C / C++ / MFC

12-Mar-10 6:55

Hello.

I have simple console application written in c++ and compiled on my computer running Windows 7. The exe is working as wanted on my mashine but not in the same way on another computer running Windows 7?

Why does that happen? Is it because Visual Studio installs additional components in my computer which the other PC do not have?

Thanks

LunaticFringe12-Mar-10 7:33

LunaticFringe

12-Mar-10 7:33

corrosion190 wrote:
Why does that happen? Is it because Visual Studio installs additional components in my computer which the other PC do not have?

Probably. Depending on your project settings, you may or may not need to install VC++ runtime dll's on the target machine. In particular, if your project uses MFC, project settings specifying 'Use MFC in a Shared DLL' means that the MFC runtime will be needed. (Of course, your program may require other system dll's to be specifically linked, as well; it all depends on what you're doing. In general, though, for simple programs, it's the MFC dependency that trips people up.)

The simplest way to reduce the number of dependencies is to compile with 'Use MFC in a Static Library'; this will remove the MFC requirement. To get a complete picture of your project's requirements, download the Dependency Walker[^].

For more info, see this[^]. Note in particular the section on 'Understanding dependencies'.

L u n a t i c F r i n g e

corrosion19012-Mar-10 8:22

12-Mar-10 8:22

I tried compiling with "Use MFC in a Static Library" and I got those errors:

Cpp error LNK2019: unresolved external symbol __imp__ShowWindow
Cpp error LNK2019: unresolved external symbol __imp__GetWindowTextA
Cpp error LNK2019: unresolved external symbol __imp__GetWindowTextLengthA
Cpp error LNK2019: unresolved external symbol __imp__GetForegroundWindow
Cpp error LNK2019: unresolved external symbol __imp__GetAsyncKeyState
Cpp error LNK2019: unresolved external symbol __imp__GetKeyState
Cpp fatal error LNK1120: 6 unresolved externals
Cpp warning LNK4199: /DELAYLOAD:OleAcc.dll ignored; no imports found from OleAcc.dll
Cpp warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification

The same result with "Use MFC in a Shared DLL"..
When I try with Use Standard Windows Libraries I get only one warning: LINK : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification

LunaticFringe12-Mar-10 8:44

LunaticFringe

12-Mar-10 8:44

Then it's probably not an MFC project.

Wink | ;)

Download the Dependency Walker and use it to determine what dll's your app is looking for.

[edit]
Although, after re-reading your initial post, I see I've been acting on the assumption that the issue was dependency related, but you didn't really say that. All you said was that your app wasn't 'working in the same way' on a different machine.

So, what exactly do you mean by not 'working in the same way'?
[/edit]

L u n a t i c F r i n g e

corrosion19012-Mar-10 9:04

Re: C++ console application problem on Windows 7 [modified]

12-Mar-10 9:04

It's a Keylogger and cannot capture all the keys on the target machine. If I run in in XP compatibility mode it is able to get all key strokes but every time the application starts asks for permission to make changes to the computer.

In normal mode (not XP compatibility) starts with no errors, creates the log file and starts flushing to it but not all of the data it is supposed to.

LunaticFringe12-Mar-10 9:28

LunaticFringe

12-Mar-10 9:28

Oh! Yeah, that's probably not a dependency problem!

Big Grin | :-D

It doesn't sound so much as a deployment issue as, perhaps, a UAC/permissions issue. I think for anyone to help you with this, you're going to have to provide more detailed information as to the specific nature of the failure. I've never tried to develop a key logger, but I imagine someone here has.

[edit]
Is there a difference in the user account type you're working with on the target machine? For instance, are you working with an admin account on your dev machine, but with a standard user account on the target machine? Someting like that may contribute to your trouble, if it is indeed UAC/permissions related.
[/edit]

L u n a t i c F r i n g e

modified on Friday, March 12, 2010 3:36 PM

corrosion19012-Mar-10 9:36

interpolation subroutine c++

12-Mar-10 9:36

Thanks for the help.
When I'm home alone again with the target PC I'll check if it has the same dll-s as mine. Cool | :cool:

mrby12312-Mar-10 6:53

mrby123

12-Mar-10 6:53

Hi Guru,

I am looking for good subroutines for interpolation a tabulate function (y[i], x[i])-> y=f(x);

Also I need a subroutine for interpolation: (x[i],y[i],z[i]) -> z = F (x,y)

Thank for share your knowledge and work.

Re: interpolation subroutine c++

Alan Balkany16-Mar-10 3:56

Alan Balkany

16-Mar-10 3:56

http://en.wikipedia.org/wiki/Spline_interpolation#Cubic_spline_interpolation[^]

Exchange SOAP Contacts Sync

Alexander ^M.,12-Mar-10 5:19

Alexander ^M.,

12-Mar-10 5:19

Hello everyone,

I'm syncing contacts via SOAP to a Microsoft Exchange Server 2007.

Now the Problem is: The Data transmitted is correct (and correctly displayed in Outlook Web Access), but when I connect Outlook (only tested 2007) it doesn't show a name a display name in the address book list (only email address etc.). So when I select the contact to send him/her a mail, only a ; is put inside the address field, which is bad... But when I open the contact details, everything is there. And if I change something (e.g. add a dot after the name or so) and save, then the name and display name are displayed correctly in the address book.

This is very weird..

I'd appreciate any hints on what could cause that issue.

Don't try it, just do it! Wink | ;-)

Re: Exchange SOAP Contacts Sync

Richard MacCutchan12-Mar-10 22:07

Richard MacCutchan

12-Mar-10 22:07

Alexander <su wrote:<="" div="">This is very weird..

Yes, it certainly has nothing to do with C++.

txtspeak is the realm of 9 year old children, not developers. Christian Graus

Allocation of (**)[2] [Solved]

xuxiuxun12-Mar-10 4:17

12-Mar-10 4:17

Hi, I am working on a project involving some 2D coordinates. When it comes to allocating a number of 2D coordinates, I code like this:

float (*coords)[2] = new float[num][2]; // num: Number of 2D coordinates, variable of type int

However, I do not know how to allocate an array of 2D coordinates? That is,

float (**coords)[2]; // I want to have it as [row][col][2], row & col: variable of type int

Am I declaring it correct? I know I can use float*** with the last layer's dimension as 2, but I just want to know if anyone is using this method. Thanks.

modified on Sunday, March 14, 2010 1:57 AM

Eugen Podsypalnikov12-Mar-10 4:32

Eugen Podsypalnikov

12-Mar-10 4:32

It could be implemented as following too Smile | :)

class CFPoint
{
  float m_fX;
  float m_fY;
public:
  ...
};
 
{
  CFPoints* pcFPoints = new CFPoint[num];
}

virtual void BeHappy() = 0;

image processing toolkits | batch image processing

C^hris L^osinger12-Mar-10 4:32

C^hris L^osinger

12-Mar-10 4:32

there are many ways to do something like this.

the cleanest is to use a struct to hold your coordinate pairs:

struct floatPoint
{
  float x;
  float y;
};

floatPair * coords = new floatPair[num];

...

delete [] floatPair;

the safest is to use an STL container to hold the points:

#include < vector >
struct floatPoint
{
  float x;
  float y;
};

std::vector < floatPair > coords(num);

allocating a single buffer:

float *pBuffer = new [num * 2];

int x = 3;
int y = 2;
float fxy = pBuffer[y * 2 + x];

...

delete [] pBuffer;

etc.

xuxiuxun12-Mar-10 15:41

12-Mar-10 15:41

Thanks for your reply, Eugen and Chris.
The situation is that I need to put the data inside the functions provided by a library. The prototypes are like this:

<br />
int Output1(float out1[][2]);<br />
int Output2(float out1[][2], float out2[][2]);<br />
int Output3(float out1[][2], float out2[][2], float out3[][2]);<br />
// And so on to Output4(), Output5(), etc., still expanding<br />

According to different cases, I need to call one of these functions in each process. I think it implies that the row and column are varying. How I want to call them is like this:

<br />
float (**coords)[2];<br />
<br />
// After allocation according to different cases,<br />
Output1(coords[0]); // Or,<br />
Output2(coords[0], coords[1]); // and so on...<br />

I have searched on the web and found something like this (what I planned to do if (**)[2] does not work):

<br />
float ***coords;<br />
<br />
// After allocation according to different cases,<br />
Output1((float(*)[2])coords[0]); // Or,<br />
Output2((float(*)[2])coords[0], (float(*)[2])coords[1]); // and so on...<br />

Richard MacCutchan12-Mar-10 22:06

Richard MacCutchan

12-Mar-10 22:06

In all of the above you do not seem to be allocating any space for your arrays. The first requirement is to know how many rows are required by the functions OutputX. For example you have the prototype:

int Output1(float out1[][2]);

which means that Output1 takes the address of a two-dimensional array, with some number of rows each of two columns. Assuming it requires 20 rows you could allocate the array thus:

float out1[20][2];
int i = Output1(out1);

However, without knowing more details of the above functions it is difficult to be more specific.

txtspeak is the realm of 9 year old children, not developers. Christian Graus

xuxiuxun13-Mar-10 0:27

13-Mar-10 0:27

Maybe my previous description is not specific enough. Hope the code below explain more clearly.

int row0 = 0, col0 = 0;
float ***coords;
int Output1(out1[10][2]);
int Output2(out1[20][2], out2[20][2]);
int Output3(out1[30][2], out2[30][2], out3[30][2]);
int Output4(out1[40][2], out2[40][2], out3[40][2], out4[40][2]);

void Function(const int nMode)
{
     int row, col;

     switch (nMode)
     {
     case 0: row = 1; col = 10; break;
     case 1: row = 2; col = 20; break;
     case 2: row = 3; col = 30; break;
     case 3: row = 4; col = 40; break;
     }

     if (row0 != row || col0 != col)
     {
          coords = new float**[row];
          for (int i = 0; i < row; i++) {
               coords[i] = new float*[col];
               for (int j = 0; j < col; j++)
                    coords[i][j] = new float[2];   }
          row0 = row; col0 = col;
     }

     switch (nMode)
     {
     case 0: Output1(coords[0]);                                  break;
     case 1: Output2(coords[0], coords[1]);                       break;
     case 2: Output3(coords[0], coords[1], coords[2]);            break;
     case 3: Output4(coords[0], coords[1], coords[2], coords[3]); break;
     }

     // ... Other code goes on. Before quitting the program, coords will be deleted according to its dimensions.
}

So in this way, I do not need to declare a bunch of static arrays like:

float out1[10][2];
float out2[2][20][2];
float out3[3][30][2];
float out4[4][40][2];

And some of them may even not to be used throughout the process (if nMode sticks to a certain choice by user). Thus I think dynamic allocation will be more efficient. (Although the allocation and deallocation may cost some effort.)

Going back to original subject, my question is "Is it possible that I can use float (**)[2] instead of float***, since the dimension of the last layer is always 2?"

Thanks.

Richard MacCutchan13-Mar-10 10:07

Richard MacCutchan

13-Mar-10 10:07

I think my previous suggestion was maybe closer to what you want. You seem to be introducing complexity where it is not needed, and I think your allocation of the array contents is incorrect. I must confess that I am having difficulty following the above logic, and still do not quite understand what you are trying to achieve.

txtspeak is the realm of 9 year old children, not developers. Christian Graus

xuxiuxun13-Mar-10 19:49

13-Mar-10 19:49

Nevermind. I actually implemented the code above in my project and everything seems working, without memory leak, crash or data problem. I will go deeper to inspect too. Thanks for your reply.

Message Removed

12-Mar-10 4:00

12-Mar-10 4:00

Message Removed

image processing toolkits | batch image processing

C^hris L^osinger12-Mar-10 4:14

C^hris L^osinger

12-Mar-10 4:14

did you have a question?

xuxiuxun12-Mar-10 4:25