the stack):
void SomeClass::SomeFunction()
{
AnotherClass myClass;
}
on the heap :
void SomeClass::AnotherFunction()
{
AnotherClass* pMyClass = NULL;
pMyClass = new AnotherClass;
delete pMyClass;
}
So to answer you question, the CDialog object will be destructed at the end of the function.
void SomeClass::YetAnotherFunction()
{
CDialog dlg;
dlg.DoModal();
}
or
void SomeClass::YetAnotherFunction2()
{
CDialog* pDlg;
pDlg = new CDialog;
pDlg->Create( );
pDlg->ShowWindow(SW_SHOW);
delete pDlg;
}
Maximilien Lincourt
Your Head A Splode - Strong Bad
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WIN Management WMI Service (64 bit env on IA-64) doesn't seem to load 32 bit dlls (don't know why).
We have confirmed this by removing load call for 32 bit dll, after removing this call, it works fine.
Need to find some solution as we can not have 64 bit version of that dll. Or do we have to some setting
to load it.
Please let us know if anyone has any idea
Thanks and Regards
Deepak
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did you try using the dll help loader?..
Sovled my beta issue.
"Naked we come and bruised we go."
- James Douglas Morrison
Best Wishes,
ez_way
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Do not know about it, What is that, please elaborate
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When I load a 16 on the 64 I use
HINSTANCE hLiba = LoadLibrary( "dbghelp.dll" );
before loading.
Best Wishes and write anytime,
Marty
Ps. This helps with the no insertsion point in early dll's.
Pls. remem to check load with hLiba.
I got this from an article by Zifrim at cg.
Also Dr. N did some work with 16 ast http://flounder.com/
"Naked we come and bruised we go."
- James Douglas Morrison
Best Wishes,
ez_way
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Hello,
Yes, it is so, but there is a reserved area for such as this. Thunking is the problem. By default, 64-bit applications can use 8 TB of user mode address space.
As you know 16's and 32 will work fine as long as they are loaded under the 2GB level and a pointer is set to the same. Please think about the 16 and 32 bit thunker and look at it's doc's at m$. Notice that the thunker can only address x amount of memory as no one ever thought we would have more than a few megs. But, just because your system does not have more than 2 gigs mem-ram does not let you off the hook 8^}.
Please remember data is data, is data. just as you may load a text file into memory, you may load another resource into memory, right? You could open a dll in bin mode and read it yes?
Now come the problem of an insertion point, well the best I can explain this is search for it in your favorite bin editor. Next grab the offset and you golden.
Your must load absolutly, and create a pointer to the dll's and the offset, just as you would a thread to another exe or resource....that get's you the dll set to open, next in the dll header make a friend to the dll. Ole'(I name the dll something else, but that is another issue, see the idea thought?)
I have loaded 16's using this method and dllhelp. Now comes the problem of addressing the values in memory.Do not use the thunker. use your new pointer.
Write the data to the disk, and next go to M$ Please read and download the thunker compiler from M$ http://msdn.microsoft.com/library/default.asp?url=/library/en-us/win9x/tc_1582.asp
OK, a thunker compiler take a simple script that uses the reserved words below.
Now create a thunker that loads the newly formed file with the help of dllhelper.
Doh!, DO NOT DOWNLOAD A Thunker from the net as many are trojan's, go to M$
Keyword Meaning
enablemapdirect1632=true; Specifies a 16-bit to 32-bit thunk.
enablemapdirect3216=true; Specifies a 32-bit to 16-bit thunk.
input The parameter is used for input only; it is translated when the function is called.
output The parameter is used for output only; it is translated when the function returns.
inout The parameter is used for input and output; it is translated when the function is called and when it returns.
faulterrorcode Specifies the error code when a 16-bit to 32-bit thunk fails because the 32-bit DLL cannot load or initialize. This value is returned when the application calls the first thunk. For more information, see Late Loading.
preload32 Forces the 32-bit thunk DLL to load when the 16-bit thunk DLL is loaded in a 16-bit to 32-bit thunk.
preload16 Not used. Late loading of a 16-bit DLL in a 32-bit to 16-bit thunk is not supported.
win31compat Defers unloading a 32-bit thunk DLL until the process terminates. For more information, see Compatibility with Existing 16-bit DLLs.
You must ship the new thunk with your product.
M$ says: "Compatibility with Existing 16-Bit DLLs
There are certain steps you must take to ensure compatibility with existing 16-bit DLLs. Using the win31compat statement in the thunk script causes the unloading of a 32-bit DLL to be deferred until the containing process terminates. Use this statement to ensure that interprocess loading and freeing procedures, which may have worked with the 16-bit DLL when it was called from 16-bit code, will not cause the 32-bit thunk DLL to be freed prematurely. It also allows the 16-bit library to be freed without execution of the 32-bit DLL's notification routine an occurrence that could cause reentry into 16-bit code.
You must use the win31compat statement if a 16-bit DLL replaces a DLL that is currently used in a Windows version 3.1 environment or if the DLL runs as part of a graphics device interface (GDI) device driver. You might need use this statement even if your 16-bit DLL does not fit into one of these categories, because it provides extra protection from other DLLs that might be used by your thunk DLL."
The college where I teach part time has a very old accounting package that will only run on 3.1. I used this method to load the dll's and create new dll's from the old. Thanks M$ for another unlubed screw..g! Thunking is easy, entry points are tuff!
I will try to hack out an example over the winter and post an article.
This is bound to be a longhorn issue as M$ intends to stuff the box so full of mem-ram that it will be un-nesessary to write efficient code. (i.e. longhorn Noun: a stupid breed of cattle that are ofthen killed by lightning while standing under trees in thunder showers)).
"Naked we come and bruised we go."
- James Douglas Morrison
Best Wishes,
ez_way
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1. We have our own perfomance monitor object which works OK Windows 2000 32-bit, but does not work OK 32-bit Windows 2003 for Counter Logs, but System monitor is working OK on all platforms.
******Log**************
(PDH-CSV 4.0) (India Standard Time)(-330) \\CANON\XXXX(000000 G \Avg. Disk Bytes/Transfer
11/19/2004 11:18:26.312
11/19/2004 11:18:27.296
11/19/2004 11:18:28.296
11/19/2004 11:18:29.296
11/19/2004 11:18:30.296
11/19/2004 11:18:31.296
11/19/2004 11:18:32.312
11/19/2004 11:18:33.296
11/19/2004 11:18:34.296
2. Also, If we are selecting all instances and all counters under Counter log, all instances are not comming
on Windows 2003 but working on Windows 2000.
This is just the main code extract on how are are doing, we have done no changes to the code for
different plaforms.
********************** Code Extract*******
IEnumWbemClassObject l_penumerator;
IWbemServices* l_services;
ULONG l_uljunk;
DWORD NUM_INSTANCES = 0;
IWbemClassObject** l_ppcop = NULL;
..
..
l_Hr = l_services->CreateInstanceEnum(bs,WBEM_FLAG_SHALLOW |
WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &l_penumerator);
..
..
..
l_Hr = l_penumerator->Next(INFINITE, 1, &l_ppcop[NUM_INSTANCES], &l_uljunk);
/* PROBLEM: In Win2003, it is breaking on the very first time.
but in Win 2K, it is enumerating properly */
if(l_Hr == WBEM_S_FALSE){
break;
}
********************** Code Extract*******
If we are not use WMI objects, it seems to be OK, please suggest what could be wrong with WMI.
Also, if there are sample code working using WMI on Windows 2003, please send it to me. Any help on this would be great
Thanks and Regards
Deepak
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Need this urgently, someone has any idea on it
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anyone know anything about authentificated smtp, I need to make a program that can connect to such a smtp server and it needs to support smtp authentification
I read the RFC but I didn't understand a thing
SO can anyone help me, tell me how I can log in to one of these serverswith username and password I assume that the rest is similar to sending mail via smtp withouth authentification.
thank you in advance
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ASMTP and Apop are really startinf to catch on, well here is how I started with authentication:
apop http://www.codeproject.com/internet/win32_pop3.asp
smtpa
I looked at the new linux smtpa module "sendmail" which has smtpa included.
It is in c++ it is an easy port over.
"Naked we come and bruised we go."
- James Douglas Morrison
Best Wishes,
ez_way
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I need a C++ program which performs the following Binary Tree operations
1. Create Tree
2. Insert a node into tree
3. Traversal of tree (Inorder, Preorder and Postorder)
4. Deletion of a node from tree
I have the code for Binary Search Tree, but what I need is Binary Tree especially the tree creation part.
Can someone help me?
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What context are you using the binary tree in? Is it STL or raw C++?
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I have two simple CEdit for recevie input and display output.
1. In the output I can't use \n for new line,what the instruction for take new line?
2. In the input I need to receive the enter key but I can't.
Please tell the way to solve two problem.
Thank you
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1. Try \r\n
2. There should be a property for CEdit called "Want Return" or "Want Enter" that you can set in the dialog editor that will enable multiline.
 Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!
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Hi,
In the styles page of Edit Ctrl enable multiline and use "\r\n"
Sujan
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\r\n so work!!!
Thank you.
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Has anybody herad about Reverse Engenieering Software?I know that there are programs that hep you to view the source code of an exe.I'm interested in learning and not in stealig source code.I have searched Google but i did't find anything interesting.Can anyone help me?Thanks a lot.
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Disassemblers are used to show the machinecode of any programmers language. This machinecode is called Assembler, or short: ASM.
Debuggers are used to trace the whole code at runtime. I think you know that from VC++ debugger. But the difference to other debuggers is: You trace, again, machincode, so ASM.
Good debuggers: OllyDbg, Sice (softice)
Good Disassembler: IDA, w32Dasm
DKT
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Not all disassemblers go directly to ASM ...
I have used several in the past that disassemble to C, C++, and even VB (back when VB was interperted) ...
While it is true that most will only output to ASM, others do exist (although reading the code is still difficult when all of the variables and methods are genericly renamed to things like fun003 and var001)
qcha0s
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Before I start, what is your goal? In most cases there are better ways to achive your goals than reverse engineering.
If you want to become a better programer, reverse engineering isn't the best way to start. (a little is good, but after you have an idea of what you are doing there are better ways improve)
If you want to know how a program works, you will learn best by getting books on the topic, and then writing a clone of it. (check open source for clones that you can read the commented soruce code, then contribute to them)
If you want to make your program compatable with some file or network protocol, then you start with very simple, and slowly add complexity while watching what changes. Start by saving an empty document. Then add a single letter and see how the file changes. So on until you understand it.
If you want to write a virus checker, or just have fun, then read on.
That covered, onto reverse engineering
Basicly it is detective work. You guess what is going on, then figure out how to check your guess.
I have not found programs to view source code very useful, too often code and data is messed up, and then the output is meaningless. I've always found a good book showing all the instructions the CPU supports, in hex, useful.
One of the more useful tools is to trace the system calls the program makes. For unix systems see truss . For Windows system install linux + wine, which has a good debugger.
In the end though it is detective work. Your success mostly depends on your willingness to spend a lot of time getting down and dirty with the code, watching what is going on.
I find that reverse engineering works best in small groups. There are often too many details for one person to keep track of, and it helps to bounce ideas off other people around you. So try not to do it alone.
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Two points:
1. It often makes sense to analyze your app. For example, it can be used to optimize your code. You often see stupid behaviours of the compilers. I once saw a command by a delphi compiler: add ebx, 0
Hey wow, that is usefull...
2. Why not a one man show? I always do the work alone. And I analyzed alot hard algos. For me its just fun. Nothing more, but for others it may be usefull.
DKT
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I want to know how NetSnippets was done ( netsnippets.com).
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