Conflation algorithm [modified] - C / C++ / MFC Discussion Boards

Re: how to find multiple instances of same top-level class name

FISH78618-Mar-09 3:32

18-Mar-09 3:32

Well. I might have resolved this doing the following. Not sure where I went wrong with the first one.

I created a new userapp. Without inserting any codes compiled it to make sure it works. Well it worked.

Created a DLL project in the same solution as I had before this time instead of changing and entering anything. Compiled it and set the dependencies.

After setting the dependencies it compiled not asking for any lib files.

I changed the dll code to pop up a message and ran my user app. It worked fine.

So I have a template to work with. So If any errors I get will be my own.

Thanks again for all the help.

CWinThread Question

ForNow16-Mar-09 6:20

ForNow

16-Mar-09 6:20

Hi,

I starting a worker thread using a CwinThread object

In response to User info from a Dialog Box

After the thread a has retrieved the info what is the best way to notify the app/MainFame window

Save the main window object after creating it e.g CMainFrame were is CMainFrame

is the main CFrameWnd object and do a SendMessage to that object

Or save the Main Thread from CWinapp and PostMessage to that thread

Since the thread isn't really part of Dialog Window I guess can't do a CWnd::GetaParent

to get the main Cwnd object ???

I am just a MFC rookie so... any suggestion are welcome

Re: CWinThread Question

«_Superman_»16-Mar-09 7:14

«_Superman_»

16-Mar-09 7:14

MFC has a function called AfxGetMainWnd to get the main window object.

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

Re: CWinThread Question

bulg16-Mar-09 7:33

bulg

16-Mar-09 7:33

Does this work if you call it from code in a DLL loaded by an MFC app?

Re: CWinThread Question

ForNow16-Mar-09 12:55

ForNow

16-Mar-09 12:55

I dont know if you're question is refering to _Superman_ answer However in Win32 all DLL's are mapped into the same address space

so does that mean a process an only have one main window ?????

I guess I am internals rookie too as I work as a MainFrame programmer

Re: CWinThread Question

«_Superman_»16-Mar-09 18:34

«_Superman_»

16-Mar-09 18:34

Yes, this works on a process basis.
So you can call it from the EXE itself or any of its loaded DLLs.

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

CMDIChildWnd problem

prithaa16-Mar-09 5:39

prithaa

16-Mar-09 5:39

Hello

I have created a child window with the following

CMDIChildWnd::Create(NULL, "FrameName",WS_VISIBLE | WS_CHILD |
WS_MINIMIZEBOX | WS_MAXIMIZEBOX| WS_SYSMENU |WS_VSCROLL | WS_HSCROLL , CRect(0,0,50,50), this, NULL))

the window is created but when the window is maximized the minimize,restore and close buttons are not active
How do I make them active

Prithaa

Conflation algorithm [modified]

lokesh143.surana16-Mar-09 4:12

lokesh143.surana

16-Mar-09 4:12

in this algorithm i confuse with comparison with dictionary words?

modified on Monday, March 16, 2009 10:46 AM

Re: Conflation algorithm

CPallini16-Mar-09 4:20

CPallini

16-Mar-09 4:20

lokesh143.surana wrote:
I need help to implement Conflation Algorithm....?

Are you unsure about needing help?
Big Grin | :-D

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: Conflation algorithm

Cedric Moonen16-Mar-09 4:44

Cedric Moonen

16-Mar-09 4:44

A good first step is to read the forum guidelines[^]

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Conflation algorithm

Michael Schubert16-Mar-09 4:47

Michael Schubert

16-Mar-09 4:47

lokesh143.surana wrote:
Conflation

Wow, never heard that word before, had to look it up on Wikipedia...
http://en.wikipedia.org/wiki/Conflation[^]

Need help to create DirectShow filter to read RGB 32/RGB 24 bit pixels

Andy Rama16-Mar-09 3:37

Andy Rama

16-Mar-09 3:37

Hi to all,

I am creating a DirectShow filter, that will only read the RGB pixel (32 bit) from MPEG-2 input video source.
I am connecting it after MPEG-2 Video Decoder as follows,
MPEG-2 Video Decoder --> My Custom Filter --> Video Renderer
I am receiving video size from My Custom Filter is 720x480, but actual video size if 720x576.

Code within CheckInputType(const CMediaType *mtIn) & CheckTransform(const CMediaType *mtIn, const CMediaType *mtOut) functions looks as follows,

<br />
if (IsEqualGUID(*mtIn->Type(), MEDIATYPE_Video))<br />
        if (IsEqualGUID(*mtIn->Subtype(), MEDIASUBTYPE_RGB32))<br />
		{<br />
            VIDEOINFOHEADER *pvi = (VIDEOINFOHEADER *)mtIn->Format();<br />
            return (pvi->bmiHeader.biBitCount == 32);<br />
		}<br />

Is there anything I have to change/add?
Even any solution with RGB 24 bit is also fine.

I appreciate any and all comments and suggestions.

Thanks & Regards,
Aniket A. Salunkhe

Re: Need help to create DirectShow filter to read RGB 32/RGB 24 bit pixels

Code-o-mat16-Mar-09 5:13

Code-o-mat

16-Mar-09 5:13

Hi! Did you use GraphEdit to see what inputs-outputs your filter gets?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Need help to create DirectShow filter to read RGB 32/RGB 24 bit pixels

Andy Rama16-Mar-09 22:20

Andy Rama

16-Mar-09 22:20

Hi,

First I am conecting as MPEG-2 Video Decoder --> My Custom Filter --> Video Renderer & run the graph

Input Pin Properties of My Custom Filter
Major Type : Video
Sub Type : RGB32
Format : RGB 720x480, 32 bits

Output Pin Properties of My Custom Filter
Major Type : Video
Sub Type : RGB32
Format : RGB 720x480, 32 bits
And in output I get video cropped at bottom
---------------------------
Then I am conecting as MPEG-2 Video Decoder --> Video Renderer & run the graph

Input Pin Properties of Video Renderer
Major Type : Video
Sub Type : DXVA_ModeMPEG2_A
Format : NV12 704x576, 12 bits
Aspect Ration: 4x3
Interlace format: Interleaved Bob Only
proper video output
---------------------------
After that I am conecting as MPEG-2 Video Decoder --> My Custom Filter --> Video Renderer (again) & run the graph

Input Pin Properties of My Custom Filter
Major Type : Video
Sub Type : RGB32
Format : RGB 704x576, 32 bits

Output Pin Properties of My Custom Filter
Major Type : Video
Sub Type : RGB32
Format : RGB 704x576, 32 bits
And in output I get am getting proper video

Re: Need help to create DirectShow filter to read RGB 32/RGB 24 bit pixels

Code-o-mat17-Mar-09 0:55

Code-o-mat

17-Mar-09 0:55

Hmm, strange, and it's not just the height, if you check the width it also varies between 704 and 720. Try experimenting with a different filter to see how it behaves, for example try putting a color space converter filter between the renderer and the decompressor and see what formats that gets, maybe it can help finding out something...also try logging out what formats the mpg decompressor tries to feed your filter...currently i have no exact idea what the problem could be.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Need help to create DirectShow filter to read RGB 32/RGB 24 bit pixels

Andy Rama19-Mar-09 0:51

Andy Rama

19-Mar-09 0:51

Thanks for reply.

Custom Filter with RGB24, a Color Space Converter filter gets added between custom filter & video renderer.
While with RGB32, it is directly connecting to video renderer.
I am using Elecard Video Decoder.

Code-o-mat wrote:
experimenting with a different filter to see how it behaves

I tried with different video deocders, but i m getting more issues with other deocders, like inverted video, green video, etc

How To store and retrieve images from database in VC++

savitri16-Mar-09 3:01

savitri

16-Mar-09 3:01

Hi All,

I'm savitri here. I'm doing FingerPrint project. In this project i want to store fingerprint in database and retrieve that fingerprint for comparision.I created one table called "Images" with 2 fields called ID(AutoNumber)and Image(OLE Object). While inserting fingerprint i'm writing SQL statement like this.
BYTE* buffer=new BYTE[1632];
buffer=m_RegTemplate.pbData;//m_RegTemplate is DATA_BLOB Type.
"INSERT INTO Images(Image) VALUES('"+buffer+"')";

I'm not getting how to retrieve the fingerprint from the database table. i want to save that retrieved fingerprint into m_RegTemplate.pbData for comparision.
Please tell me how to solve this problem and Give me some hints.

Thanks in Advance

Regards,
Savitri P Smile | :)

Re: How To store and retrieve images from database in VC++

Cedric Moonen16-Mar-09 3:12

Cedric Moonen

16-Mar-09 3:12

You posted your question only 1 hour ago. This is a forum, not a chat. If you can't wait, then go on rentacoder and pay somebody to do the job for you.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: How To store and retrieve images from database in VC++

Eytukan16-Mar-09 4:47

Eytukan

16-Mar-09 4:47

lol

He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus

Re: How To store and retrieve images from database in VC++

bulg16-Mar-09 7:44

bulg

16-Mar-09 7:44

what format is your image? If you're storing a bitmap file, you have to first insert the correct header information & then the raw data (i forget how many bytes the header is, but it's more than a few)
Might check out "serializable" interfaces too

Re: How To store and retrieve images from database in VC++

savitri16-Mar-09 19:54

savitri

16-Mar-09 19:54

Hi All,

It is fingerprint template. I'm using DATA_BLOB Data type to store the image from the device.I'm not getting how to retrieve the stored image from the database. When i'm trying to retrieve the image from record set.that format is recset.GetFieldValue("Image",buffer);//buffer is of CDBVariant type.I want to assign the buffer value to another BYTE* variable. But i'm not getting how to do this? So please give me any hints to solve this problem. I'm also searching the solution and trying for all the options.

Thanks in Advance.

Regards,
Savitri.

Help Buttons caption ( MessageBox ) showing "?" in Italian OS

pandit8416-Mar-09 3:00

pandit84

16-Mar-09 3:00

Hi,

I am using a message box API as :

MessageBox(NULL, bstrMessage, bstrTitle, MB_OK | MB_HELP | MB_ICONEXCLAMATION);

This work fine in english...
But in italian OS it is displaying "?" in the caption of "Help" button.

How do we change it to display a correct string in place of "?".?

Re: Help Buttons caption ( MessageBox ) showing "?" in Italian OS [modified]

Michael Schubert16-Mar-09 3:44

Michael Schubert

16-Mar-09 3:44

Odd as it may seem, for Italian Windows the translation of "Help" or "&Help" is "?" or "&?". You would have to hack the system DLLs (user32.dll actually) to change it.

modified on Monday, March 16, 2009 10:08 AM

Re: Help Buttons caption ( MessageBox ) showing "?" in Italian OS

pandit8416-Mar-09 4:26

pandit84

16-Mar-09 4:26

Could you plz give me an example ..?

Re: Help Buttons caption ( MessageBox ) showing "?" in Italian OS

Michael Schubert16-Mar-09 4:31

Michael Schubert

16-Mar-09 4:31

Example for what?

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.