C / C++ / MFC Discussion Boards

Sameer Naik20-Jun-08 4:45

20-Jun-08 4:45

hi programmos,

in my application, i am trying to edit the boot.ini file.
so heres what i tried so far,

i created a new file named "boot.new" with all the required changes, then used MoveFileEx() to replace existing "boot.ini" with the "boot.new", but MoveFileEx returns with error.

So i tried to edit the boot.ini file directly. but if i try open boot.ini in write mode, it now fails to open the file in the write mode.

i also thought of using "bootcfg" command line utility, but then unfortunately windows xp home edition does not include this utility.

i was wondering if theres a way to edit the boot.ini file from visual c++ (programatically), in other words IM STUCK and it really SUCKS to be where im right now.

please help.

regards
~sameer (googling...)

Re: Editing boot.ini programatically

Randor 20-Jun-08 5:07

Randor

20-Jun-08 5:07

It would be easier to form a response if you posted the results of the call to GetLastError().[^]

With that being said I will attempt to make a non-educated guess at what the problem could be. Perhaps the file is read-only in which case the following code may help.

/*
#define FILE_ATTRIBUTE_READONLY         0x00000001
#define FILE_ATTRIBUTE_HIDDEN           0x00000002
#define FILE_ATTRIBUTE_SYSTEM           0x00000004
#define FILE_ATTRIBUTE_DIRECTORY        0x00000010
#define FILE_ATTRIBUTE_ARCHIVE          0x00000020
#define FILE_ATTRIBUTE_NORMAL           0x00000080
#define FILE_ATTRIBUTE_TEMPORARY        0x00000100
#define FILE_ATTRIBUTE_COMPRESSED       0x00000800
#define FILE_ATTRIBUTE_OFFLINE          0x00001000
*/

DWORD dwResult = GetFileAttributes(szFullPath);
if(INVALID_FILE_ATTRIBUTES != dwResult)
{
	TRACE1(_T("Overwriting file: %s\n"),szFullPath);
	if(dwResult & FILE_ATTRIBUTE_READONLY)
	{
		BOOL bSuccess = SetFileAttributes(szFullPath,dwResult & ~FILE_ATTRIBUTE_READONLY);
	}
}

Re: Editing boot.ini programatically [modified]

Saurabh.Garg20-Jun-08 5:10

Saurabh.Garg

20-Jun-08 5:10

You are having all these problems because boot.ini is readonly file!

-Saurabh

modified on Saturday, June 21, 2008 5:05 AM

Re: Editing boot.ini programatically

Sameer Naik20-Jun-08 19:41

Sameer Naik

20-Jun-08 19:41

Thanks a bunch...
it indeed was a problem with the file permissions.
i totally did not think in that direction (dumb).
im in a better place now.. Smile | :)

thanks a lot again

regards
~sameer

Re: Editing boot.ini programatically

Saurabh.Garg20-Jun-08 23:05

Saurabh.Garg

20-Jun-08 23:05

You are welcome.

-Saurabh

how to obtain data from other member function?

gentleguy20-Jun-08 3:02

gentleguy

20-Jun-08 3:02

dear all

i am confused how to get previous function data? for example:

void CAutoDetHumanDlg::OnSmoothImg(){imagedata=processedimage}

void CAutoDetHumanDlg::OnCalculateFeatures(){here i need processedimage data}

how can i obtain it from first function?

thanks a lot.

sorry, i am newbie

gentleguy

Re: how to obtain data from other member function?

Cedric Moonen20-Jun-08 3:07

Cedric Moonen

20-Jun-08 3:07

Make it a member of your class. This way, it will be accessible from within any of your class member function.

Cédric Moonen
Software developer

Charting control [v1.4]

Re: how to obtain data from other member function?

gentleguy20-Jun-08 3:11

gentleguy

20-Jun-08 3:11

thanks for your suggestion. now i have done the first function what i mentioned in former post, now i would like to use first function data in second function, how to get it?thanks a lot

gentleguy

Re: how to obtain data from other member function?

David Crow20-Jun-08 3:13

David Crow

20-Jun-08 3:13

If the data belongs to the CAutoDetHumanDlg class, it is accessible by any of its members. Just use it.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: how to obtain data from other member function?

gentleguy20-Jun-08 3:16

gentleguy

20-Jun-08 3:16

yes, you can see all belong to CAutoDetHumanDlg class, but how to get it? i don't know? sorry, thanks

gentleguy

Re: how to obtain data from other member function?

David Crow20-Jun-08 3:23

David Crow

20-Jun-08 3:23

gentleguy wrote:
but how to get it?

Both OnSmoothImg() and OnCalculateFeatures() access the data in the same way.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: how to obtain data from other member function?

Cedric Moonen20-Jun-08 3:16

Cedric Moonen

20-Jun-08 3:16

Do you read and try to understand the answers that are given to you ?

Cédric Moonen
Software developer

Charting control [v1.4]

Re: how to obtain data from other member function?

Nelek20-Jun-08 4:05

Nelek

20-Jun-08 4:05

This is a rethoric question, isn't it? Roll eyes | :rolleyes:

Regards.
--------
M.D.V. Wink | ;)

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson
Rating helpfull answers is nice, but saying thanks can be even nicer.

Re: how to obtain data from other member function?

CPallini20-Jun-08 3:09

CPallini

20-Jun-08 3:09

For instance making processedimage (or imagedata) member of the CAutoDetHumanDlg class.
Smile | :)

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: how to obtain data from other member function?

gentleguy20-Jun-08 3:14

gentleguy

20-Jun-08 3:14

thanks, now if i don't change anything, i have done first function already, now i am doing second function, i need first function data. so how to get it?thanks a lot

gentleguy

Re: how to obtain data from other member function?

led mike20-Jun-08 4:26

led mike

20-Jun-08 4:26

gentleguy wrote:
so how to get it?

Get a book and study it to start with. There are many but something like this[^] is a good place to start.

led mike

how to smooth projection histogram of binary image?

gentleguy20-Jun-08 2:54

gentleguy

20-Jun-08 2:54

dear all

how to smooth projection histogram of binary image? thanks a lot in advance.

gentleguy

Re: how to smooth projection histogram of binary image?

CPallini20-Jun-08 3:10

CPallini

20-Jun-08 3:10

Re: how to smooth projection histogram of binary image?

Maximilien20-Jun-08 3:14

Maximilien

20-Jun-08 3:14

What's a "projection histogram of binary image" ? google tells me it's related to "image registration" (alignment of two or more images)

but what are you wanting to smooth ?

This signature was proudly tested on animals.

Re: how to smooth projection histogram of binary image?

gentleguy20-Jun-08 3:19

gentleguy

20-Jun-08 3:19

i have read one journal paper, they said, first get projection histogram which are obtained by counting the number of black pixels on the binary image, then smoothing is performed to the histogram. so i want to know how to smooth this histogram?thanks

gentleguy

Re: how to smooth projection histogram of binary image?

CPallini20-Jun-08 3:28

CPallini

20-Jun-08 3:28

Make little steps my friend: start with a good C++ tutorial.
Smile | :)

Re: how to smooth projection histogram of binary image?

Randor 20-Jun-08 3:54

Randor

20-Jun-08 3:54

There are several smoothing/convolution algorithms that you can use to smooth the projection histogram. You can begin your research by using a gaussian smoothing filter.

http://www.codeproject.com/info/search.aspx?artkw=Gaussian[^]

http://en.wikipedia.org/wiki/Numerical_smoothing_and_differentiation[^]

The lesser known polynomial filter (Savitsky-Golay) may produce a more accurate result depending on your area of research.

http://en.wikipedia.org/wiki/Savitzky%E2%80%93Golay_smoothing_filter[^]

http://research.microsoft.com/users/jckrumm/SavGol/SavGol.htm[^]

Best Wishes,
-David Delaune

Re: how to smooth projection histogram of binary image?

Nelek20-Jun-08 4:02

Nelek

20-Jun-08 4:02

If I had voting-buttons I ~~will~~ would give you a good mark for the good links.

Regards.
--------
M.D.V. Wink | ;)

error in application

projectip20-Jun-08 1:23

projectip

20-Jun-08 1:23

I get an error "no compile tool associated with the file extension" when I delete a declaration in the header file of an appliaction.Also Im not allowed to add a new member function for a button in this case.I use vc++.

Re: error in application

Nelek20-Jun-08 1:57

Nelek

20-Jun-08 1:57

And what are you deleting? We are not mind-readers, a bit more information will help us to help you

Regards.
--------
M.D.V. Wink | ;)

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