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Cab file benjnp13-Sep-05 16:27 benjnp 13-Sep-05 16:27  I think cab file usage comes very often. Do you have any suggestions on 'what compression utility or tool to use which can be maintained inside a program'? could it be zip files or something else? Re: Cab file Christian Graus13-Sep-05 16:53 Christian Graus 13-Sep-05 16:53  Google[^] tells me there's a cab SDK. Christian Graus - Microsoft MVP - C++ Re: Cab file benjnp13-Sep-05 17:57 benjnp 13-Sep-05 17:57  I think that's the cabinet sdk from microsoft. These are the FCI and the FDI. But it's very hard to incorporate these functions in your program especially if your a beginner like me. Though I tried to incorporate these functions into my program but I ended up in an 'unexpected end of file' error after a lot of editing just for these functions to work on my program in Visual C++. I guess i'll just have to trash the idea of using cab files and try to look for other file compression format Global variable prob benjnp13-Sep-05 16:24 benjnp 13-Sep-05 16:24  How will I declare a global variable in VC++? I have created a struct on one of my class (lets say class1) after the #include.... It was included in the Global folder in the class view tab but when I'm going to access it on a different class (class2), the error is "undeclared identifier". I've tried to put the struct on the header file of class1 but a linker error occured. How will i be able made a struct be accessible by all of my classes? Thanks, I'm really stuck Re: Global variable prob Weiye Chen13-Sep-05 16:41 Weiye Chen 13-Sep-05 16:41  You can put your definition of your structure in any header file. To create a global variable for your struct, you can declare it in a source file. When you need to access this in another file, declare it again but with the extern keyword. E.g. // File1.h struct MY_STRUCT { ...}; // GlobalVariable.cpp #include "File1.h" MY_STRUCT myStruct; // AnotherFile.cpp #include "File1.h" extern MY_STRUCT myStruct; <font=arial>Weiye Chen Life is hard, yet we are made of flesh... Re: Global variable prob benjnp13-Sep-05 17:59 benjnp 13-Sep-05 17:59  I thought redeclaring the struct will reset all its values or perhaps reinitialize them. Re: Global variable prob HumanOsc13-Sep-05 23:17 HumanOsc 13-Sep-05 23:17  Hello... benjnp wrote: I thought redeclaring the struct will reset all its values or perhaps reinitialize them. No, only without the extern keyword... With the extern keyword you can declare global variables over many files without to reset them... They will be all associated to the first declaration... Re: Global variable prob Christian Graus13-Sep-05 16:50 Christian Graus 13-Sep-05 16:50  Global variables are almost always a bad idea. You're better off creating a class with a static public variable. The main reason is that you have some ability to control/track access of the variable that way. The easiest way to add a global is to declare it in your stdafx.cpp. You may need to declare it in stdafx.h, but I'm pretty sure from memory that stdafx.cpp is the place to make it visible across your app. Christian Graus - Microsoft MVP - C++ Re: Global variable prob Weiye Chen13-Sep-05 16:54 Weiye Chen 13-Sep-05 16:54  Christian Graus wrote: The easiest way to add a global is to declare it in your stdafx.cpp. You may need to declare it in stdafx.h, but I'm pretty sure from memory that stdafx.cpp is the place to make it visible across your app. Yes you are right. Create the global variable in stdafx.cpp and the extern part in stdafx.h and bingo! <font=arial>Weiye Chen Life is hard, yet we are made of flesh... Re: Global variable prob benjnp13-Sep-05 18:05 benjnp 13-Sep-05 18:05  so would it mean that I'll just have to create my struct inside a class? Re: Global variable prob Christian Graus13-Sep-05 18:06 Christian Graus 13-Sep-05 18:06  If you were going to have a global as a static property with get and set methods in a class, then yes, you'd define the struct in the same header file, before you defined the class. Or define it in the CPP and forward declare it, if you choose to store it as a pointer. If you put it in stdafx, then you define it in stdafx.h, I would have thought. Christian Graus - Microsoft MVP - C++ Re: Global variable prob benjnp13-Sep-05 18:09 benjnp 13-Sep-05 18:09  I guess i'll just have to do it in stdafx.cpp and stdafx.h., thanx Re: Global variable prob Christian Graus13-Sep-05 18:10 Christian Graus 13-Sep-05 18:10  Well, you can do it either way, but doing it in a class is definately better, and no harder. Christian Graus - Microsoft MVP - C++ Re: Global variable prob benjnp13-Sep-05 18:24 benjnp 13-Sep-05 18:24  I've placed the struct on stdafx.cpp then the extern part on stdafx.h. But 'undeclared identifier' error still occurs Re: Global variable prob benjnp13-Sep-05 18:27 benjnp 13-Sep-05 18:27  oh.. undeclared identifier is no longer the error. The error now is at the stdafx.h. I guess I've placed it in the wrong area. Where am I exactly allowed to place the externs? Sorry for the disturbance Re: Global variable prob Weiye Chen13-Sep-05 20:17 Weiye Chen 13-Sep-05 20:17  benjnp wrote: The error now is at the stdafx.h. What error? benjnp wrote: Where am I exactly allowed to place the externs? After those includes <font=arial>Weiye Chen Life is hard, yet we are made of flesh... Re: Global variable prob benjnp14-Sep-05 15:36 benjnp 14-Sep-05 15:36  k thanx Great Trouble.Please, please Help. Even a simple link... Hamed Musavi13-Sep-05 16:01 Hamed Musavi 13-Sep-05 16:01  Hi, CPians! Problem: I gonna be in charge of my local 'POLICE' to write an application which is able to recognise speech(human voice) and handwriting of my native language and local peoples. Please, Help me in: I have not any idea of the required process.(Speech recognition,image processing,... ) -Do I accept it or not?<br /> -How many days, Months, or years!! it might take?<br /> -Where can I find any links or helps on this topic? Thank you so much in advanced. Help me please. All in front of me is darkness now, I need a light of information and knowledge. Any, any help would be appreciated. Re: Great Trouble.Please, please Help. Even a simple link... Christian Graus13-Sep-05 16:17 Christian Graus 13-Sep-05 16:17  Hamed Mosavi wrote: which is able to recognise speech(human voice) and handwriting of my native language and local peoples Great.... Hamed Mosavi wrote: Do I accept it or not? I think we both know the answer. Lets review the facts: 1. You don't know how to do the job 2. Products that do this cost a lot of money ( therefore are not trivial ) 3. The police have guns. Hamed Mosavi wrote: How many days, Months, or years!! it might take? days ? LOL Hamed Mosavi wrote: Where can I find any links or helps on this topic? Google, I guess, but I sure wouldn't take this job. I've taken jobs where I had no idea how to do something, but they were SPECIFIC image processing tasks, an area I am broadly familiar with, and I'd found papers describing different approaches to the problem, so it was a calculated risk. What you're suggesting to do sounds more like madness. Christian Graus - Microsoft MVP - C++ Re: Great Trouble.Please, please Help. Even a simple link... Hamed Musavi13-Sep-05 16:43 Hamed Musavi 13-Sep-05 16:43  Thank you Mr.Christian Graus. But Some notes: -First version will need just to be able to compare two voices saying the same sentence. -Some years ago I was asked to write my first application which had to convert some data from their old format(in a DOS app.) to new data and insert them into SQL Server. I was a begginer in C++ (now think about VC++ ) but I accepted it(another maddness ) and it was all success Will this situation not tobe the same? -- modified at 22:49 Tuesday 13th September, 2005 Well! you are right. look at my first resault of a google Handwriting recognition has always been tough problem. It takes years to come to a commercially valuable result in this area - years of research, ... Why don't think about my university projects, instead Thank you very much Re: Great Trouble.Please, please Help. Even a simple link... Christian Graus13-Sep-05 16:45 Christian Graus 13-Sep-05 16:45  Hamed Mosavi wrote: Will this situation not tobe the same? No, because the other problem is well documented and commonly done. There were a lot more sources of information available to you, and it was the sort of stuff that a computer does easily, it was not a complex coding task. Amazon appears to have numerous books on speech recognition, most of which come with toolkits. They are all pretty expensive, but I'd buy a couple and read them before committing to a job like this. Christian Graus - Microsoft MVP - C++ -- modified at 22:47 Tuesday 13th September, 2005 Re: Great Trouble.Please, please Help. Even a simple link... Hamed Musavi13-Sep-05 16:58 Hamed Musavi 13-Sep-05 16:58  Thank you. I modified last message! Excuseme, I know it's stupid but, I think thhis sentence is wrong, isn't it?(Will this situation not tobe the same?) could you please tell me the true one? (I'm not english!) and Thank you very much for your kind answer lots of, lots of: Re: Great Trouble.Please, please Help. Even a simple link... Christian Graus13-Sep-05 17:00 Christian Graus 13-Sep-05 17:00  Hamed Mosavi wrote: Will this situation not tobe the same?) Wouldn't this situation be the same ? Christian Graus - Microsoft MVP - C++ Re: Great Trouble.Please, please Help. Even a simple link... Hamed Musavi13-Sep-05 17:07 Hamed Musavi 13-Sep-05 17:07  Yes! 'not' should be at the beggining. Got it! Thank you very much, indeed. Re: Great Trouble.Please, please Help. Even a simple link... charlieg13-Sep-05 17:15 charlieg 13-Sep-05 17:15  I call projects like this research projects. First, if you have never done and speech recognition, do as Christian suggested and go buy a book. Better yet (BFO attack), go see if you can buy something off the shelf and integrate it. I doubt your local police department has the resources to fund a project like this - sounds like to me they have no idea what they are even requesting. A little story... I used to work for a telephony company that had a voice activated product feature - thus, we needed some semblance of speech recognition. One of the developers working on the project was Chinese. No matter how hard she tried, she could not get the VR to respond to her accent. This is just one of the technical hurdles you will need to overcome. You might be able to do it with an existing product. Develop your own? Unlikely. chg (my opinion only). Oh, handwriting is just as difficult. One other oh - I would bid this project time and materials only. Too much risk for a fixed price. C. Gilley Will program for food... Whoever said children were cheaper by the dozen... lied.

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