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Compiling error from stdafx.h [modified]

transoft15-May-09 10:18

15-May-09 10:18

Hi,

When I tried to compile my files, every file will generate following errors. After commenting the "#include "stdafx.h" out, these two errors will disappear. My "debug" version can compile. but the "release" version has following problems.

I used VS to create a new project. I got same errors. The debug version is OK. The release version can not be compiled.

1>C:\Program Files\Microsoft Visual Studio 8\VC\atlmfc\include\afx.inl(210) : error C2556: 'CFile *CArchive::GetFile(void) const' : overloaded function differs only by return type from 'CFile &CArchive::GetFile(void) const'
1> C:\Program Files\Microsoft Visual Studio 8\VC\atlmfc\include\afx.h(1628) : see declaration of 'CArchive::GetFile'
1>C:\Program Files\Microsoft Visual Studio 8\VC\atlmfc\include\afx.inl(210) : error C2372: 'CArchive::GetFile' : redefinition; different types of indirection
1> C:\Program Files\Microsoft Visual Studio 8\VC\atlmfc\include\afx.h(1628) : see declaration of 'CArchive::GetFile'

What is wrong?

Thanks,

modified on Friday, May 15, 2009 5:47 PM

Re: Compiling error from stdafx.h

Stuart Dootson15-May-09 13:01

Stuart Dootson

15-May-09 13:01

Sure the header file hasn't been edited somehow? Both my afx.h and afx.inl (from VS2008, not VS2005, but I can't see them changing) have CFile *CArchive::GetFile(void) const

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

Re: Compiling error from stdafx.h

transoft16-May-09 3:15

transoft

16-May-09 3:15

I used VS to create a new project and compiled the release version. I also got these error messages. I am trying to re-install VS.

Thanks,

Passing multidimensional arrays to functions

Royce Fickling15-May-09 9:45

Royce Fickling

15-May-09 9:45

Hi,

I am having a problem declaring and passing a multidimensional array of floats as an argument to a function. Can someone help me with this problem? My code is enclosed.

Any help appreciated.

            float* pData = new float[nNumRows,2];
    for( int i = 0; i < nNumRows;  i++ )
    {
        pData[i][0] = ((CSodSpecData*)pOdbSpecData)->m_cvData[i].Real();
        pData[i][1] = ((CSodSpecData*)pOdbSpecData)->m_cvData[i].Imag();
    }

    lErrorCode = pService->serviceNotifyDataEventSet( pData[0], strSensorName );

// The function to store the data
CDFstatus CABCDEntryPointService::serviceNotifyDataEventSet(float* dataSet, const CString& varName)

Re: Passing multidimensional arrays to functions

led mike15-May-09 10:19

led mike

15-May-09 10:19

Royce Fickling wrote:
I am having a problem declaring and passing a multidimensional array of floats

Without knowing what that method requires at the address sent as the first parameter all I can offer is this will compile. No way to know if is correct.

pService->serviceNotifyDataEventSet( pData, strSensorName );

or

pService->serviceNotifyDataEventSet( &pData[0], strSensorName );

Re: Passing multidimensional arrays to functions

David Crow15-May-09 10:23

David Crow

15-May-09 10:23

Royce Fickling wrote:
float* pData = new float[nNumRows,2];

Should this be:

float pData = new float[nNumRows][2];

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Wide char vs. ANSI char

transoft15-May-09 7:32

transoft

15-May-09 7:32

Hi
I want to add wide char support to my software. If I do this, I will need to change a lot of code. If the software is changed to wide char, does this wide char software can handle ANSI char as it used to be?

Is there any advice or good experience?

Thanks,

Re: Wide char vs. ANSI char

CPallini15-May-09 7:49

CPallini

15-May-09 7:49

See [^].

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: Wide char vs. ANSI char

Rajesh R Subramanian16-May-09 0:20

Rajesh R Subramanian

16-May-09 0:20

I am not sure what do you mean by "handle" ANSI char. Note that everything is represented as Unicode, in an application that is built for Unicode. There is a two part article at CP, that you might want to read:
The Complete Guide to C++ Strings, Part I - Win32 Character Encodings[^]
The Complete Guide to C++ Strings, Part II - String Wrapper Classes[^]

Also, if you write an application in ANSI, Windows will still have to convert everything to Unicode internally to work with it. So, theoretically your application must be faster if it is built for Unicode.

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

Re: Wide char vs. ANSI char

Joe Woodbury16-May-09 17:55

Joe Woodbury

16-May-09 17:55

Rajesh R Subramanian wrote:
Note that everything is represented as Unicode, in an application that is built for Unicode.

Not at all true.

"Hello World" is an ANSI string, even in a application build with UNICODE libraries.
L"Hello World" is the UNICODE string in either environment.
_T("Hello World") varies.

Even the underlying API has both Wide and Ansi versions. Sometimes the strings in these are converted. Other times they are not.

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

Re: Wide char vs. ANSI char [modified]

Rajesh R Subramanian16-May-09 19:17

Rajesh R Subramanian

16-May-09 19:17

Joe Woodbury wrote:
"Hello World" is an ANSI string, even in a application build with UNICODE libraries.
L"Hello World" is the UNICODE string in either environment.

I wouldn't expect anyone reasonable to define strings like this, unless for a debate. My point was that he should not be including ANSI stuff into an Unicode application (why not Unicode?), as that might bring down the performance.

I assume the usage of generic text mapping routines and I could have specified it clearly. Does my comment make sense if string literals enclosed within the TEXT macro?

Rajesh R Subramanian wrote:

Also, if you write an application in ANSI, Windows will still have to convert everything to Unicode internally to work with it. So, theoretically your application must be faster if it is built for Unicode.

Joe Woodbury wrote:
Even the underlying API has both Wide and Ansi versions. Sometimes the strings in these are converted. Other times they are not.

It wasn't clear enough that I told "Windows" and not APIs? An API may have both versions, but when it has to pass on a string to Windows, it must be converted to Unicode. Even if a function returns an ANSI string, again, Windows actually returns a Unicode string and there happens another conversion which is not visible to the user calling the API and essentially the performance goes down.

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

modified on Sunday, May 17, 2009 2:40 AM

Curious COM question - the case of the second exe server...

Jim Crafton15-May-09 5:51

Jim Crafton

15-May-09 5:51

I have a COM ATL based exe server that supposed to to be a single instance. It generally runs as a windows service. However when I debug it ti doesn't act the way I'd expect. I start it in the debugger. I then have a php script that gets executed by the apache webserver. This php script creates a COM object that is vended out by my COM server. However instead of using the instance of the server that I have running, a new instance is started up, in what appears to be the System account. Is this some weird permissions rule, that because the script is being executed by a process running as a service, that COM creates a second exe server instance in the same security context? Is there way around this? Or is there something blindingly obvious that I'm missing?

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0 rows returned
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Re: Curious COM question - the case of the second exe server...

Nemanja Trifunovic15-May-09 7:37

Nemanja Trifunovic

15-May-09 7:37

Yes, out of process COM communication is basically permitted only if both sides run in the same security level (if I get it correctly Smile | :)

)

Anyway, here is a workaround[^] according to the COM people at MS.

Programming Blog

utf8-cpp

Re: Curious COM question - the case of the second exe server...

CPallini15-May-09 7:49

CPallini

15-May-09 7:49

Nemanja Trifunovic wrote:
according to the COM people

Re: Curious COM question - the case of the second exe server...

Jim Crafton15-May-09 8:02

Jim Crafton

15-May-09 8:02

Who are now kept in a small room with no windows and fed corn syrup and creamed spinach. Once a day they are allowed to hold hands and sing "Won't you be my IMoniker?"

¡El diablo está en mis pantalones! ¡Mire, mire!
SELECT * FROM User WHERE Clue > 0
0 rows returned
Save an Orange - Use the VCF!
Personal 3D projects
Just Say No to Web 2 Point Oh

Re: Curious COM question - the case of the second exe server...

CPallini15-May-09 11:48

CPallini

15-May-09 11:48

Jim Crafton wrote:
with no windows

Jim Crafton wrote:
Once a day they are allowed to hold hands and sing "Won't you be my IMoniker?"

While proud, progressive, managed people are diffusing the new verb of interperabilty.
Smile | :)

Re: Curious COM question - the case of the second exe server...

Rajesh R Subramanian16-May-09 1:50

Rajesh R Subramanian

16-May-09 1:50

CPallini wrote:
interperabilty

Italish, Carlo? Smile | :)

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

Re: Curious COM question - the case of the second exe server...

CPallini16-May-09 2:06

CPallini

16-May-09 2:06

Actually a typo (of a poor Italiansh guy... Big Grin | :-D

Re: Curious COM question - the case of the second exe server...

Jim Crafton15-May-09 7:55

Jim Crafton

15-May-09 7:55

Thanks, that's a great link. It does have the unfortunate side effect of making me want to jab a fork in my eye. What a frigging mess Frown | :(

¡El diablo está en mis pantalones! ¡Mire, mire!
SELECT * FROM User WHERE Clue > 0
0 rows returned
Save an Orange - Use the VCF!
Personal 3D projects
Just Say No to Web 2 Point Oh

Re: Curious COM question - the case of the second exe server...

Rajesh R Subramanian15-May-09 23:23

Rajesh R Subramanian

15-May-09 23:23

Jim Crafton wrote:
Thanks, that's a great link. It does have the unfortunate side effect of making me want to jab a fork in my eye.

Pretty normal while working with COM if you ask me.

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

Mohammadj15-May-09 5:28

Mohammadj

15-May-09 5:28

hi
I made this
http://www.4shared.com/file/105379147/23d04050/dualactionmfcbutton.html[^]

it did not work as dual function button

But it work well as dual hover and dual tooltips

Can anyone help me in making it dual function button?!
THanks

Re: hi

David Crow15-May-09 7:04

David Crow

15-May-09 7:04

Mohammadj wrote:
Can anyone help me in making it dual function button?!

Probably, but you'll need to post your code snippets here (i.e., only relevant code), rather than require someone to download your whole project from some other site. Some of us have soap operas to watch and Bonbons to eat so time is important.

Welcome again!

CPallini15-May-09 7:28

CPallini

15-May-09 7:28

Welcome to...
Well, you already know [^].
Big Grin | :-D

Re: hi

Mohammadj15-May-09 9:04

Mohammadj

15-May-09 9:04

Here is the code snippet i wrote when the custom button clicked

void CHashiDlg::On_AddSubtract_action()
{

UpdateData( );
double numA ,numB ,result ;
numA = atof(m_num1) ;// edit control number1
numB = atof(m_num2) ;// edit control number2

if(m_two_actions_botn.OnRight()) { // check whether the mouse clicked right half

m_results = numA + numB ;

UpdateData(FALSE );

}
else {
m_results = numA - numB ;

UpdateData(FALSE );

}

UpdateData(FALSE );
}
it performs no action loll

Re: hi

David Crow15-May-09 9:15

David Crow

15-May-09 9:15

The first thing I'd do is get rid of those unnecessary UpdateData() calls. They are a never-ending source of problems simply because most folks do not know how to use them.

You should then have something akin to:

void CHashiDlg::On_AddSubtract_action() 
{
    CString strNumA;
            strNumB,
            strResult;
 
    m_num1.GetWindowText(strNumA);
    m_num2.GetWindowText(strNumB);
 
    double numA = atof(strNumA),
           numB = atof(strNumB);
 
    // check whether the mouse clicked right half
    if (m_two_actions_botn.OnRight())
        strResult.Format("%f", numA + numB);
    else
        strResult.Format("%f", numA - numB);
        
    m_results.SetWindowText(strResult);
}

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