C / C++ / MFC Discussion Boards

CPallini14-May-09 2:26

14-May-09 2:26

As a side note, try to pass a temporary object to the second form and see what happens to your application... Roll eyes | :rolleyes:

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]

converting pdf to any image format [modified]

Ash_VCPP13-May-09 23:56

Ash_VCPP

13-May-09 23:56

Hi All,

Can someone help me to write c++ code in the task of converting pdf to any image format(like .tif,.jpg,.bmp etc)....i googled but didnt get any useful code in c++ ....any help would be appreciable.

Thanks A Ton
Ash_VCPP
walking over water is just knowing where the stones are.....

modified on Thursday, May 14, 2009 6:29 AM

Re: converting pdf to any image format

Imran Khan Pathan14-May-09 0:20

Imran Khan Pathan

14-May-09 0:20

download pdftoimage.exe that converts PDF file to an image file.
Download from here
But it is chargeable.

regard
Imrankhan

please don't forget to vote on the post that helped you.

Re: converting pdf to any image format

Ash_VCPP14-May-09 0:32

Ash_VCPP

14-May-09 0:32

Sorry for the wrong question...actually i have to write my own application in vc++

Thanks A Ton
Ash_VCPP
walking over water is just knowing where the stones are.....

File Encryption and Encrypted text embedding in an image question.........??

young woo hur13-May-09 23:54

young woo hur

13-May-09 23:54

I am a Korean college student that is using File Encryption and Encrypted text embedding in an image in a project.

I would like to know the difference between the Online Encryption and Offline Encryption when the exe file is executed.

I think Online Encryption is to encrypt and Decryption? the actual recorded content, and offline encryption is to bring/open/call the wav file when the brouwse button is clicked and encrypt and Decryption.

later when the saving, online and offline seem to be saved with the same name.

would that suggest that the difference in the two is only the way the wav file is being opened (called on/ brought)?

File Encryption and Encrypted text embedding in an image.

I ask as there isn't much explaination to the subject of File Encryption and Encrypted text embedding in an image.

Re: File Encryption and Encrypted text embedding in an image question.........??

enhzflep14-May-09 0:19

enhzflep

14-May-09 0:19

Hi.
Can't help much RE: online/offline encryption, I wonder if offline could be like that performed by WinRar, & if online could refer to SSL & HTTPS.

As for how to go about it -
1. Read file to be hidden
2. Encrypt the file (you may like to try the wincrypt.h functions)
3. Insert this encrypted data into the image.

Here's some links that may help:
http://en.wikipedia.org/wiki/Steganography[^]
Steganography III - Change only one Bit per Pixel[^]
http://easybmp.sourceforge.net/steganography.html[^]

Reading from a txt file

V K 213-May-09 23:35

V K 2

13-May-09 23:35

Hi,
I have the only entry in the text file

[Info]
AppID=12c5cad4-3f6c-46f9-8ba7-61253cb23bec

How to retrieve "12c5cad4-3f6c-46f9-8ba7-61253cb23bec" entry

Re: Reading from a txt file

kapardhi13-May-09 23:39

kapardhi

13-May-09 23:39

You can do the following :
1. Extract the entire row and then extract text starting from '=' or
2. i do not remember the functionality of the following functions exactly but i think you can use GetPrivateProfileSectionNames () or GetPrivateProfileString ()

Re: Reading from a txt file

Fatbuddha 113-May-09 23:41

Fatbuddha 1

13-May-09 23:41

Or use a regex package.
Which language by the way.

You have the thought that modern physics just relay on assumptions, that somehow depends on a smile of a cat, which isn’t there.( Albert Einstein)

Re: Reading from a txt file

Chandrasekharan P13-May-09 23:45

Chandrasekharan P

13-May-09 23:45

This will help you

http://msdn.microsoft.com/en-us/library/4c0xfcce(VS.80).aspx[^]

Re: Reading from a txt file

Madhu Nair14-May-09 0:54

Madhu Nair

14-May-09 0:54

VKupunaram wrote:
How to retrieve "12c5cad4-3f6c-46f9-8ba7-61253cb23bec" entry

As said by kapardhi

Just try these two lines Smile | :)

TCHAR szOut[MAX_PATH];
DWORD dwReturn = ::GetPrivateProfileString(_T("Info"),_T("AppID"),_T("FAILED"),szOut,MAX_PATH,_T("C:\\yourfile.txt"))

You will get "12c5cad4-3f6c-46f9-8ba7-61253cb23bec" in szOut

Re: Reading from a txt file

V K 214-May-09 1:09

V K 2

14-May-09 1:09

thanks.. this worked

Re: Reading from a txt file

toxcct14-May-09 2:03

toxcct

14-May-09 2:03

so, you voted every answer you got as Bad because you couldn't figure how to read the documentation by yourself ?
The "said working" solution is what someone else suggested without providing code...

Dude, help yourself, and learn reading the MSDN Sleepy | :zzz:

And if you're about to vote for this post, take time at least to explain why you do so

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: Reading from a txt file

David Crow14-May-09 2:48

David Crow

14-May-09 2:48

toxcct wrote:
so, you voted every answer you got as Bad...

Are you sure it was the OP?

"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

Re: Reading from a txt file

toxcct14-May-09 2:49

toxcct

14-May-09 2:49

not that much, but at least, he could defend himself ?! lol

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Re: Reading from a txt file

Madhu Nair14-May-09 8:21

Madhu Nair

14-May-09 8:21

$Shucks | :-\$ Stopped voting ! I missed a 5 Sniff | :^)

just kidding.

How to get a JPG image from an .jp2 image ? [modified]

kapardhi13-May-09 23:17

kapardhi

13-May-09 23:17

Hai!

I am developing a dialog based application for a WINCE device in eVC++.
I cannot use GDI, ImagingFactory, IPicture API's

I need solution/suggestion to any of the following:

1. I have .jp2 image, how can i convert and save it as .jpg file.
or
2. I have the byte array of .jp2 image, how can i convert to .jpg byte array
or
3. How can i get the HBITMAP handle from .jp2 image's byte array.

I am having one more doubt:
Using picture Control i am not able to display a bitmap image
mcsMyImage - is the control variable of the Picture control of my dialog,
MyImage.bmp - is the bitmap file

now i do the following:

CString strError;
DWORD dwError;

HBITMAP hBitmap = (HBITMAP) LoadImageBitmap (NULL, _T("MyImage.bmp"), IMAGE_BITMAP, 0, 0, 0);

// Tring to get last occured error
dwError = GetLastError ();
strError.Format (_T("%x"), dwError);
AfxMessageBox (strError);

// Set the bitmap on the dialog
mcsMyImage.SetBitmap (hBitmap);

Bitmap doesnot get loaded, i get 0x6 as the last error, which says "Invalid handle" How to solve this?

Thanks!

modified on Thursday, May 14, 2009 5:25 AM

Re: How to get a JPG image from an .jp2 image ?

enhzflep14-May-09 1:00

enhzflep

14-May-09 1:00

Hi, you may be able to find an implementation of jp2 in the source code for celestia.

Haven't seen the LoadImageBitmap function before. I wonder if it works like LoadImage, if so, you'll need to throw it a copy of the hInstance, you'll also need to throw it the LR_LOADFROMFILE for the load flags.

i.e - using plain GDI:

HBITMAP hBitmap = (HBITMAP) LoadImage(
                GetModuleHandle(0),           // get hInstance of this program
                "MyImage.bmp",                // name of image to load
                IMAGE_BITMAP,                 // type of image (not a cursor or icon)
                0,0,                          // width, height - 0 = use image values
                LR_LOADFROMFILE               // this is where we want it from - ! a resource
                );

I apologise in advance if my ignorance about mfc has made this a wasted post.

Re: How to get a JPG image from an .jp2 image ?

kapardhi14-May-09 1:55

kapardhi

14-May-09 1:55

Sorry i have wrongly typed it,
it's LoadImage () only, when i am using LR_LOADFROMFILE, it gives an error error C2065: 'LR_LOADFROMFILE' : undeclared identifier

Thanks!

Re: How to get a JPG image from an .jp2 image ?

enhzflep14-May-09 2:21

enhzflep

14-May-09 2:21

Uh-huh. Okay, have you included "winuser.h" - it defines LR_LOADFROMFILE (as 0x10)
I don't need to include it explicitly using gcc 3.4.??

Taken from winuser.h

#define LR_DEFAULTCOLOR 0
#define LR_MONOCHROME 1
#define LR_COLOR 2
#define LR_COPYRETURNORG 4
#define LR_COPYDELETEORG 8
#define LR_LOADFROMFILE 16
#define LR_LOADTRANSPARENT 32
#define LR_LOADREALSIZE 128
#define LR_DEFAULTSIZE 0x0040
#define LR_VGACOLOR 0x0080
#define LR_LOADMAP3DCOLORS 4096
#define LR_CREATEDIBSECTION 8192
#define LR_COPYFROMRESOURCE 0x4000
#define LR_SHARED 32768

Remember, the first param of LoadImage can be NULL only when loading a bitmap from a resource within the module. If loading from a file, you must (a) pass the hInstance, (b) give a valid filename (c) pass the LR_LOADFROMFILE loading flag. Smile | :)

Re: How to get a JPG image from an .jp2 image ?

C^hris L^osinger14-May-09 5:10

C^hris L^osinger

14-May-09 5:10

<blockquote class="FQ"><div class="FQA">kapardhi wrote:</div>
1. I have .jp2 image, how can i convert and save it as .jpg file.</blockquote>

JasPer

image processing toolkits | batch image processing

Re: How to get a JPG image from an .jp2 image ?

Alain Rist14-May-09 6:21

Alain Rist

14-May-09 6:21

kapardhi wrote:
I am developing a dialog based application for a WINCE device in eVC++.

Chris Losinger wrote:
JasPer

Unfortunately Jasper should first be ported to WinCE Frown | :(

Seriously, if you want to get a result in reasonable time, convert your jp2 file to a Imaging supported format(as jpg or png) on a server and use the Imaging API [^]on your device.

cheers,
AR

Thread Creation Detection

naeemmuhammad13-May-09 23:15

naeemmuhammad

13-May-09 23:15

How can i detect that ThreadCreation() function has created a thread for a process on windows xp operating system?

And is there any way to read Process Control Block of the kernel?

Thanks

Re: Thread Creation Detection

Stephen Hewitt13-May-09 23:25

Stephen Hewitt

13-May-09 23:25

Your question is a bit unclear. I'm assuming you're asking how to detect thread creation from within the process that creates it. If this is the case one way is to load a DLL into the process and handle the DLL_THREAD_ATTACH notification in its DllMain[^] function.

Steve

Re: Thread Creation Detection

naeemmuhammad14-May-09 0:18

naeemmuhammad

14-May-09 0:18

sorry for not mentioning it earlier, it is from outside the software.
Actually, i want to detect the thread creation for a software (black box)running on windows xp. I want to write a software that could give me the following information for each thread in a process running on windows xp:
1. time of its creation
2. associated function (that was given in the lpStartAddress attribute of CreateThread function)

Thanks

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