Comments by stib_markc (Top 109 by date)

Damn!! I opened your link.

nice answer, provided much more information.

Yes, instanceof also works.

Please do not mock me. :)
I am just a beginner to Java as well as to programming.

Thank you, it worked.

I know there might be easier ways to do this event handling, but to maintain the code and add additional features(controls and their event handlers), I am handling all the event via a single interface. Anyway, what i want to achieve is display sine and cosine waves upon clicking the corresponding buttons. Please point me in right direction, ignore my code(if necessary), I am open to try other ways also, but I wanted to share what I have tried so far. Thank you.

please modify the link, it echoes this page only.
No, I am casting there because 'listener[i]' will be a type of EventListener, from which my GraphListener is derived, so I think there shouldn't be any problem, becase I am passing ActionListener(derived from EventListener) object to fireGraphEvent method.

Yes, the problem is I wrote the code similarly in another application and it worked, but I can't understand why this is not valid here. Of-course in that application no graph was involved, but here also before involving my GraphPanel, the exceptions arouse.

This is what the log shows:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.Class cannot be cast to GraphListener
at ControlPanel.fireGraphEvent(ControlPanel.java:74)
at ControlPanel$2.actionPerformed(ControlPanel.java:46)

Thank you once again

Thank you very much that solved starting trouble I'm having. Is it possible to disable the maximize button and resizing of the UI, because if by accidentally I do it, then the values and the graph are distorted.

First you have to understand what does the word 'virtual' means. And irrespective of the access specifier(public or private)/modifier(virtual or not), a destructor will be called when you call "delete"(for objects created on heap) or when the stack variables go out of scope. Please read polymorphism and inheritance and how they are used on constructor and destructor.

If you understand inheritance and control flow during object creation and object destruction then first solution(by SA) will answer your question.

You are welcome!

Pardon me if I am wrong but I think what he meant was, to send a message to the dialogue from a thread.

thank you

thank you very much, very useful links and information

thank you

thank you

thank you

Exactly, that is the reason, I am shifting to Qt, so that more opportunities will open up for me.

I think MFC is easier to learn and excellent documentation is provided. I am a beginner, so to start off with MFC is good, but I am trying to shift to Qt, because I see Qt being advised by many, for GUI programming. But I find MFC comfortable, may be because I have been working from the past 1 year with it.

Do you know about ODBC? Have ODBC drivers?

Thank you.

Thank you, I think my problem is solved. I will check and accept the solution in a minute or I have any problem(not sure I will), I will update. anyway thank you very much for the solution.

5!

Good List 5!

Do you want to find out the port's availability through a program?

My 5!

Excellent answer. 5!

Yes, I know about the first case, but still, I generally use PostMessage or PostThreadMessage for sending messages, which is very comfortable.

Yes, I cannot think of any other thing.

Comprehensive, my 5!

5!

Simple solution, 5!

5!

What you did is meaningless, although it works. Event handlers are there for a purpose, they are called by your application, when the specific event occurs. So, calling one event handler in another event handler? Weird!!

LoadLibrary(Explicit linking of a dll) doesn't export class from a DLL, it only exports functions. You need a ".lib"(Implicit Linking) to link it to your project, then add corresponding header file.

LoadLibrary() doesn't export class, it only used only to export functions.

Do you want to use webcam for recording/capturing video? or Do you mean you want your program to detect an available webcam?

I think OP wants to generate a setup.exe for his completed project.

Isn't better to use SPC (Serial Port Communication) for faster transfer?

Try TVN_SELCHANGE messages, as SA said. TVN(Tree View Notification)..

5! for the link.

Apt! 5!

Good question and Excellent answer

5!

5!

Very good link, my 5!

Try casting "s" with LPCTSTR; like this:
if(swscanf_s((LPCTSTR)s,....)

Pointer or any possible entity in a language or language itself is never a problem. The problem is human perception and less knowledge. If you use pointer correctly then no problem will arise and also logic will be easy to implement. So, if you want to know what possible errors are with pointers, start writing some programs and find out if any errors and then post here if you cannot understand why error is happening. For more about pointers, try googling and after some basic tutorials look up this link
Pointers Usage in C++: Beginners to Advanced[^]

5!

Then please provide, what you have tried for solving it. We may be able to point where you were wrong, and you can rectify that and proceed in the right direction.

If you are asked to write pseudo code, why so many tags? And also here assistance is provided if your facing a problem, better show what you have done or tried to do for this assignment.
Read this before posting a Question: [^]

Please show what you have tried to accomplish this task.

exactly! 5+

Did you try debugging? Display hangs for lot of reasons, which can figured out only if you check or provide some code.

correct 5+

Should use double-backslash in the file path when giving file name through code eg: L"C:\\Voice\\wave\\sample.wav"

i suggest you the best thing to do : www.google.com

Then you have a lot to work on, because this is not possible with the API or some other commands. Normally used sampling rates are between 8 kHz (telephone quality) and 48 kHz (DAT tapes). The most fundamental parameter is sampling rate which limits the highest frequency than can be stored. You can refer "Nyquist-Shannon Sampling Theorem". This becomes a whole different ball game then.
From what I have read, sample encoding limits dynamic range of recorded signal (difference between the faintest and the loudest signal that can be recorded). In theory the maximum dynamic range of signal is number_of_bits * 6 dB . This means that 8 bits sampling resolution gives dynamic range of 48 dB and 16 bit resolution gives 96 dB. So, I do not think what you want to do is possible to do using the available mmio API or MCI API.

Please debug and tell where are the errors coming.

These are the types of questions that are asked in interviews/exams(in India) for freshers(to confuse them). Unfortunately, very few use this way of declaring objects. These days the question papers are trying to confuse the student(in many ways) but not to test his basic skills and approach to a problem.

It has been difficult to search for a DirectX -SDK that contains DirectShow and that DirectX is compatible with VS6.0. I have decided to ask my manager to upgrade the VS compiler and download the Windows XP SDK, which contains DShow and compatible with the new version of VS compiler. Anyways, thanks for helping me out.

OK, just checked my folders for "Dshow.h" it is not there. So, should I need to install DirectX SDK? Now if there is no other option, I have to inform this to my manager. So, if he says no, do I have any alternative way of accomplishing this task?

No, I am currently working on VC++6.0, I do not hvae windows sdk, although i can install one after downloading. What I meant about components was "any specific api/classes/procedure or an example sample(if possible)"; also will SDK for Windows-7 work in XP/VS6.0??

Ok, if it works, what are the necessary components for the task? (I am new to COM and directshow as well. I am currently learning from tutorials provided by MSDN.)

"Examples of the types of application you can write with DirectShow include file players, TV and DVD players, video editing applications, file format converters, audio-video capture applications, encoders and decoders, digital signal processors"

DirectShow can be used for recording streams coming from an input device (say webcam, camcorder, dvds etc) but I am not sure if it works for recording internet media stream. I didn't find any articles/samples/tutorials on this topic.

lmao

5

ok, I got it. Thank you very much.

5

Also if you can tell me why can't we send the dynamically allocated memory over network connection... thank you..

I get your point. But that means I have to send the size of the buffer as well to the client. So any ideas, as how to distinguish the data received by the client? the client should know what it is receiving, right? any suggestions??

ok, Thank you, I will try parsing the buffer and get back here...

can you please provide some examples, i couldn't find any relevant examples on net(and I am new to COM)...

ok, thanks for the suggestion, i will look into some of the samples of direct show and will get back...

i mean i have to save the data into a file....whatever data that was streamed till then(when user wants to stop recording) should be saved into a file(.avi or .wmv or whatever..)

yes, that is one of the requirements..
i have to save the file..

thank you. I found some code using RTTI for audi programming, what i cannot figure out is why he used it. I will try to write my own code, instead of trying to understand complex code.

thank you. but what do you mean by "doing this effectively"? I mean we use RTTI for dynamic-casting, generally. Is RTTI that much essential / does it provide many advantages?

Thank you

thank you

actually our company still using vc++6.0...

http://www.codeproject.com/Articles/52756/A-Recording-and-Playing-Thread-Class

this also helped me a lot thank you

Ok, Thanks anyways..

thanks for the article.. will get back...

can you please explain how is it possible or how does it work actually?

Further...
#define MM_WM_DONE 0x3BD

the first case of msg is MM_WM_DONE...which is defined as
#define WOM_DONE MM_WOM_DONE in mmsystem.h so it shouldn't be a problem

5!

If people studying in B.E. or MCA can understand this code, then they do not need help. Without the knowledge of Windows SDK or MFC programming you CANNOT write the code, even your instructor knows that.
I still wonder if these people know where to start. Simply having the code in hand doesn't help, try to learn about the basics of audio programming and video programming, do some basic applications. Even MS didn't build WMP v.10 straight away.

Thank you <<_Superman_>> the problem is solved.... but why this type of casting is needed, I mean what is difference?

error C2440: 'type cast' : cannot convert from 'class CString' to 'char *' the code doent build... and yes the PlaySound function doesn't play the file fully(if it is larger than normal windows sound files). I checked it with multiple files.

That is what i actually did, please see my code...
PlaySound works only with small files. As I said I am trying to make an audio player, not trying to add (small)sounds to my program.