C / C++ / MFC

Reg. Error C2440 in visual studio 2008....

15-Jun-09 20:14

Use LoadLibrary and GetProcAddress.
GetProcAddress Function[^] can be used with ordinal numbers also.

This is an excerpt from MSDN

lpProcName [in]
The function or variable name, or the function's ordinal value. If this parameter is an ordinal value, it must be in the low-order word; the high-order word must be zero.

«_Superman_»
I love work. It gives me something to do between weekends.

Rakesh515-Jun-09 19:44

Rakesh5

15-Jun-09 19:44

Hi ,
when i tried to compile my project in visual studio 2008, i got the following error...

error C2440: '<function-style-cast>' : cannot convert from 'const CString' to 'ULONG_PTR' in atlcoll.h file.

Does anyone know how to solve this problem?

Thanks,

Rakesh.

Re: Reg. Error C2440 in visual studio 2008....

«_Superman_»15-Jun-09 19:51

Re: Reg. Error C2440 in visual studio 2008....

15-Jun-09 19:51

Which function are you calling?
Which line of your code is showing the error?

«_Superman_»
I love work. It gives me something to do between weekends.

Stuart Dootson15-Jun-09 22:05

Stuart Dootson

15-Jun-09 22:05

Show us the code that you're trying to compile -
I can think of so many things wrong with this scenario that seeing the code's the only real way to answer your question.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

PreTranslateMessage in ActiveX Control Class

Nishad S15-Jun-09 19:43

Nishad S

15-Jun-09 19:43

Hi,

There is a known issue related with the PreTranslateMessage in ActiveX controls. That is the PreTranslateMessage will not be called for child windows in the ActiveX control.

More details can be found in articles194294[^] and 187988[^].

The work around provided will work, ofcourse. But the PreTranslateMessage in the control class will not be called anyway. Anybody has faced such an issue?

Thanks for sharing your experience and solutions if any.

- ns ami -

Function Call in C++ (Newbie question)

Rajdeep.NET15-Jun-09 18:46

15-Jun-09 18:46

Hello friends,

I am new to this forum and this is my first question here. Actually, I am a .NET programmer. However, nowadays am a terrible fan of C++ since the language is machine+soft/hardware independent. I needed some help for function calling code, which I had written in C# and now am trying to convert it to C++ (note: Its not VC++, just C++, the code of which is compiled in Borland compiler or C-free and not Visual Studio)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        public void function01()
        {
            Console.WriteLine("Hi, I am function 01, now calling function 02"); // Prints message
            function02(); // calls function02
        }
        public void function02()
        {
            function01(); // calls function01
        }
        public static void Main()
        {
            Program p = new Program();
            p.function01();
        }
    }
}

Now, I need the C++ version of this. Can anybody in the forum please explain me the C++ code of this. I mean, implementing the function call concept in C++. I hope its aint that easy as is in the case of C#.

Hope to hear from you guys soon,
Happy Programming,
Rajdeep.NET Big Grin | :-D

Always ready to help (if possible, often I am a NooB!) and be helped!

«_Superman_»15-Jun-09 18:55

15-Jun-09 18:55

#include <stdio.h>

namespace ConsoleApplication1
{
  class Program
  {
  public:
    void function01()
    {
      printf("Hi, I am function 01, now calling function 02\n"); // Prints message
      function02(); // calls function02
    }

    void function02()
    {
      function01(); // calls function01
    }
  };
}

void main()
{
  ConsoleApplication1::Program p;
  p.function01();
}

The behavior would be exactly the same.
It will do function calls recursively and die with a stack overflow.

«_Superman_»
I love work. It gives me something to do between weekends.

Rajdeep.NET15-Jun-09 19:26

15-Jun-09 19:26

Hi Superman,

That was cool, thanks! Please wait while I vote your reply Smile | :)

However, is there some way to prevent the stack overflow funda? I hope implementing the ForLoop concept will help.

for (int i=0;i<=10;i--);

Will this overcome stack overflow? Note, that I have declared post decrement operators at the end of the loop. This shall continue execution on and on without any limitation. Will this crash the program? Sigh | :sigh:

Always ready to help (if possible, often I am a NooB!) and be helped!

«_Superman_»15-Jun-09 19:29

15-Jun-09 19:29

Please tell me the desired output.

The stack overflow occurs because you are called one function from the other endlessly.
function01 called function02 which calls function01 which calls function02 and soon.
There is no end to this.
And since function calls use stack space, it will go on till it runs out of it.

«_Superman_»
I love work. It gives me something to do between weekends.

Rajdeep.NET15-Jun-09 20:42

15-Jun-09 20:42

This is what I am trying to program

// Code in C#

public void function01()
try
{
if (File.Exists(@"C:\\file1.txt) // Checks if file1.txt exists
{
File.Delete(@"C:\\file1.txt");//If found, deletes file1.txt
}
catch{};

}
else
function02(); // calls function02
}
public void function02()
{
function01();// calls function01 in recursive way
}

Dear friend, as you can see here, that its all about recursion. Actually I am trying to create a program which will continuously check if a certain file exists in the specific location and if finds it, the program will delete that file. However, it will go on continuing this, which will block the user from creating any such file with the name as 'file1.txt'. I hope you got my point.

Please help,
Rajdeep.NET. Hmmm | :|

Always ready to help (if possible, often I am a NooB!) and be helped!

«_Superman_»15-Jun-09 22:31

15-Jun-09 22:31

You could do this.

function01()
{
  for ( ; ; )
  {
    //Do whatever file checking and deleting.
    function02();
  }
}

function02()
{
  // Do not call function01. Simply return.
}

If your requirement is to prevent the user from creating the file, I recommend you use the FindFirstChangeNotification[^], FindNextChangeNotification[^] and ReadDirectoryChangesW[^] APIs.

«_Superman_»
I love work. It gives me something to do between weekends.

Rajdeep.NET15-Jun-09 23:56

15-Jun-09 23:56

Hey Superman,

Thanks for your help men... Can you give me the code for copying the current executable to a desired location? Something like this:

When I execute the program, it should copy itself to a specific desination directory, like C:\\folder\\program.exe. I know that for this I have to get the path of the executable, but I cant code this in C++. Please help me friend.

Smile | :)

Always ready to help (if possible, often I am a NooB!) and be helped!

«_Superman_»16-Jun-09 0:00

16-Jun-09 0:00

Look at the GetModuleFileName Function[^] and CopyFile Function[^].

«_Superman_»
I love work. It gives me something to do between weekends.

OT: Rajdeep.Net

EliottA23-Jun-09 5:24

EliottA

23-Jun-09 5:24

Please review this users history as his past posts will show his intentions are malicious, he should not be given snippets of code that can help further his endeavor to potentially harm computers.

Again, I implore you to review his past posts, his intentions are clearly outlined and documented, at one point he even admitted and conceded to drop his questions of malicious intent, but it appears he switched from .net to C++.

Check out the CodeProject forum Guidelines[^]
The original soapbox 1.0 is back![^]

Re: OT: Rajdeep.Net

«_Superman_»23-Jun-09 16:17

23-Jun-09 16:17

Wow!!! That is some heavy stuff that happened back then.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: OT: Rajdeep.Net

Rajesh R Subramanian28-Jul-09 0:29

Rajesh R Subramanian

28-Jul-09 0:29

There's a new cretin in the house: http://www.codeproject.com/Messages/3137172/Re-How-to-access-a-remote-machine-from-a-local-machine-and-perform-basic-function-like-execute-and-close-the-remote-machines-application.aspx[^]

It is a crappy thing, but it's life -^ Carlo Pallini

Re: OT: Rajdeep.Net

ThatsAlok21-Jun-12 21:34

ThatsAlok

21-Jun-12 21:34

Great One Dude!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

David Crow16-Jun-09 2:57

David Crow

16-Jun-09 2:57

Rajdeep.NET wrote:
...I have to get the path of the executable, but I cant code this in C++.

Why not? Don't you have access to argv?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Problem running while and scanf

molesworth16-Jun-09 3:36

molesworth

16-Jun-09 3:36

If you read through the messages in this thread you'll get an idea of his level of knowledge...

There are three kinds of people in the world - those who can count and those who can't...

Denis J. González15-Jun-09 18:37

Denis J. González

15-Jun-09 18:37

Hi, I have a problem running this code, it doesn't do what it's supposed to do. Can anybody give me a hand? thanks

int main(){
    char answer='S';
    while (answer=='S'){
          printf("another?: ");
          scanf("%c",&answer);
          }
    return 0;
    }

Re: Problem running while and scanf

«_Superman_»15-Jun-09 19:04

Re: Problem running while and scanf

15-Jun-09 19:04

Denis J. González wrote:
it doesn't do what it's supposed to do

That depends on what you're trying to do.

And you haven't mentioned what the problem is.
All I can say now is that you might need an fflush(stdin) after the scanf

«_Superman_»
I love work. It gives me something to do between weekends.

Denis J. González15-Jun-09 19:08

Denis J. González

15-Jun-09 19:08

That did it! great! thanks!

what does fflush(stdin) do?

Re: Problem running while and scanf

«_Superman_»15-Jun-09 19:24